Energy company Fortum has purchased a minority stake in wave energy start-up Wello Oy for an undisclosed fee.

Cleantech company 4energy has received an investment from Chrysalix Set to accelerate its global rollout of energy saving solutions and strengthen its investor base.

The $8.1bn firm, China Minsheng Investment, is backed by 59 Chinese companies, none of which can own a stake greater than 2%.

The energy efficiency company has now raised about $57m and will seek to add climate and security control to its lighting control platform.

Siluria, which develops technology capable of generating fuel and chemicals from gas, has closed the first tranche of a series D round that could reach $50m.

Solar module maker Shunfeng Photovoloaic invested $25m in the energy storage company for what is likely to have been a 20% stake.

The Intel-backed fuel cell developer will shut down after 12 years of operations and $150m in funding after it was unable to secure additional capital.

The gas separation specialist will work with investors to advance a test model of its carbon sequestration system, which helps to collect industrial carbon dioxide.