Budget 2011

Department said largest proportional budget underspend can be attributed to unexpectedly large earnings from Nuclear Decommissioning Authority

Climate Minister reveals government continuing to investigate how to improve support for energy efficient technology

Economist urges policy makers to ignore Heartland Institute distractions and deliver investor certainty

Nicholas Stern insists GIB board is yet to finalise the remit for new institution, warning "delay is dangerous"

Environmental Audit Committee criticises Treasury's slow and incomplete response to Budget 2011 and environmental taxes report

Mayor of London urged to intervene in Treasury plans to remove a 20p duty differential on sustainable biodiesel from used cooking oil

We cover the main green announcements from Osborne's autumn statement as it happens

Scottish renewables hails success of sector, but RSPB objects to plans for Aberdeen offshore wind farm

Weakening of standards for new homes in Budget meant policy was "no longer zero carbon", campaign group says