Tesla is planning a major expansion of its solar division at Home Depot, embarking on a critical test of the mainstream appeal of its renewable-energy products.

The tech pioneer, best known for its electric cars, is beginning to roll out Tesla-branded selling spaces at 800 of the retailer’s locations, the company confirmed to Bloomberg News. The areas, which will be outfitted during the first half of this year, are staffed by Tesla employees and can demonstrate its solar panels and Powerwall battery.

This is incredible news for both Tesla, and Home Depot, but even more so for mainstream consumers.  As a country known for innovation it’s great to see this renewable product coming to homes near you.  And over time, we should start seeing major shifts in our energy spending and usage.

Home Depot had a previous relationship with SolarCity Corp., the company Tesla acquired in 2016 and has since retired as a brand — with salespeople in some stores trying to generate customer leads. But the products themselves weren’t on-site. Now, they will be highlighted in high-profile displays, which are 12 feet tall and 7 feet wide. Some locations will be fitted with visual demonstrations that show how the products work.

Expanding Tesla’s presence at Home Depot — one of the largest retailers in the world, with more than 2,200 stores — will be a good measure of its aspirations for solar. Several companies have tried, and failed, to make similar products financially viable. Plus, the U.S. solar market has recently contracted.

For Home Depot, Tesla’s solar panels and Powerwall battery are an opportunity to get a bigger presence from a popular brand. It’s already been a robust period for the home-improvement industry. Rising home values have spurred Americans to upgrade their properties, helping the chain avoid the malaise that has engulfed much of the broader retail industry.

The average cost of a solar panel system is $10,000 to $25,000, with an additional $7,000 for the battery, according to Tesla’s website. Tesla’s Solar Roof, which is just now hitting the market, is about $52,000 for an average home.