ESS Tech Inc is a manufacturer of rechargeable battery and energy storage systems that are designed for both residential and commercial use. The company was founded in 2011 and is based in Wilsonville, Oregon. ESS Tech provides sustainable and cost-effective energy storage solutions to the market, particularly in locations where grid stability is a concern.
The company's patented all-iron flow battery technology, Energy Warehouse, is capable of delivering long-duration, non-degrading, and safe energy storage. It has a modular design, which allows for easy scalability, and can be installed in various applications such as renewable integration, backup power, microgrids, and peak shaving. The technology offers benefits such as lower costs, higher reliability, and a longer lifespan than traditional lithium-ion batteries.
ESS Tech has received significant investment from various sources, including venture capital firms, strategic partners, and public funding. In 2020, the company raised $30 million in a series C funding round led by Breakthrough Energy Ventures, a fund backed by Bill Gates. This brings ESS Tech's total funding to over $100 million, which is a testament to the potential of its technology.