Solar Roof

Solar Roof is a roof that makes its own electricity. Instead of bolting panels on top of an existing roof, Tesla replaces the whole roof with interlocking glass tiles that look like premium slate, and those tiles quietly turn sunlight into power for the home. Elon unveiled it in October 2016 as the home-solar centerpiece of his "Master Plan, Part Deux," and it was the reason Tesla went on to buy the solar installer SolarCity just weeks later.

What is Solar Roof?

Solar Roof builds the solar right into the roof itself instead of mounting panels on top. It uses two kinds of interlocking tempered-glass tiles. Active tiles hold the solar cells and make electricity, and they are blended with matching steel tiles that have no cells and simply cover the ridges, edges, and valleys. The finished roof looks like ordinary slate or terracotta while working like a small power plant, feeding the house and charging a Powerwall battery.

Why Solar Roof Exists

Solar Roof was the home-solar pillar of Elon's 2016 master plan. Tesla already had battery storage, and SolarCity, founded in 2006 by Elon's cousins Lyndon and Peter Rive with Elon as chairman and largest shareholder, had the solar-installation side. As Elon wrote, "Now that Tesla is ready to scale Powerwall and SolarCity is ready to provide highly differentiated solar, the time has come to bring them together." Tesla's roughly $2.6 billion all-stock purchase of SolarCity was agreed on August 1, 2016 and closed on November 21, 2016, creating one company with a single way to order, install, service, and manage everything from one app, and turning a roof from a pure cost into something that pays you back.

How it Works

Each active tile is rated near 72 watts, where a watt measures how fast the tile makes electricity. That per-tile output is the clearest edge Solar Roof has over rival solar shingles, which usually make less power each. The advantage is real but narrow, because the steel tiles that hold no cells fill so much of the roof that the whole system makes less power per square foot than regular rack-mounted panels. Where Solar Roof really earns its keep is toughness: a Class A fire rating, the highest there is, a Class F wind rating, the top class, tested to 110 mph, and a Class 4 hail rating, also the top class. The 25-year warranty promises at least 95 percent of rated power at five years, then no more than half a percent of decline a year for the next two decades. The tiles come off the line at Gigafactory New York in Buffalo, a 1.2-million-square-foot plant that New York State backed with roughly $959 million in incentives.

The Economics of Solar Roof

The price is steep. Installs commonly run $50 to $62 a square foot and $60,000 to $150,000 before incentives, and it often takes 10 to 20 years for the savings to pay that back. The numbers work best when a roof needs replacing anyway, because then the extra cost is just the solar premium rather than a whole new roof plus panels. The rollout drew complaints too, with delays that ran for months, support headaches, and a 2021 decision to raise prices on customers who had already signed, which led to a $6 million class-action settlement in 2023.

Current Status of Solar Roof

The ambition and the numbers have pulled apart. Elon once aimed for 1,000 installations a week, yet Grokipedia estimates only a few thousand U.S. installations total so far. Tesla's combined solar deployment, panels plus Solar Roof, tells the rise-and-fall story plainly.

After peaking near 348 megawatts in 2022, yearly solar deployment fell to 223 megawatts in 2023, and the slide ran straight through the year, quarter after quarter.

Starting with the fourth-quarter 2024 report, Tesla stopped reporting solar megawatts at all and listed only energy storage. That silence tells you a lot. Within the energy generation and storage business, revenue has climbed steeply, but battery storage, not solar, is doing the lifting.

Segment revenue grew from $2.789 billion in 2021 to $12.771 billion in 2025, up 27 percent year over year. Solar Roof is now a small, premium line riding inside a business that batteries carry.

What Comes Next

Tesla is drifting toward simpler, standard products. On October 23, 2025, it announced U.S. production of a new solar panel model, leaning further away from custom tiles and toward standard panels and storage. Solar Roof has not been killed off, but it has slipped to a low-volume, high-craft product rather than the mass-market roof Elon once described. Competitors using cheaper nail-on shingles, notably GAF's Timberline Solar, have taken the larger share of the solar-roofing market that Solar Roof helped create.

The Bottom Line

Solar Roof proved a roof could be both shelter and power plant, tough enough to outlast the mortgage and good-looking enough to hide what it does. It also showed that being first and being beautiful does not guarantee scale, and the megawatts that vanished from Tesla's reports are the proof. Elon got the idea right, even if the mass market went to cheaper shingles in the end.

Related

Keep reading: Supercharger Network, Tesla Solar. Zoom out to the Tesla overview, or open the Tesla Lineup Explorer.