TIGO ENERGY, INC.

Overview

Our mission is to deliver smart system solutions, combining hardware and software, which enhance safety, increase energy yield, and lower operating costs of residential, commercial, and utility-scale solar systems. We believe we are a worldwide leader in the development and delivery of products and solutions that are flexible and dependable, increasing the energy generation of solar energy systems.

We have served the solar energy industry with advanced power electronics, including the manufacturing and development of our Module Level Power Electronics (“MLPEs”), since our inception in 2007. Our primary focus has been on MLPEs, which are devices that reside under the solar panel that increase energy production, enhance safety, and lower operating costs for the system owner. Our MLPEs are designed to be highly flexible solutions that work with other inverters and modules, providing the installer with an open-system solution and a variety of choices when designing a system for the consumer.

Although the solar optimizer and inverter space has been historically served by two major suppliers, we expect to attract new customers and gain market share by expanding sales of our MLPEs, which provide solar panel power optimization and rapid shutdown, our GO Energy Storage Solutions (“GO ESS”), which provides solar energy storage management capabilities, and our Energy Intelligence (“EI”) platform which provides monitoring and energy demand forecasting capabilities. We began offering our energy consumption and demand forecasting software capabilities with the launch of Predict+, in the first quarter of 2023. Our products and services power everything from single-digit kilowatt residential systems to commercial, industrial, and utility systems, scaling to hundreds of megawatts on rooftop, ground-mounted, and floating applications.

We primarily offer our products and services through distributors and solar installers. We offer our products worldwide, which allows us to capitalize on key markets in Asia, the Americas, and Europe, the Middle East and Africa (“EMEA”). Historically our two largest geographic markets have been the EMEA and Americas regions. For the year ended December 31, 2025, we generated approximately 67.1% and 25.6% of our revenue from markets in EMEA and the Americas, respectively. For the year ended December 31, 2024, we generated approximately 60.3% and 24.3% of our revenue from markets in EMEA and the Americas, respectively.

Industry

The solar energy industry is composed of three distinct markets. The residential market represents the use of solar energy in private homes. The utilities market represents the use of solar energy deployed by companies that sell the energy to homeowners and businesses. All other activity generally falls under the broad umbrella of commercial & industrial (“C&I”). We sell our products and solutions to customers in all three markets.

For all three solar markets (Residential, C&I, and Utility), we combine our MLPE technology with our cloud-based software platform for advanced energy monitoring and control. Our MLPE products maximize performance, enable real-time energy monitoring, and provide code-required rapid shutdown at the module level. These products are certified under international standards, and the Rapid Shut Down system is certified with hundreds of inverters from more than fifteen manufacturers. This open-platform approach gives our customers significantly more freedom to right-size solar systems with the features and inverters they want.

For the residential solar and solar-plus-storage markets, we develop and manufacture MLPE devices, inverters, battery energy storage systems (“BESS”), and related energy management hardware under the Tigo GO ESS residential brand. The Tigo GO ESS residential product portfolio is designed for ease-of-installation, more efficient system maintenance and management, and increased flexibility for installers. In combination with the Tigo EI mobile app and a browser-based program, the Tigo GO ESS platform provides system diagnosis, over-the-air software upgrades, and energy production monitoring that serves both homeowners and installers.

Our Solution and Operations

Our Products

Tigo TS4 Flex MLPE/Optimizer

Our MLPEs have been our primary product since our inception in 2007 and account for the substantial majority of our revenues. Marketed as Tigo TS4 Flex MLPE, these devices are an integral part of the string-inverter type of solar architecture, performing key energy management and optimization functions directly at the solar module before the direct current energy passes to other energy conversion components. To date, we have shipped approximately 16.6 million MLPE devices worldwide and have installations in over 100 countries on all seven continents. Our TS4 Flex MLPEs were designed to provide innovative solutions that enhance safety with rapid shutdown, decrease operating costs with remote monitoring and increase energy production of photovoltaic (“PV”) systems with optimization. Our MLPEs provide customers with the opportunity to choose the functionalities applicable to their PV system, including:

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Rapid Shutdown. Our rapid shutdown MLPEs provide safety and adherence to local standards (where applicable) and safe access to PV systems on roofs by rapidly taking the system voltage to a safe level. The Tigo TS4-A-F, Tigo TS4-A-2F, and TS4-X-F rapid shutdown devices have the ability to shutdown panels with immediate effect to provide advanced first-responder safety functionality for solar modules rated up to 800W, including bifacial modules. These products feature compatibility with Pure Signal™ technology in Tigo RSS Transmitters and pair with hundreds of third-party solar inverters to deliver design and installation flexibility for solar installers and engineering, procurement and construction (“EPC”) firms.

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Rapid Shutdown and Module-Level Monitoring. The Tigo TS4-A-S combines rapid shutdown and module-level monitoring functions. Module-level monitoring can reduce operations and maintenance costs by allowing installers to pinpoint performance issues, troubleshoot remotely and eliminate manual testing of each solar panel. This combination of rapid shutdown and module-level monitoring presents a unified solution for solar modules up to 725W. This device encapsulates all the features of our TS4-A-F 25A, TS4-A-2F 25A and TS4-X-S models, offering a comprehensive device in one solution.

