Energy secretary Huhne resigns, replaced by Ed Davey

Energy and climate secretary steps down and faces charge of perverting the course of justice

South-west given ‘marine energy park’ status

A partnership has been formed to promote wave and tidal projects in the region, but it has not received any new finance

All buildings could be zero-carbon by 2050

An environmental research unit has outlined a plan to stop all Britain's buildings emitting greenhouse gas by mid-century

DECC loses appeal against High Court solar ruling

The energy department is looking to appeal again, but solar companies still expect a rush to install panels before March

Utility to create power from drinking water

Scottish Water plans to install turbines in its large supply pipes to generate electricity.

DECC tries new route to implement solar cuts

Cuts to solar subsidies will affect projects developed from 3 March, if the government loses its appeal against a judicial review

Plug-in car grant extended to vans

New electric vans can now qualify for a government subsidy, while the existing grant scheme for electric cars has been secured until 2015. Meanwhile, BIS has launched a project to advance hydrogen fuel cell technology

Another offshore wind turbine manufacturing site set for Humberside

A planning application for a new port and 11 wind turbine manufacturing plants has been submitted. Areas of the Humber estuary would need to be reclaimed

Ministry of Defence drops wind objections

A wind-friendly radar system proven in Norfolk is being rolled-out elsewhere across England

Grid charges for wind farms to plummet

Ofgem wants grid charges to reflect the way wind farms operate but has rejected calls for uniform charges across the UK

BT makes the carbon reduction connection

James Richens reports on how BT is cutting energy use while demand for digital services continues to rise.

Court judgment on solar cuts threatens feed-in tariff regime

The High Court has ruled that plans to cut subsidies for solar photovoltaic projects are illegal. The government is appealing the decision and it now has a Plan B

Huge rise in ‘shut-down’ payments to onshore wind farm operators

The owners of onshore wind farms were paid to stop generating nearly 150,000 megawatt hours last year by National Grid

Cuts to Renewables Obligation need rethinking, say trade bodies

Wind, biomass and energy-from-waste projects will be endangered by plans to revise renewables subsidies, trade bodies have warned the government.

Keep biomass for specialist uses, says CCC

The Committee on Climate Change's vision for bioenergy up to 2050 imply significant changes to EU and UK policy

Quick links to key documents and reports

• 3 February 2012

  Friends of the Earth Europe report on EU-wide extrapolation of UK costs of biofuels calculations

• 3 February 2012

  UNECE joint wood energy enquiry

• 1 February 2012

  ASA adjudication on misleading solar PV ad from Ice Energy Heat Pumps Ltd

• 31 January 2012

  House of Commons library research paper: Wind farms - distance from housing