Mayor Ken Livingstone will expect major developments to, among other things, either install power-generating solar panels (photovoltaics) or be designed to incorporate them in the future.
The mayor said: 'A city as vast as London consumes an enormous amount of energy. We must work towards generating more of our own renewable energy. That way this great city can play a full role in meeting the national carbon dioxide target and lead on innovating future technologies.'
'Energy wastage has social implications. Fuel poverty - where households spend more than 10% of their income on adequate heating - must be eradicated. Recent figures show more than one in six London households suffer from fuel poverty. I'm making it a priority to end this situation.'
The mayor's cabinet adviser on environment, Victor Anderson, said: 'London's energy use will be transformed if we can get solar power into all major new developments. If we can do this in a city as important as London, we will have made a major contribution to tackling the problem of climate change worldwide.'
Latest estimates show that buildings are responsible for 80% of London's carbon dioxide emissions and transport for 20%. The Draft Energy Strategy ties in with the mayor's strategies on transport and spatial development for a co-ordinated approach to energy matters.
Other measures in the strategy include:
* moves to encourage the use of hydrogen as a fuel in London, including the establishment of a Hydrogen Partnership
* a shift towards cleaner fuels in public transport through new fuel technology
* setting an example by setting a target of 2005 by which time all the GLA functional body headquarters will be powered completely from renewable energy
* keeping Londoners informed through the collection, analysis and publication of information on London's energy use and carbon dioxide emissions
'Major developments' are those referable to the mayor under the Town and Country Planning (Mayor of London) Order 2000 because of their strategic importance to London.
The Draft Energy Strategy is currently out to consultation with members of the London Assembly. It is due to go out to public consultation in winter this year.
The Greater London Authority Act requires the mayor to prepare a State of the Environment Report by 2003, which will include information about energy consumption and on emissions. The Act requires the mayor to have regard to national and international targets on emissions, notably the Kyoto protocol.
The national target aims to cut carbon dioxide emission by 20% below 1990 levels by 2010.
The energy strategy is available here.