On Wednesday, Tesla opened up orders for its long-anticipated solar roof. On average, the Tesla solar roof price $21.85 per square foot, which is less than the cost of a normal roof, even without the energy savings.

The cost of a Tesla solar roof ultimately depends on how much energy you need and the percentage of active solar tiles on the roof itself. To help people determine that, Tesla also dropped a solar roof calculator with the release so people can estimate exactly the cost and how much money the roof will save them over time when they order. The solar roofs will be able to be installed in the United States this summer, and should ultimately pay for themselves, which Tesla points out makes them significantly more affordable than regular roofs. Along with that, the solar roof is stronger and lighter than a typical roof, which Elon Musk demonstrated on Instagram.

And although Elon Musk joked that he wasn’t going to make the warranty for the tiles infinity, it turns out that he changed his mind. “We offer the best warranty in the industry—the lifetime of your house, or infinity, whichever comes first,” a Tesla rep tells Inverse.

The Tesla solar roof is made of tempered glass, which makes them three times stronger than things like slate or asphalt tiles, according to Tesla. They are also half as heavy as other roofing methods. On an entire roof, the tiles will be a mix of non-active and active solar tiles. And while Consumer Reports found that a solar roof needs to be $24.50 per square foot to compete with other kinds of roofs, the Tesla solar roof comes in at $21.85 with 35 percent of the roof being active solar.

Determining the cost of a solar roof take into account how much of the roof can be active solar tile, and how much will just be the non-active glass tiles. A glass tile, without the solar elements costs $11 per square foot, and the solar tiles themselves are $42 per square foot. For most houses, Tesla says only about 40 percent of the roof will be active solar, but the percentage of active tiles depends on how much energy a household needs.

Tesla released a comparison of the different costs of roofing materials and its glass tile. 

If you want to price your own roof, you can use the Tesla Solar Calculator to determine the amount of energy a solar roof will produce over 30 years, the flat cost to purchase a roof for your house, and even adjust the cost based on your electric bill.

Of the four tile options, the grey smooth and textured black glass tiles are open to order, and the slate and tuscan style tiles will be released early in 2018. Within the United States, Tesla plans to start installing the solar roofs right away, and will start installing outside of the US in early 2018. Tesla says that installation will take about five to seven days, entirely managed by the company itself.

With all of the solar roof announcements, Musk took a moment to upload another kind of recommendation for the solar tiles. He posted a video of a hail cannonball hitting a solar tile, leaving the solar tile entirely unscathed.

Photos via Tesla (1, 2)

It’s that time of year where the pressure’s on to find super cool gifts for the people you love. Instead of scrambling around this year for last-minute gifts, why not head over to one of our favorite lifestyle product sites, Huckberry, and take a look at the Levimoon, which you’ve probably guessed by now is a levitating moon.

If you’ve been using the same furniture for 15+ years or find yourself watching “House Hunters” and wanting to redo every inch of your home, it might (hint: it is) be time for an upgrade.

Though HGTV might tell you otherwise, you don’t need to replace all of your furniture or demolish half of your place to give it a refresh. In fact, a couple of new products and fixtures can modernize any space without the cost of a total remodel.

The race is on. Waymo and Tesla are locked in a battle to reach the holy grail of full, level five autonomous driving first. Waymo, which started life as Google’s self-driving car project, has started trials of self-driving taxis in the Phoenix area. Tesla, with hundreds of thousands of electric vehicles already on the road, instead wants to upgrade existing cars with software updates to gradually enable autonomous driving for customers.

Apple’s newly announced iPad Pros are the latest in a long-standing mission to convert laptop users into tablet users. Based on the early reviews, the 2018 iPad Pro has come closer than any of Apple’s tablets so far.

To achieve this, the new iPad Pro boasts extra slender bezels, Face ID instead of the touch ID home button, a wirelessly charging Apple Pencil, and, perhaps most notably, a USB Type C charging port instead of a Lighting jack. Under the hood it’s also a force to be reckoned with, powered by Apple’s eight-core A12X Bionic processor, which the company has said is faster than 92 percent of current PC laptops and can support Xbox One S-quality graphics.