Tesla is connecting a mega battery into an electric power grid near Houston, Texas, according to Bloomberg. It is the equivalent of plugging in more than 16,000 houses’ worth of power into the grid, according to Gizmodo.

The battery can hold 100 megawatts of power, which could possibly provide electricity for around 20,000 houses when the weather heats up during the hot spring and summer months.

An auxiliary of Tesla, known as Gambit Energy Storage LLC, has been covertly operating the project. Its exact location is in Angleton, Texas, which is about 40 miles south of Houston.

The project is promising considering the recent winter storm that wreaked havoc on the state’s power grid. That storm caused nearly 3 million households in Texas last month to lose power for several days.

“@ERCOT_ISO is not earning that R,” Musk said in a recent tweet after the storm.

Gambit’s battery has a “proposed commercial operation date” of June 1, according to an official with the Electric Reliability Council of Texas, Inc., or ERCOT, the non-profit organization that operates Texas’s electrical grid for more than 26 million Texans.

The project is using lithium iron phosphate batteries that could last 10 to 20 years, according to Ars Technica. Musk also recently relocated to Texas and is expanding his operations there.

While Tesla will not confirm the new operation, an SEC filing shows that Tesla owns Gambit. That company also shares the address of a Tesla facility near its auto plant in Fremont, Calif.