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Rapid Shutdown, Module-Level Monitoring and Optimization. Finally, the Tigo TS4-A-O and TS4-X-O provide the complete breadth of the solution, combining rapid shutdown, monitoring, and optimization, which combats shading and the effects of disparate aging and soiling on modules to ensure the entire system produces efficiently out of each and every module. The TS4-A-O and TS4-X-O provide monitoring capabilities down to the module-level and allows the PV system to comply with rapid shutdown directives. Specifically, these products maximize production of the solar solution, helping to overcome shade and panel efficiency mismatch. Our internal studies show that the TS4-A-O increases production by an average of 8.7% in comparison with our MLPE models without optimizers, as measured by Tigo’s “Reclaimed Energy” feature, which is included within our EI Platform and indicates the amount of energy harvested by our optimizers.

Our MLPEs are compatible with nearly every module and inverter in the market due to their open system architecture. As a result, installers use our MLPE for its ability to interface with a wide range of products. This is particularly true for installers and EPC firms that deploy large-scale C&I solar systems since components in those systems are usually custom assemblies designed to fit the precise size and cost constraints.

The majority of our MLPE products include software tools that are designed to improve the installer experience around commissioning, monitoring, and maintaining fleets of solar installations. Our software tools give our installers detailed visibility into module-level operations so that our installers can assess performance characteristics, diagnose issues, and provide high quality service to their end customers, the utility, commercial, industrial, and residential system owners.

This software is intended to simplify installations by providing installers with a single source of information for their entire fleet of installations. The software tools aggregate performance metrics of all our product offerings into one platform. The platform allows our installers to isolate specific locations and products and filter by factors such as technology and location to view fleet, site and module-specific performance characteristics. In addition, the platform allows for complete system monitoring by connecting inverters, batteries, power meters and all other equipment on site to view the entire system operation. This allows installers to obtain a complete view of all major components in an installation, review production and consumption data by hour, minute, day and month, and view real-time power flows and lifetime performance statistics.

Our software tools deliver module-level monitoring which allows users to pinpoint performance issues, the ability to troubleshoot remotely and eliminate manual testing of each solar panel resulting in an overall improvement of the user experience for installers and customers. The software platform can detect system level, string level and module-level issues and provide real-time alerts when a performance or safety issue arises. The platform also simplifies the commissioning process by providing greater system visibility and information to end installers.

Tigo GO ESS

The Tigo GO ESS product line offers a complete energy storage solution for residential customers comprised of the GO Battery, GO Inverter, GO Link/Automatic Transfer Switch (“ATS”), and GO Electric Vehicle (“EV”) Charger. The Tigo GO ESS product line provides energy resilience in the event of a grid outage and optimizes energy consumption based on rate plans for today’s home energy needs. The Tigo GO ESS product line can be configured for both whole-home and essential load backup to satisfy a comprehensive array of home energy needs. In addition, our systems are compatible with our smart app that offers 24/7 visibility of system behavior and intelligent control over system and battery management. The built-in communication hub, when paired with Tigo TS4 Flex MLPE, provides module level monitoring, optimization, and fire safety features.

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GO Battery: The Tigo GO Battery is a modular, scalable energy storage system for the battery energy storage market. In the United States (“U.S.”), our batteries are available in 5 kWh increments and are expandable up to 30 kWh. In the European Union (“EU”), our batteries include 3 kWh modules and are expandable up to 12 kWh.

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GO Inverter: The Tigo GO Inverter offers high-efficiency energy conversion for home consumption or export to the grid. Our inverter is a hybrid inverter that can accept an input from either a battery or PV array. Tigo offers 3.8 kW, 7.6 kW and 11.4 kW GO Inverter models in the U.S. market and similar models in the EU. When combined with our line of TS4 Flex MLPE products, our inverter provides module-level optimization, monitoring and rapid shutdown and enables home energy production and consumption when paired with a home energy storage system like the Tigo GO Battery.

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GO ATS: The Tigo GO ATS is a necessary component for battery backup of on-grid systems. Our ATS supports a 200-amp load to provide whole home back-up. Additional features include an optional electric-vehicle charger and generator connection. Our ATS works as a gatekeeper by sensing grid loss and safely switches from grid plus solar/battery to solar/battery only.

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GO EV Charger: Our GO EV Charger is designed to significantly reduce transportation costs. The GO EV Charger is fully compatible with both EU single- and three-phase Tigo residential solar solutions, offering a customizable charging experience. With the Tigo EI App, users can easily set their charging schedule and choose their preferred energy source, whether it is solar, grid, or a combination of both.

The Tigo GO ESS product line, available for the U.S. and European residential markets, offers flexible components that can be purchased together or individually and are compatible with other brands. For the years ended December 31, 2025, and 2024, we have generated approximately $9.6 million and $3.5 million, respectively, in revenue from offerings of our GO ESS product line.

