7 Best Performing Solar Stocks to Buy Now

5. Tigo Energy Inc. (NASDAQ:TYGO)

Number of Hedge Fund Holders: 4

Year-to-Date Performance as of September 3: 43.16%

Tigo Energy Inc. (NASDAQ:TYGO) is one of the best performing solar stocks to buy now. On September 2, Tigo Energy announced that its 3-phase Tigo EI Residential solution has been certified for deployment in Slovakia. The certification was granted after the system completed compliance testing in partnership with Východoslovenská distribučná, a.s./VSD, which is a Slovak distribution system operator.

The certification confirms that the solution is compatible with local grid requirements and adheres to national standards on the quality of electricity distribution. The Tigo EI Residential 3-Phase Inverters were specifically tested and demonstrated their ability to safely disconnect from the grid during voltage loss events, which prevents unintended power from being fed back into the system.

The system’s effectiveness was demonstrated during a widespread blackout in the Czech Republic in June 2025, where it kept critical household loads running. The Slovak residential solar sector saw significant growth in 2024, accounting for ~43% of the total solar market growth. During this period, about 120 MW of rooftop solar systems were deployed across the country. Of these, more than 4 MW were equipped with Tigo MLPE/Module Level Power Electronics solutions, highlighting the growing adoption of Tigo’s technology.

Tigo Energy Inc. (NASDAQ:TYGO) provides solar and energy storage solutions worldwide. It offers module-level power electronics/MLPEs to maximize the energy output of individual solar modules for utility, commercial, and residential solar arrays.