Investment

Two-stroke engine, half the emissions

Trillant raises $106m from venture funds and industry heavyweights

Better, greener, more competitive Europe

Business group voices concerns over government plans for new per-plane duty

Department braces itself for deep cuts

All the cuts detailed as DECC attempts to save £34m from low carbon technology budgets

Geothermal, offshore wind and Carbon Trust among the big losers as axe falls, but sources insist Wave Hub project is safe

New capacity in Europe and US exceeds new fossil fuel and nuclear capacity during 2009

Report claims government will not use asset sales to help fund formation of Green Investment Bank

Engineering giant obtains first carbon credits through new wind farm development