Energy markets have undergone significant changes in just a few years. Gone are the days when the country relied on large power plants to supply energy to households. Just ten years ago, coal-fired power plants supplied 34% of the UK’s electricity. But this has plummeted to just 6.7% in 2017, as the government’s pledge to force unabated coal power off the UK grid by 2025 bites. Generation from renewable sources meanwhile hit 29%.