What will be the climate impact of a new coal mine in the UK?

By Madeleine Cuff

The UK is set to construct its first coal mine in three decades after the government approved plans for a proposed project in Cumbria, despite widespread opposition on environmental grounds.

The Woodhouse Colliery in Whitehaven will produce about 2.8 million tonnes of coking coal a year, to be used by the steel industry in the UK and beyond, according to the developer West Cumbria Mining.

But it has faced fierce opposition from scientists and environmental campaigners, who argue the UK should be investing in green steel technologies rather than supporting a new fossil fuel scheme.

Why has the government approved the mine?

The government has been under pressure from local conservative MPs to approve the mine for years, with supporters arguing it will bring around 500 much-needed jobs to the local area. But it shied away from making the decision while the UK was leading global climate talks, a role that officially ended last month.

After months of delay, Michael Gove, the secretary of state for levelling up, housing and communities,  finally granted approval for the mine on 7 December, explaining he was satisfied the project would “have an overall neutral effect on climate change” . That is despite analysis suggesting the scheme would produce an estimated 400,000 tonnes of greenhouse gas emissions a year.

Can it really be net zero emissions?

The mine developers, West Cumbria Mining, have said “the mine seeks to be net zero in its operations”, which it will achieve by minimising emissions and purchasing offsets. But it has only accounted for a tiny fraction of the entire emissions that will be generated once the coal is lifted from the ground, the Climate Change Committee’s chair Lord Deben told the BBC. “They don’t count the burning of the coal,” he said. “We have no way of ensuring that is net zero.”

Does the UK need more coking coal?

The UK produces around 7.4 million tonnes of steel every year using coking coal, mainly from two companies: British Steel and Tata. British Steel has said it will not use coal from the Cumbria project because its sulphur content will be too high, while Tata has said it may use some coal from the mine but ultimately plans to shift to greener production methods over the next decade.

In fact, it is estimated that only between 10 and 20 per cent of the coal extracted from Woodhouse Colliery will be used for steelmaking in the UK.

The rest will be exported abroad – and probably not to countries in Europe, where steelmakers are facing similar pressures to cut the carbon footprint of their operations. On the continent, steelmakers are increasingly investing in non-fossil ways of making steel, such as by using hydrogen or electric furnaces. In Sweden, for example, Hybrit is manufacturing steel made from “green” hydrogen, which is generated using renewable electricity.

Will it have a material impact on emissions?

The government argues the proposed development “will have a broadly neutral effect on the global release of greenhouse gas emissions from coal used in steel making”.  In fact, the Committee on Climate Change said the mine would increase UK carbon dioxide emissions by 400,000 tonnes a year, and once the emissions from burning the coal extracted are taken into account, 220 million tonnes of CO2 equivalent over the course of its 25-year lifetime.

It is true that this is a drop in the ocean compared to the steel industry’s overall emissions, which account for around 8 per cent of global emissions.

But even if the emissions from the mine itself are marginal, many climate experts are worried that by approving the mine, the UK government has undermined its international credibility as a climate leader.

As host of COP26 in Glasgow last year, the UK called for countries to “consign coal to history” and lobbied nations to commit to phase-out plans for the fossil fuel. Approving a new coal mine on home soil will be seen as hypocrisy, say researchers, and may embolden other nations to extend the life of their own coal industries.

“Developing countries such as India will view this decision as extremely hypocritical, and this move will do a disservice to the UK’s history of pushing out coal from its power system,” said Sugandha Srivastav at the University of Oxford in a statement.

Paul Elkins at University College London said the approval “trashes the UK’s reputation as a global leader on climate action and opens it up to well justified charges of hypocrisy – telling other countries to ditch coal while not doing so itself.”

Can the mine be stopped?

Despite winning planning approval from the government, some climate experts doubt the mine will ever become operational.

There will almost certainly be a legal challenge launched against this week’s decision, with NGOs and law firms like Client Earth actively scrutinising the decision for potential grounds for appeal, New Scientist understands.

A general election could also scupper the mine’s prospects. The Liberal Democrats and Labour are both opposed to its development, with Labour’s shadow climate and net zero secretary Ed Miliband saying the decision shows the government is “giving up on all pretence of climate leadership”. A Labour win in the next general election could stop the mine before operations ever get underway.

Sign up to our free Fix the Planet newsletter to get a dose of climate optimism delivered straight to your inbox, every Thursday

More on these topics: