The new report by Oxfam claims that even if governments meet their climate and energy commitments for 2020, Europe's annual energy imports bill will soar from £325 billion to more than £400 billion by 2030 because of rising prices.
At the same time the EU's food import bill could rise as climate change hits countries where much of the bloc's food is produced, the report said, leaving Europe's poor struggling to pay for both heating and food.
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The former prime minister made the comments as he prepares to return to politics saying he wants to be "part of the debate" on Brexit.
The new measures would mirror childcare vouchers and see workers sacrifice some of their salary to benefit.
Google, Facebook and Twitter could face multi-million pound fines over their failure to remove illegal content, MPs say.