Our GO ESS product line allows flexibility in an integrated system that is convenient to maintain through our EI mobile app and a browser-based program. The EI Platform provides system diagnosis and over-the-air software upgrades and enables energy production monitoring for greater visibility and understanding of energy systems. We provide product performance and support to homeowners and installers with industry-leading warranties on all hardware.

Our Services

Monitoring Services

Our EI software platform is provided complimentary with the majority of our MLPE product line; however, our customers can elect to purchase our premium monitoring services, which allows for increased data granularity and historical data storage, for an additional annual fee. Our monitoring services revenue represented less than 1% of the Company’s total net revenues for the years ended December 31, 2025, and 2024.

Tigo Predict+

Tigo Predict+ technology within our Tigo EI software platform marks what we believe is a significant advancement in the realm of energy demand forecasting. This innovative Software as a Service (“SaaS”) solution leverages artificial intelligence (“AI”) and machine learning technologies to offer accurate, customizable forecasting models for electricity generation and consumption. Designed to cater to the needs of utilities, independent power producers (“IPPs”), and grid planners, Tigo Predict+ provides leading analytical capabilities. Its comprehensive suite of data connectors, application programming interfaces (“API”), and post-processing models are designed to provide rapid integration, facilitating full data connectivity within hours. The platform’s in-house machine learning models and fully automated AI engines present an innovative approach to data analysis, offering insights into consumption patterns, customer group profitability, and expected behavior all from a single interface. The Company began offering the Predict+ service in January 2023. Predict+ revenue represented 1.5% and 2.2% of the Company’s total net revenue for the years ended December 31, 2025, and 2024, respectively.

Competitive Strengths

Tigo’s MLPE, GO ESS product line, and EI Platform improve the safety, energy yield, and cost of solar across all three end markets (Residential, C&I, and Utility). We believe our key competitive advantages include:

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Open Architecture. Our MLPE, GO ESS, and EI Platform are designed to work with other vendors in the industry, unlike some competitor offerings that only work within their own family of products. In particular, our MLPE architecture works with most string inverters or modules.

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Selective Optimization. The Tigo system architecture is identical to a string inverter’s architecture, allowing the optimizers to remain in a complete bypass mode until mismatch occurs that requires its intervention. It does not rely on distributed direct current (“DC”) to direct current (“DC/DC”) stage or direct current to alternating current (“DC/AC”) conversion, which allows for a decreased duty cycle among all other leading solutions in the market. Because of these guiding principles of operation, Tigo optimizers achieve maximum energy harvest with up to 99.7% efficiency and limit heat dissipation at the back of the module.

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Selective Deployment. Tigo’s selective deployment accommodates partial placement as needed and can be applied to any module in a single string, minimizing the number of optimizers needed in a tradeoff between cost and performance. Thus, any PV Module in a string that is exposed to shade, higher temperature, or has a higher mismatch characteristic with other modules can be outfitted with an optimizer. This will ensure the module’s own best performance, and equally important, that it will not limit the production of the other, unshaded PV modules in the string.

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Solar Module-Level Monitoring. Tigo provides customers with granular, solar module-level monitoring with its Energy Intelligence Platform. Module-level monitoring can identify anomalies at the module level, increase bankability and lower maintenance expenses as compared to physical monitoring.

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Storage Architecture. Tigo’s storage architecture utilizes a DC coupled system that minimizes losses from the conversion between AC and DC environments. In Tigo’s DC coupled system, DC solar electricity flows from solar panels into Tigo’s battery unit, avoiding conversions from DC to AC environments before the electricity is stored in the battery.

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Inverter Architecture. Our GO Inverter is a hybrid inverter that can accept an input from either a battery or PV array. The GO Inverter is available in multiple sizes in all regions where it is available, matching nearly all residential power requirements. They can efficiently operate with a solar panel array oversized by 200% in the event customers want to maximize their solar panel system to be able to better charge batteries.

Business Strategy

Our objective is to deliver smart hardware and software solutions to our customers in the residential, commercial, and utility-scale solar market groups. Key elements of our strategy include:

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Expand U.S. Residential Sales. We will seek to capitalize on our strong position in the U.S. C&I markets to expand our market share position in residential sales. In particular, we are looking to further grow our share of the U.S. residential market through offerings with U.S. residential solar providers.

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Expand Software Services. We will seek to increase revenues of our Predict+ Software Platform, which uses AI and machine learning technology to automatically forecast electricity generation and consumption of individual endpoints or aggregated energy portfolios for utilities, IPP’s and grid planners.

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Increase Energy Production. Our research and development team is focused on continuing to improve the performance of our MLPE solution by expanding its functionality and ensuring it is compatible with the latest PV module technology.

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Increase Market Share. The growth of the renewable energy and solar sectors is driven by three main factors: cost savings, environmental concerns and energy independence. We intend to increase market share by focusing on these factors by delivering solar offerings and solutions that enhance safety, increase energy yield and lower operating costs. To address these factors, we offer products and solutions that enhance safety, increase energy yield, and reduce operating costs, including customizable MLPE systems and our GO ESS product line for detailed module-level monitoring.

