Tigo Energy, Inc. (NASDAQ:TYGO) is one of the best renewable energy penny stocks to buy.

On March 9, 2026, Tigo Energy said it entered a strategic partnership with CELTEC, a regional distributor of renewable energy products, to expand distribution of Tigo Rapid Shutdown solutions, optimizers, and other products across Central America and the Caribbean. The company said the deal is aimed at improving safety and regulatory compliance as solar adoption grows across those markets.

Tigo said the partnership will help broaden access to technologies aligned with NEC 2017 and NEC 2020 requirements, which are already mandatory in Panama and are being adopted more widely across Central American and Caribbean markets. CELTEC CEO Darío Torres said the implementation of NEC 2020 changes how solar projects are designed, especially regarding first-responder safety.

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A key product of the collaboration is Tigo’s TS4-A-2F rapid shutdown solution. The company said the product complies with module-level shutdown requirements under NEC 2017/2020 and carries IEC, UL, and UL PVRSS certifications. Tigo also said the TS4-A-2F connects to two modules and can reduce installation time while enabling up to 16% fewer connections in a 14-panel string versus single-channel MLPE systems.

Founded in 2007, Tigo Energy, Inc. (NASDAQ:TYGO) develops smart hardware and software for solar systems, including module-level power electronics, monitoring platforms, inverters, and battery storage products for residential, commercial, and utility-scale applications.

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