Mayor's office unveils tough new green building rules that will force many property owners to invest in energy efficiency
All new buildings in the EU could have to comply with zero carbon standards by 2019
Wal-Mart and Whole Foods catch solar bug with plans to roll out solar panels at a large number of sites nationwide
Cow power to provide energy for beauty giant's Belgium factory
Grants for insulating homes increased and extended to cover renewable energy technologies
Spanish energy giant accelerates renewables strategy on the back of strong growth in the US and UK
Sales up 37 per cent, but customer growth slower than expected
Demand for green power continued to climb last year despite economic crisis
Large numbers of firms unaware that water use leads to increase in carbon footprint
Key players on both sides of Atlantic call for major new initiatives to accelerate the development of greener homes