GAF Energy's Timberline Solar Energy Shingle, the world's first nail-able solar shingle, was named the best ‘Solar Shingle’ by tech website CNET in a Jan. 14 article, saying it is “a solid solar roof option.”

Timberline Solar was first introduced to the public by GAF Energy, a Standard Industries company, in 2022, and the company says it is the only system to integrate solar technology into traditional roofing processes and materials directly. Timberline Solar is assembled domestically at GAF Energy's U.S. manufacturing and R&D facility in California and manufactured in Texas

From CNET:

Timberline Solar by GAF Energy takes the top spot with its excellent warranties and efficiency ratings. GAF Energy offers three limited warranties with its solar roof: a 25-year product warranty against leaks and manufacturer defects, a 15-year wind warranty, and a 25-year power output warranty. 

The power output warranty guarantees that your solar roof's performance won't dip any lower than 98% after one year and won't decrease by any more than 0.55% per year for the next 24 years. These shingles come with the highest efficiency we've found (23%) and a solid wind rating of 130 mph. 

Timberline Solar Energy Shingle boasts a depth of less than a quarter-inch and integrates with traditional shingles to create a seamless look; it was the first product to have achieved UL's 7103 certification, meaning the product meets UL's rigorous electrical, building, and safety standards as a roofing product and a solar energy product. 

GAF Energy recently completed construction of its new 450,000-square-foot manufacturing facility in Georgetown, Texas, to meet growing demand for the Timberline Solar. GAF said the Georgetown facility will increase the company's capacity by 500% and bring the total production of its solar shingle to 300 megawatts annually.

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