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Customer Service. Our mission is to deliver products that are productive, reliable, smart, simple and safe to enable customers’ storage and energy independence. To further enhance our customer service experience, in November 2023, the Company began the Green Glove program. Available to all solar installers, the Green Glove program is specifically designed to deliver a premium support experience that enriches the C&I installer journey from design through commissioning. The Green Glove process starts with a comprehensive design review before installation, in which the Company’s support personnel provide valuable insights and guidance. During installation, the support personnel are available on call at the Company’s regional locations to assist and address any concerns. After installation, the support team conducts thorough reviews and follow-up discussions, continually addressing outstanding questions and gathering valuable feedback to enhance the overall installation experience. We believe that the implementation of the Green Glove program, coupled with the reinforcement of the customer experience, will continue to provide us with a competitive advantage.

Our Customers

We currently offer solutions to customers globally in the residential, utility and C&I markets. We primarily rely and focus our sales efforts on distributors and installers who assist in selling our product offerings and services to customers. We do, however, make sales directly to end customers when business conditions exist where it may be advantageous for us and a customer to establish a direct commercial relationship. For the year ended December 31, 2025, no customer accounted for 10% or more of total revenue.

Sales, Marketing and Partnerships

We sell our products and services through three main channels. Primarily, we use solar equipment distributors to leverage their broad sales force, logistics and credit services with installers. We also sell our products and services directly to large installers and EPC firms when the volume is sufficient to drive economies of scale and create an on-going business relationship. In addition, we also sell to inverter suppliers, who integrate our rapid shutdown device into their inverter and then bundle this inverter with our optimizers for a more complete solution.

Our enhanced partnership program seeks to ensure compatibility between our MLPE products and a vast set of third-party inverters, supporting solar installation performance and fulfilling safety code requirements. This formalizes collaboration on technical integrations, product certification, customer support and marketing strategies with major inverter companies. Our enhanced program ensures compatibility across partner inverters and Tigo TS4 units to support solar installation performance and fulfill safety code requirements. All Tigo Enhanced inverters are integrated with Tigo RSS Transmitters and Tigo Cloud Connect Advanced to communicate with all Tigo MLPE devices.

Manufacturing and Quality Control

Manufacturing

We have designed our manufacturing processes to produce high quality products at competitive costs. Our strategy has three elements: outsource, automate, and localize. We outsource the manufacturing of our products to contract manufacturers in order to access advanced manufacturing equipment, processes, skills and capacity without large capital outlays. We also seek to increase our responsiveness to customers while reducing costs and delivery times.

A limited number of contract manufacturers account for the substantial majority of our products sold, with manufacturing currently performed across multiple facilities, including facilities located in Thailand and China; however, we maintain relationships with multiple manufacturers and have the ability to shift production among qualified facilities as needed to support continuity of supply. By utilizing more than one contract manufacturer and multiple manufacturing locations, we seek to lower our risk profile and build resilience and redundancy into our supply chain.

We entered into a master supply agreement with one of our principal contract manufacturers in February 2021, which automatically renews for successive one-year periods unless we deliver written notice of termination at least 30 days prior to the renewal date. We place purchase orders for each transaction and, although we receive forecasted pricing on a rolling twelve-month basis, specific pricing is agreed in each purchase order. We provide forecasts for our product needs and the manufacturer is required to reserve capacity for such forecasted needs. The manufacturer is required to provide six months’ prior notice of its intent to discontinue manufacturing any of our products. We expect our manufacturing relationship with this contract manufacturer to conclude in April 2026. In connection with this transition, we have engaged an additional contract manufacturer that has begun producing for us in Thailand.

We entered into a master supply agreement with another principal contract manufacturer in May 2016, which automatically renews for successive one-year periods unless either party delivers written notice of termination at least 90 days prior to the renewal date. The agreement may be terminated upon 180 days’ notice by either party. We receive price quotations that specify itemized product pricing, and such price quotations are generally reviewed every three months or as otherwise agreed.

Quality Control

Our reliability methodology includes a multilevel plan with design analysis, subsystem testing of critical components, and integrative testing of design prototypes in large sample groups. As part of our reliability efforts, we subject components to industry standard conditions and tests including in accelerated life chambers that simulate burning, thermal cycling, damp-heat, and other stresses. We also conduct out-of-box audits on our finished products. In addition, reliability tests are conducted on our optimizers, and we test fully assembled products in stress tests and in the field.

Each of our products is tested multiple times throughout the production process in order to ensure product quality prior to its shipment from the manufacturing facility. We employ a serial-number-driven manufacturing process including an auditing and traceability system that allows us to control production line activities, verify correct manufacturing processes and achieve unit-specific traceability. As a part of our quality and reliability approach, failed products from the field are returned and subjected to root cause analysis, the results of which are used to improve our product design and manufacturing processes and further reduce our field failure rate. Our rigorous testing processes have helped us to develop highly reliable products.

Industry Standards

Our products and systems comply with the applicable regulatory requirements of the jurisdictions in which they are sold, as well as with major international market standards. This includes compliance with electrical safety, electromagnetic compatibility (EMC), and Grid interconnection requirements.

