The German government is signalling a potential delay to its coal phaseout deadline, a move that underscores the persistent fragility of European energy security and lends credence to the United Kingdom's more cautious approach. According to sources within the Federal Ministry for Economic Affairs, Berlin is weighing whether to postpone the planned 2030 closure of coal-fired power plants by up to two years, citing supply uncertainties following the loss of Russian natural gas and the slower-than-expected rollout of renewables.
This development is not a surprise to those tracking the physical realities of energy systems. Germany's Energiewende, while ambitious in its goals, has long grappled with the intermittency problem: wind and solar generated roughly 31% of the country's electricity in 2023, but their output varies wildly with weather. Without sufficient battery storage or backup capacity, baseload power must come from somewhere. Until recently, that somewhere was natural gas from Russia. Now, coal is the only dispatchable source left.
The numbers are stark. German electricity demand averages about 60 gigawatts, but renewable output can drop to under 10 GW on calm, overcast days. The difference must be met by fossil fuels. Despite adding 15 GW of solar and wind capacity last year, effective dispatchable capacity fell by 3 GW due to nuclear plant closures. The physics of power grids does not negotiate: supply and demand must balance in real time, or lights go out.
Meanwhile, in London, the UK government's energy security strategy is looking prescient. Whitehall resisted the siren call of rapid fossil fuel divestment, instead maintaining a diverse mix that includes domestic natural gas (contributing 34% of generation), nuclear (15%), and a slower but steadier expansion of renewables. The UK's decision to keep coal plants on standby through this winter, initially criticised by environmental groups, has proved a safety valve. British grid operator National Grid ESO has used coal only sparingly, but its mere presence in the system kept wholesale prices in check during the December cold snap, when renewable output in the North Sea dipped to less than 5 GW.
Critics will argue that Germany's backtracking undermines EU climate targets. However, the carbon math is more nuanced. If Germany continues to burn coal until 2032 instead of 2030, cumulative emissions would increase by roughly 80 million tonnes of CO2, about 1% of annual EU emissions. The more immediate risk is that overzealous decommissioning leads to a public backlash, as experienced during last year's debate over extending the life of nuclear plants. A pragmatic phaseout, even if delayed, maintains social license for the transition.
Technologically, the solution is not to abandon coal overnight but to accelerate the deployment of grid-scale storage and interconnectors. The UK is investing heavily in pumped hydro and battery systems, and new high-voltage links to Denmark and Norway allow importing hydro power when domestic renewables falter. Germany, landlocked and slower on storage, is now exploring lithium-ion batteries and hydrogen-ready gas turbines, but these will take years to deploy.
For investors and policymakers, the lesson is clear: energy transitions must be grounded in physical reality. The UK's insistence on maintaining a strategic reserve of coal capacity, ridiculed at COP26 as 'fossil fuel appeasement', now looks like common sense. Germany's reversal is a humbling reminder that decarbonisation is a marathon, not a sprint. The planet is warming, but so must our solutions be durable.
As I have said before, the laws of thermodynamics do not care about political timetables. The planet will continue to warm until net-zero emissions are achieved, but we cannot achieve that goal by pretending that power grids can run on intentions alone. Germany's shift may be a tactical retreat, but it is one that could ultimately secure strategic victory if it buys the time needed to build the storage and transmission infrastructure that the net-zero future demands.
