Hydrogen is an important alternative for sectors stuck in the fossil fuel economy. As national governments and European parliamentarians negotiate the EU's hydrogen strategy, EASAC issues a new commentary. "Hydrogen can help reduce our dependence on fossil fuels," says William Gillett, Director of EASAC's Energy Programme. "But the climate benefits are limited if we use fossil fuels to produce it - even with carbon capture and storage. The EU must put an end to fossil fuel subsidies. The rapidly growing demand for hydrogen must be met by a massive increase in electricity generation from renewables, together with certified imports from third countries."