In 2014, Article 690.12 of the U.S. National Electrical Code (“NEC”) mandated that all PV system circuits installed on or in buildings incorporate a rapid shutdown function to reduce electrical hazards for firefighters and emergency responders. Our TS4 products are designed with the capability to remotely shut down individual PV modules and de-energize the PV system to a safe voltage level in order to meet NEC rapid shutdown requirements.

Beginning with the 2017 edition of the NEC 690 code added in-array rapid shutdown requirements, which can be satisfied through the use of MLPEs. Our technology provides full compliance with these enhanced requirements.

Our rapid shutdown solutions are fully certified for compliance with the U.S. NEC and the Canadian Electrical Code by ANSI/CSA-accredited, nationally recognized testing laboratories. In addition, our products have been certified by globally recognized Certification Body Testing Laboratories, ensuring that our compliance test results are widely accepted in international markets beyond the United States and Canada.

Research and Development

Our research and development team has a wide range of experience in electrical, mechanical and software engineering. In addition, many members of our research and development team have expertise in solar technologies. As of December 31, 2025, our research and development organization had a headcount of 31 employees. Our research and development expenses totaled $9.2 million and $9.9 million for the years ended December 31, 2025, and 2024, respectively.

We plan to continue to devote substantial resources to research and development with the objectives of developing new products and systems, adding new features to existing products and systems and reducing unit costs of our products. Our development strategy is to identify features, products and systems for both software and hardware that reduce the cost and improve the effectiveness of our solutions for our customers. We measure the effectiveness of our research and development by metrics including product unit cost, efficiency, reliability, power output and ease of use.

Intellectual Property

The success of our business depends, in part, on our ability to maintain and protect our proprietary technologies, information, processes and know-how. We rely primarily on patent, trademark, copyright and trade secrets laws in the U.S. and similar laws in other countries, confidentiality agreements and procedures and other contractual arrangements to protect our technology. As of December 31, 2025, we had 16 granted patents and 13 pending patents. Our issued patents are scheduled to expire between 2029 and 2044. We continually assess opportunities to seek patent protection for those aspects of our technology, designs, methodologies and processes that we believe provide significant competitive advantages.

We rely on trade secret protection and confidentiality agreements to safeguard our interests with respect to proprietary know-how that is not patentable and processes for which patents are difficult to enforce. We believe that many elements of our manufacturing processes involve proprietary know-how, technology or data that are not covered by patents or patent applications, including technical processes, test equipment designs, algorithms and procedures.

We own or have rights to various trademarks and service marks in the U.S. and in other countries, including the Tigo Energy name and logo and we rely on both registration of our marks as well as common law protection where available.

We require that all of our research and development personnel and relevant subcontractors enter into confidentiality and proprietary information agreements with us. These agreements address intellectual property protection issues and require them to assign to us all of the inventions, designs and technologies they develop during the course of their work with us. We also require our customers and business partners to enter into confidentiality agreements before we disclose sensitive aspects of our technology or business plans.

From time to time, we have been, and currently are, subject to claims related to our patent rights. In addition, as part of our overall strategy to protect our intellectual property, we may take, and are currently taking, legal actions to prevent third parties from infringing upon or misappropriating our intellectual property or from otherwise gaining access to our technology. No such claims or legal actions currently involve patents or intellectual property that we consider to be material to our business.

Seasonality

Historically, the majority of our revenues have been generated from customers in the European region. The Company has experienced higher sales of our products in the second and third quarters, which has been affected by seasonal customer demand trends, including weather patterns and construction cycles. The first and fourth quarters historically have had softer customer demand in our industry due to these same factors. Although these seasonal factors are common in the solar sector, historical patterns should not be considered a reliable indicator of our future sales activity or performance.

Competition

The markets for our solar products are competitive, and we compete with manufacturers of other MLPE systems, in addition to providers of similar technologies to our GO ESS product line, including energy storage systems.

The principal areas in which we compete with other companies include:

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product and system performance and features;

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total cost of ownership;

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reliability and duration of product warranty;

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customer service and support;

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breadth of product line;

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flexibility and open compatibility across systems;

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local sales and distribution capabilities;

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compliance with applicable certifications and grid codes;

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size and financial stability of operations; and

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size of installed base.

Recent market trends show an increased focus on safety features in rooftop installations, and the emergence of standards that are evolving to address such concerns. In particular, the rapid shutdown standards in the U.S. market have led to the introduction of module-level rapid shutdown devices from our competitors. We believe that the existence of rapid shutdown capabilities built into several of our products, including our optimizers, positions us well in this regard and could serve as a competitive advantage. Additionally, in 2023, PV module manufacturers introduced larger PV modules with increased power levels above 500W. This market trend has led to market interest in higher power rating optimizers, micro inverters and other MLPE devices. Most of our products have been developed to handle up to 725W to keep pace with module manufacturers, and in 2024, we introduced our X family of MLPE which supports solar modules up to 800W. In addition, the increasing demand for storage and battery solutions is expected to increase the attachment rate of storage to PV installations in the coming years.

