Climate change minister Greg Barker flipped the switch to activate Europe's largest ground source heat pump at a multi-million pound London shopping centre.
The Sustainable Energy Authority of Ireland (SEAI) says significant progress has been made in renewable energy deployment in Ireland.
The Environment Agency says that there has been a six-fold increase in hydropower schemes planned in England and Wales since 2008.
A new floating visitor centre in Lancashire has been recognised by a BREEAM outstanding award for its sustainable design.
Thames Water is giving a six-week amnesty to people who have not paid for water because they weren't billed.
Research by the Carbon Trust shows that Britain's business leaders believe that the UK is falling behind Germany in taking up the green business opportunities.
A report this week warns that the world is heading for population overload which will bring rise to hunger, thirst and slum conditions if not prepared for.
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