A startup with ambitious plans to build large battery banks next to solar and wind farms across the world, has now run out of cash and has filed for bankruptcy. Xtreme Power, founded in 2006 and based in Kyle, Texas, is also using the bankruptcy filing as an attempt to sell the company.

According to the bankruptcy filing, Xtreme Power has just $34,000 in cash in the bank at this point, and $10 million in debts. Some of the creditors listed include Arnel Investments, Spring Ventures in San Francisco, Horizon Batteries, which holds the license for the batteries Xtreme Power used, and the Department of Energy, which gave Xtreme Power a grant from the 1603 cash grant program. The company was funded by Sail Ventures, and Bessemer Venture Partners, among other investors.

At one point a couple years ago Xtreme Power told us it had been seeking financing