Fresh from raising $100m in December, Elevance has netted another $50m from undisclosed investors.

The chief executive of Chesapeake Energy details his company's plan to invest more than $1bn in corporate venturing projects designed to stimulate the demand for natural gas.

The gas provider joins about 100 investors in the natural gas technology products company.

The deal to acquire LiteOn Technology-backed Epyon Power follows ABB's purchase last year of US-based Ecotality to help it enter North America's electric vehicle charging market.

The BP and Valero-backed developer of biofuels is reportedly eyeing a rough 80% hike of the amount it has raised from venture capital firms.

Chesapeake is setting up a $1bn corporate venturing fund to deploy over 10 years to help gas more effectively compete with oil as the world's main fuel for transport. It also announced more than $300m of investment during three years in two clean tech companies.

Fidelity's Moonray Investors and Arm have backed the smart grid company, with Moonray buying out previous seed investors.

The US-based joint venture of General Electric, NRG Energy and ConocoPhillips has signed its first deal outside its home country in Israel.

The 2011 Tech Tour Cleantech Summit tests the temperature of the European ecosystem.