The solar installation company, which has raised $210m from backers including GE, Lowe's, E.ON and Solon, will merge with listed special purpose vehicle Easterly Acquisition Corp.

Julia Rebholz has joined Corporate Impact-X (CIX), which published a report at the Global Corporate Venturing Symposium last month on practical ways for corporations to follow the Ignite fund set up by UK-based energy utility Centrica.

E.ON and other existing backers have returned to provide fresh funding to the heating installation service.

Mithril Capital Management invested $15m to take the energy storage company's Mitsui and RWE-backed series C round up to $68m.

Existing investor E.ON came back for a round that increased the energy management software developer's overall funding to more than $40m.

Caterpillar's corporate venturing unit has committed capital to the latest fund to be raised by Emerald Technology Ventures, with due diligence being carried out on other potential investors.

The energy storage and management technology provider, which counts Intel and Mitsui as investors, has secured another $8.5m.

Nanowire solar cell technology developer Sol Voltaics has raised $12.5m in an Umoe-backed series C round, together with a $4.5m grant from the Swedish government.