Argo Infrastructure Partners has provided $40m for Ice Energy, which last raised $24m in a series C round featuring TIAA in 2010.

Equinor Technology Ventures has taken part in a $20.7m round that will accelerate development of Upwing Energy's downhole gas compressor.

Existing investor Volkswagen is providing $100m for the solid-state battery developer, with which it is forming a joint venture.

Corporate venturing unit Chevron Technology Ventures has formed a $100m vehicle known as Future Energy Fund to back lower-emission technologies.

Newly formed corporate venturing unit EDP Ventures Brasil will invest at seed and series A stage on behalf of the Europe-based energy provider.

Eon-backed fuel cell technology developer Bloom Energy was rumoured to be seeking an initial public offering in 2016 and has not made any funding announcements since then.

Trust Ventures has secured $35m for its inaugural fund from investors including Koch Disruptive Technologies to invest in sectors where public policy is proving a hurdle to startups.

Energy storage and management technology provider Sonnen has formed a cooperation agreement with Shell, which led its latest round.

The investment brought the total raised by the fast-charging battery developer, which is also backed by Samsung and Daimler, to $146m.