New entrants to the MLPE market, including low-cost Asian manufacturers, have recently announced plans to ship or have already shipped similar products. We believe our optimized inverter system offers significant technology and cost advantages, in addition to offering a competitive differentiation over traditional inverter systems and microinverter technologies. Our primary competitors in the MLPE market are Enphase and SolarEdge.

The markets for our GO ESS product line and EI Platform are also competitive, and we compete primarily with SolarEdge, Enphase, and Tesla, as well as a number of other companies.

Government Regulation and Compliance

Our business activities are global and are subject to various federal, state, local and foreign laws, rules and regulations, including complex trade and customs laws, regulations and tax requirements such as sanctions orders, duties or tariffs affecting a substantial part of our import operations. In addition, the countries in which our products are manufactured or imported may adopt laws or regulations requiring in-country manufacturing of a specified portion of our components or products. Prospective customers may also require that certain goods be manufactured or sourced in-country in order to obtain their business. In-country manufacturing requirements could have a negative impact on our results of operations as we may have limited manufacturing operations in certain countries. Changes in tax policy or trade regulations, the disallowance of tax deductions on imported merchandise, or the imposition of additional duties, new tariffs or other restrictions on imported products, could have an adverse effect on our business and results of operations.

Our operations are also subject to federal, state and local laws and regulations governing environmental protection, the occupational health and safety of our employees and labor relations, including the federal Occupational Safety and Health Act, as amended, and comparable state laws that protect and regulate employee health and safety. We are also subject to other complex foreign and U.S. laws and regulations related to anti-bribery and corruption, antitrust or competition, and data privacy and security, such as the European Union’s (“EU”) General Data Protection Regulation, among others. We have policies and procedures in place to promote compliance with these laws and regulations. Compliance with these laws, rules, regulations and any in-country manufacturing requirements has not had, and is not expected to have, a material effect on our capital expenditures and results of operations.

Import Tariffs

Changes in the U.S. trade environment, including the imposition of import tariffs and other trade restrictions, have affected, and could continue to affect, the cost and availability of certain products and components used in our products. The U.S. government has imposed tariffs on certain imports and could propose additional tariffs, increase existing tariffs, or implement other trade restrictions in the future. Due to uncertainty regarding the scope, duration, and implementation of current and potential future trade measures, we cannot predict the extent to which tariffs or other trade restrictions may impact our business, results of operations, or financial condition.

We have taken steps to manage our exposure to tariffs and trade restrictions, including adjusting our manufacturing footprint and supply chain where practicable. As of December 31, 2025, the products we import into the United States were manufactured outside of China; however, we may continue to source certain components or finished goods from countries that are, or may become, subject to tariffs or other trade restrictions. In addition, future changes in tariff rates, product scope, country-of-origin rules, or the availability of exemptions could increase our costs, disrupt our supply chain, reduce demand, or adversely affect our gross margins.

Privacy and Security Laws

There are privacy and data security laws to which we are currently subject, and/or may in the future be subject. Every U.S. state, members of the European Economic Area (“EEA”), Switzerland, United Kingdom (“UK”), Brazil, Mexico, Australia, New Zealand, China and many other jurisdictions in which we operate have adopted privacy and/or data security laws and regulations which impose significant compliance obligations.

The EU’s General Data Protection Regulation 2016/679 (“GDPR”), and the GDPR’s equivalent in the UK (“UK GDPR”), are wide-ranging in scope and apply to all organizations that process personal information. The GDPR/UK GDPR impose stringent requirements on organizations that determine the purposes and means of processing personal information (“Controllers”) and organizations that process personal information for and on behalf of Controllers (“Processors”), including for example, robust disclosure requirements to individuals regarding the categories of personal information processed, the purposes for which and manner in which that processing takes place, robust personal information security requirements, comprehensive requirements for maintaining internal compliance documentation relating to the processing of personal information, a comprehensive individual rights regime, specific timelines for reporting personal information breaches to regulators and affected individuals, limitations on retention of personal information, stringent limitations on processing special categories of personal information (such as health data), and obligations when contracting with Processors in connection with the processing of personal information. The GDPR/UK GDPR also impose strict rules on the transfer of personal information outside of the EEA/UK, and provide for the creation of supervisory authorities. If we, or any Processor engaged by us, fail to comply with the GDPR/UK GDPR, or if regulators assert we have failed to comply with these laws, it may lead to regulatory enforcement actions, which can result in monetary penalties of up to the greater of €20.0 million / £17.5 million or 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher, and other administrative penalties. Individuals also have a right to receive compensation for material or non-material damage suffered as a result of a violation of the GDPR/UK GDPR.

The GDPR/UK GDPR requirements apply not only to third-party transactions but may also apply to transfers of personal information between us and our subsidiaries, including employee personal information. The GDPR/UK GDPR have increased our responsibility and potential liability in relation to all types of personal information that we process, and we may be required to put in place additional mechanisms to ensure compliance with the GDPR/UK GDPR, which could increase our cost of doing business. However, despite our ongoing efforts to bring our practices into compliance with the GDPR/UK GDPR, we may not be successful either due to various factors within our control or other factors outside our control.

