Costs will remain high unless they are driven down by large volumes of production - which remain unlikely until prices drop. Environmentalists say market development policies must be implemented to boost green power - with a combination of public and private finance to support enough demand to reduce costs to affordable levels. Incentives must also be identified to increase the attractiveness of building and purchasing sustainable homes, such as green certificates for house builders and carbon-tax breaks for mortgage lenders. Most western countries and many major banks now offer hefty tax breaks and solar loans. Climate change is now almost universally accepted as one of the gravest problems the planet faces.
Ministers have international commitments to tackle climate change.
The Lords report made it clear that technically and financially we can take the necessary steps. Ministers must now deliver.