London

Dong Energy officially opens 91-turbine offshore wind farm that is expected to generate enough energy for 200,000 homes

Two separate initiatives have been announced to improve the development of electric vehicles as well as the availability of charging points

Ten areas to trial carbon saving schemes, including rooftop solar panels, electric car recharging points and new "energy doctors"

Firms that sign up to Boris Johnson's Green Procurement Code to receive advice toolkit

Washington confirms it will not reverse policy of refusing to pay for " congestion tax", despite owing more than £3.4m in unpaid fines

Industry insists it remains on track to beat zero carbon home target, as mayor of London unveils plan for new £4m fund

London Array consortium says loan application is one of a number of funding options

Plug-in hybrid Prius and all-electric Citroën offered as part of new Westminster car club

E.ON, Dong and Masdar give green light to plans after government steps up financial support for offshore wind

Mayor pledges £3m to fund 10 areas which must commit to deliver carbon reductions