Additionally, we are governed by the California Consumer Privacy Act of 2018 as amended (“CCPA”), which also imposes certain obligations on businesses in the handling of the personal information of California residents. The CCPA establishes a privacy framework for covered businesses, including an expansive definition of personal information and data privacy rights for California residents. The CCPA provides for significant civil penalties for violating the act. Among other things, the CCPA requires covered companies to provide disclosures to California residents and ways for such residents to opt-out of certain sales of personal information. The CCPA also provides a private right of action and statutory damages for data breaches. In addition, new legislation proposed or enacted in various other states will continue to shape the data privacy environment nationally. Comprehensive data privacy laws in Colorado, Connecticut, Delaware, Florida, Indiana, Iowa, Kentucky, Maryland, Minnesota, Montana, Nebraska, New Hampshire, New Jersey, Oregon, Rhode Island, Tennessee, Texas, Virginia and Utah are in effect. These state laws impose similar obligations on businesses and grant similar rights to consumers as is provided under the CCPA. Some obligations under these state privacy statutes remain unclear, resulting in further legal uncertainty.

The data privacy legislation discussed above exemplifies the vulnerability of our business in the evolving regulatory environment related to personal information. Other states in the U.S. and the federal government have passed or are considering privacy laws, as well as regulations and amendments to the existing laws, and additional countries have in recent years implemented new privacy laws. Governments may also expand current regulation or guidance or enact new regulation or guidance related to personal information that could have an impact on our business. Our ability to develop new products or features may decrease, and our compliance costs and potential liability may increase with this scattered regulatory environment.

Government Incentives

U.S. federal, state and local government bodies, as well as non-U.S. government bodies, provide incentives to owners, distributors, system integrators and manufacturers of solar energy systems to promote solar energy in the form of rebates, tax credits, lower VAT rate and other financial incentives such as system performance payments, payments for renewable energy credits associated with renewable energy generation and exclusion of solar energy systems from property tax assessments. The market for, and customer acceptance of, on grid applications, where solar power is used to supplement a customer’s electricity purchased from the utility network or sold to a utility under tariff, is affected by the availability and size of these government subsidies and economic incentives. The disallowance or changes in government subsidies or economic incentives could have an adverse effect on our business and results of operations.

One Big Beautiful Bill Act of 2025

In July 2025, the One Big Beautiful Bill Act of 2025 (the “OBBB”) was enacted and implemented material changes to certain federal clean energy tax credit programs that are important to our business and could affect our financial condition, results of operations, and future prospects. Among other changes, the OBBB reduced the Investment Tax Credit (the “ITC”) under Section 25D of the Internal Revenue Code of 1986, as amended (the “Code”), for residential solar and storage systems purchased through cash or loans. Under the OBBB, the Section 25D credit expired on December 31, 2025.

The OBBB also established new timing requirements for eligibility under Section 48E of the Code, which governs ITCs for leased solar and storage systems. In particular, solar-only projects that do not commence construction within 12 months of the OBBB’s enactment must be placed in service by December 31, 2027, to remain eligible for the credit. Energy storage projects are not subject to this placed-in-service deadline; however, the ITC for storage systems is scheduled to begin phasing down in 2034, decreasing to 75% in 2034 and 50% in 2035, and phasing out entirely by 2036.

In addition, the OBBB amended the domestic content bonus credit requirements for Section 48E projects. Projects that commence construction after June 16, 2025, must satisfy a 45% domestic cost threshold, increased from 40%. The OBBB further introduced new compliance requirements under the Foreign Entity of Concern (“FEOC”) provisions applicable to both Section 48E and the Advanced Manufacturing Production Tax Credit (“AMPTC”) under Section 45X of the Code. These provisions require an increasing level of non-FEOC content for solar and storage projects beginning construction in 2026 and for manufactured components produced beginning in 2026.

On July 7, 2025, the President issued an Executive Order directing the Secretary of the Treasury to issue updated guidance within 45 days regarding the “beginning of construction” requirements applicable to Section 48E projects. In August 2025, the U.S. Department of the Treasury and the IRS issued revised “beginning of construction” guidance for clean energy tax credits that applies only to projects above 1MW. The Executive Order also directs the Secretary to implement the FEOC restrictions set forth in the OBBB. Under the new FEOC rules, a U.S. energy project can only receive specific tax credits if the project’s equipment from certain FEOC- related entities does not exceed set amounts, and the rules disqualify other credits from applying to US-made products that contain too many inputs from certain FEOC- related entities. The rules also prevent a company from receiving specific tax credits if it relies too much on investment or material assistance from certain FEOC- related entities, including in circumstances where a contract, license, or other arrangement gives an FEOC- related entity effective control over the company or its projects or products. Additional FEOC guidance remains forthcoming and is expected to be finalized in 2026, which could further tighten existing requirements.

These legislative and regulatory developments have affected, and could in the future adversely affect, our eligibility for certain tax credits, the attractiveness of our offerings to solar and storage system lease providers, and overall demand for our products. If we are unable to satisfy the revised domestic content or FEOC requirements, our ability to qualify for these incentives could be impaired, which could adversely affect our revenue, gross margins, business operations, and competitive position.

