Social venture capital investor Acumen has invested an undisclosed amount in a Pune-Boston-based Promethean Power Systems Inc., a refrigerated solutions provider.

Acumen said in a statement that it has invested in a startup from its Pioneer Energy Investment Initiative – a $20 million fund focusses on firms working in the energy sector.

Powering Agriculture Innovator Husk Power Systems' CEO Manoj Sinha grew up studying for his school exams by candlelight. More than 20 years on, his company is helping to power those same villages in India through sustainable energy created from rice husks.

Claro Energy will continue its efforts to provide affordable, reliable energy to communities in India through additional support provided by HCL Samuday's Solar Electrification Program, which aims to set up 14 solar mini-grids across 15 villages in Uttar Pradesh to supply uninterrupted power to 900 underserved rural households in the Hardoi district.