Homeowners could be forced to improve the energy efficiency of their properties under Government plans, it has been reported.
Proposals to be announced in a renewable energy strategy next week include new powers requiring people to reduce their carbon footprint when they renovate their homes, a newspaper has claimed.
It said one in four properties could be installed with solar heating equipment.
Other compulsory measures could include replacing oil-fired boilers.
The new onus on householders is part of £100bn package which would also see thousands new offshore wind farms built and a massive tree-planting drive.
The ideas are set out in a consultation document to be published by the Department for Business, Enterprise and Regulatory Reform in response to climate change.
The Government wants to increase the proportion of energy from renewable sources to 15% by 2020.
A spokeswoman confirmed that the Government would be announcing an expansion of renewables next week but declined to comment on details which were yet to be published.
