He didn't give away any details, but on Tuesday, Maros Sefcovic dropped some pretty major hints as to how the European Commission (EC) plans to make the EU carbon neutral by 2050.

The EC's long-awaited long-term energy strategy is expected to be unveiled on Wednesday afternoon, but in a speech at Eurelectric's Accelerating Clean Energy Investments conference in Brussels on Tuesday, the EC's vice-president for energy union spelled out a host of actions that will need to be taken.