Sweden wants to become the first fossil fuel-free country in the world - how will it work?

The Prime Minister of Sweden, Stefan Löfven, has announced that his country will work towards becoming "one of the first fossil fuel-free welfare states in the world," in a speech to the UN General Assembly.
The Nordic countries already lead the world in renewable energy, with Sweden generating around two-thirds of its electricity through renewable sources.
On one unusually windy day this July, Denmark produced 140 per cent of its electricity needs through wind power alone, exporting the rest of the energy to its neighbours, Germany, Sweden and Norway (one of the biggest oil producers in the world).
And almost 100 per cent of Iceland's electricity comes from renewable sources, due to its investment in hydropower and geothermal energy production.
Read more at:http://www.independent.co.uk/environment/sweden-first-fossil-fuel-free-country-in-the-world-a6684641.html