The UK has awarded contracts to build a record supply of offshore wind projects as part of its efforts to grow the country’s clean electricity sources.

But the price paid for offshore wind has increased slightly since last year, although the impact on household bills is not clear-cut.

Despite the record haul of offshore wind – which includes projects in England, Scotland and Wales – some analysts warn that the government will still struggle to meet its 2030 “clean power” target.

The government argues that wind projects are cheaper than new gas power stations and will “bring down bills for good”, but the Conservatives have previously accused climate targets of raising energy costs.

The successful projects include Berwick Bank in the North Sea, which is the largest planned offshore wind project worldwide.

In England, the Dogger Bank South wind farm off the coast of Yorkshire and the Norfolk Vanguard project off the coast of East Anglia were awarded contracts – while Awel Y Mor was the first successful Welsh project to in more than a decade.

The government wants at least 95% of Great Britain’s electricity to come from “clean” sources by 2030, partly to reduce emissions of planet-warming gases from fossil fuels. These clean sources include renewables – such as solar and wind – and nuclear energy.