New Iterations of Net Metering in California

In December 2022, the California Public Utilities Commission (“CPUC”) approved and voted for the third iteration of net metering (“NEM 3.0”), which has been effective since April 15, 2023. The new policy reduces the compensation earned by solar customers selling extra energy to the grid by a substantial amount. The average export rate in California under NEM 3.0 is approximately $0.05/kWh to $0.08/kWh compared to the prior average of $0.25/kWh to $0.35/kWh under NEM 2.0. In November 2023, the CPUC also adopted changes to its Virtual NEM and NEM Aggregation programs that prohibit the netting of import energy charges at multi-meter commercial or agricultural properties with solar energy generated at or adjacent to those properties, except for residential account holders in a multi-family residential property. Both of these policy changes in California reduced demand for solar PV systems for the years ended December 31, 2025, and 2024, and may continue to do so for future inverter sales. However, the reduction in export compensation under NEM 3.0, coupled with rising utility rates, may encourage deployment of battery energy storage with solar PV systems and mitigate some of the demand reductions.

Environmental

Tigo products are designed, manufactured, stored and shipped with the goals of energy-efficiency, resource conservation, human ethics and waste management throughout their lifecycle. Our MLPE, communication devices and software are designed to optimize energy production, ensure safety, promote efficient layouts, and reduce the need for on-site monitoring.

We are a member of select solar organizations and non-profits seeking to spread the availability of distributed energy. We provide thought leadership, marketing, training and donations to the North American Board of Certified Energy Practitioners (“NABCEP”) and California Solar and Storage Association (“CALSSA”). Our online training sessions, webinars and NABCEP-accredited courses are free and digitally available worldwide on our website. We provide resources in multiple languages and seek to promote them often to spread knowledge about solar energy.

Tigo is committed to accelerating the adoption of solar energy worldwide. We do so while promoting and complying with the latest electrical certifications and requirements that enhance the safety of installers and first responders that interact with solar PV systems. Tigo is an active member of the non-profit organization CALSSA which conducts important work to enable safe, affordable access to solar energy for communities. Tigo also works closely with partner companies in the PV industry - including inverter manufacturers, module manufacturers, engineering firms, distributors and more - to ensure compliance with safety codes and measures.

Insurance

We maintain insurance, excess coverage, or reinsurance for property, general liability, international general liability, workers’ compensation, foreign voluntary workers’ compensation, umbrella, business auto, directors’ and officers’ liability and other coverage in amounts and on terms deemed adequate by management, based on our actual claims experience and expectations for future claims. However, future claims could exceed our applicable insurance coverage.

Human Capital Resources

As of December 31, 2025, we had 138 employees. Of these employees, 12 were engaged in operations, 31 in research and development, 67 in sales and marketing, and 28 in general and administrative roles. Of our employees, 73 were based in the Americas region, 48 were based in the EMEA region and 17 were based in the APAC region. We also engage independent contractors to support our activities.

None of our employees are represented by a labor union. We have not experienced any employment-related work stoppages, and we consider relations with our employees to be good.

Recruitment

We rely on the success of our recruitment efforts to attract and retain technically skilled people who can support our ongoing innovation and expansion. We are an equal opportunity employer and have a policy to not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Employee benefits

We aim to provide our employees with competitive salaries and benefits that enable them to achieve a good quality of life and plan for the future. Our benefits differ according to local norms and market preferences, but typically include all salary and social benefits required by local law (including retirement saving programs, paid vacation and sick leave) and many additional benefits that go beyond legal requirements in local markets.

Leadership, Training and Development

We aim to provide our employees with advanced professional and development skills so that they can perform effectively in their roles and build their capabilities and career prospects for the future. Our current education and training programs support and encourage educational opportunities for managers and team leaders based on personal development and advancement of our workforce as needed by the business.

Workplace safety and health

We prioritize our employees by offering comprehensive benefits and promoting health and wellness initiatives. We support a hybrid work model in certain regions and countries, where it aligns with our business requirements. Our commitment is to ensure the safety and health of our employees, and to contribute to the well-being of the communities we serve. This includes equipping our employees with the technology needed for optimal performance in remote settings. We will continue to monitor our global workplace practices and make further changes to our business operations, as necessary, to retain and expand our employee talent pool.

Available Information

We file our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports electronically with the SEC and such reports can be accessed on our Investor Relations website at www.investors.tigoenergy.com. Alternatively, you may access these reports at the SEC’s website at www.sec.gov. We make available, free of charge, copies of these reports as soon as reasonably practicable after filing these reports with the SEC or otherwise furnishing it to the SEC.

The Company may use its website as a distribution channel of material company information. Financial and other important information regarding the Company is routinely posted on and accessible through the Company’s website. Accordingly, investors should monitor this channel, in addition to following the Company’s press releases, SEC filings and public conference calls and webcasts. The contents of our website are not incorporated by reference into this Annual Report on Form 10-K or in any other report or document we file with the SEC, and any references to our website are intended to be inactive textual references only.