Budget's clean coal scheme
Updated on 21 April 2009
The technology is unproven, the costs of developing it enormous, but in tomorrow's budget Alistair Darling is expected to commit millions of pounds of public money to fund new carbon capture schemes.
The money is expected develop coal-fired power-stations which pump their climate-changing emissions back underground.
There are fears this could be pursued at the expense of developing other green electricity schemes and that companies behind older coal power stations might not be prepared to invest in it.