The EU commission's 2050 low-carbon road map released last week needs to raise Europe's sights beyond its current 2020 emission reduction targets (Report, 7 March). While the EU has agreed that emissions must be reduced by at least 80% by the middle of the century, it has not so far set out how to do it. Now is the right time to discuss the most cost-effective route to achieving our 2050 goals, maximising growth, jobs and prosperity throughout Europe. We are not starting from scratch; the EU has already cut emissions by 17% from 1990 levels by 2009. The commission's road map demonstrates both that the current 20% target is not a cost-effective route to the 2050 goal, and that we already have the tools and policies to cut emissions by 25% domestically.  The European Energy Efficiency Plan is welcome and shows the big impact reducing energy consumption can have. The case to move to a 30% target by 2020 is now stronger as a result. at a time when the price of oil is soaring, putting in place an ambitious plan for Europe's low-carbon future has wider benefits than tackling climate change. It will increase the continent's resilience against oil price spikes and reduce its dependence on imported energy. and it will help Europe compete with emerging economies in the fast-growing markets for green goods and services. We call on all member states to enter into this urgent debate on Europe's future and agree how the road map is put into action.  Chris Huhne Secretary of state for energy and climate change, UK, Tina Birbili Minister of environment, Greece, andreas Carlgren Minister for the environment, Sweden and four others,  See gu.com/letters for full list