In practice, several schemes are hybrids. There are also regulations mandating specific actions, such as labelling requirements for energy efficiency. One unusual aspect of the UK policy framework is that, since 2008, it has been underpinned by a Climate Change Act, which gave statutory force to domestic carbon-reduction budgets. The Act also set up an independent body, the Committee on Climate Change, with statutory responsibilities to propose appropriate carbon budgets, assess progress towards the statutory long-term emission reduction targets and give advice to government on climate-change policies in general, covering both mitigation of and adaptation to climate change. Originally intended to support nuclear electricity generation, the NFFO and SRO were expanded in 1990 to include renewables.