The batteries will store more than 100MWh of energy at SunEdison’s rural electrification and solar-powered minigrid projects in India.

SunEdison is planning to bring reliable energy to 20 million people globally by 2020.

SunEdison president and chief executive officer Ahmad Chatila said: "Energy storage is the perfect complement to solar powered minigrids because it enables us to provide dependable, 24/7 electricity.

"And Imergy’s technology is a great fit for rural electrification because their systems are high performance, low cost, ultra-durable and need very little maintenance."

Imergy Power Systems chief executive officer Bill Watkins said: "Imergy’s storage systems are safe and sustainable, and provide the lowest cost and most reliable way to store energy for these minigrids."

SunEdison said it will also increase its equity investment in Imergy as both the firms seek to strengthen their working relationship.

The rural electrification program in India has started, and Imergy expects to start shipping its batteries shortly.

Imergy’s energy storage solutions will reduce energy costs and stabilize the grid. The company’s Energy Storage Platform (ESP) provides optimizes renewable energy generation and improves power reliability.