Green fuel and biochar producer Cool Planet Energy Systems has completed a $100m series D that featured petroleum company Concord, Google Ventures, BP, Exelon and Energy Technology Ventures.

Hanwha-backed solar rooftop installer OneRoof has raised $31.5m in funding and a regulatory filing indicates NRG's solar subsidiary is the probable investor, signalling its entry into the rooftop solar sector.

The sustainable energy and fuels producer has raised $60m in a round also featuring the corporate venturing arms of Siemens and CICC.

Solar system installer SolarCity has co-led a $7m round for Off-Grid, which provides off-grid solar power to Tanzania.

The fuel cell developer, which has received funding from investors including defunct Russian oil company Yukos, has secured $63m from Singapore's sovereign wealth fund.

The China-based property and land developer will aim to bring technology developed by US firms through the incubator to the Chinese market.

Chemical company LG Chem is set to buy the US-based desalination membrane producer in a $200m deal that will provide exits for BASF and Total.

Microsoft Ventures and Espirito Santo Ventures will be joined by another corporate venturing unit, Qualcomm Ventures, and will seek to secure up to BRL 300m ($127.8m) for the fund.