GAF Energy, the sister company of GAF, the largest roofing and waterproofing company in North America, will build a 450,000-square-foot manufacturing facility in Georgetown, Texas, to meet growing demand for its “world’s first” nailable solar shingle, the Timberline Solar Energy Shingle, which launched in January.

The new factory, which will be GAF Energy’s second, will increase the company’s capacity by 500% and bring total production of its solar shingle to 300 megawatts annually. That will make GAF Energy the largest solar roofing producer in the world.

The Georgetown factory, which will be north of Austin and is expected to be up and running next year, will create hundreds of clean energy manufacturing jobs. GAF Energy’s first factory, in San Jose, California, was completed and began production in 2021.

Martin DeBono, president of GAF Energy, said:

We launched Timberline Solar because we believed that more consumers would choose solar if they had a more reliable, durable, and attractive option. The market has confirmed our belief – now we’re turning that belief into reality and building the future of clean energy here in the US. 

On January 6, a GAF Energy representative told Electrek about the cost, efficiency, and specs of its Timberline Solar Energy Shingle. On cost:

Timberline Solar is cost competitive with rack mounted systems and is more affordable than other solar roofs. It’s about half the cost of the Tesla Solar Roof.

The most affordable time to go solar is when you’re in the market for a new roof, by turning two home improvement projects into one. Plus, the solar helps pay for the roof by reducing your monthly utility bill.

GAF Energy president Martin DeBono says that replacing a $15,000 roof (not including solar) would probably cost $30,000 (before subsidies) with Timberline solar.

GAF Energy’s roofing partners do the pricing directly for the consumer and it depends a lot on the roof, shading, and a number of other factors.

On efficiency:

The mono passivated emitter and rear cells (PERC) we use are, on average, 22.6% efficient. That’s going to be the most reliable number if you’re looking for a number, given that our shingle technology is ahead of the curve on standardized efficiency testing (geared toward large, rigid panels).  

Based on our internal tests, GAF Energy’s custom diode layout allows for the system to outperform rack-mounted systems in real-world conditions without bulky additional electronics and the associated extra labor. Lastly, the flexible shingle form factor allows GAF Energy to fit more solar in areas where a traditional 5-by-3-foot panel simply will not fit, providing more options for customers unable to go solar before.  

A Timberline Solar Energy Shingle weighs 10.1 pounds (4.58 kg), and its dimensions are 64 1/4″ x 17 1/8″ x 1″ (1,632 x 435 x 26 mm). Allowed roof pitch is 2:12 or greater, and maximum installation altitude is 13,123 ft. (4,000 m). Average ambient temperature range is -40F to 122F (-40C to 50C).

Wind classification is ASTM D3161 Class F – that means shingles passed wind testing at 110 mph. Regarding impact resistance, shingles are rated Class 1 through 4, with Class 4 shingles having the highest resistance. The energy shingle is rated UL 2218 Class 1.

Read more: GAF Energy moves its solar manufacturing from Asia to the US


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About the Author

Michelle Lewis

Michelle Lewis is a writer and editor on Electrek and an editor on DroneDJ, 9to5Mac, and 9to5Google. She lives in White River Junction, Vermont. She has previously worked for Fast Company, the Guardian, News Deeply, Time, and others. Message Michelle on Twitter or at michelle@9to5mac.com. Check out her personal blog.