Renewable energy is almost always cheaper

Rewind back a decade, and fossil fuels were the cheapest form of energy almost everywhere on the planet. There were just three countries where wind power was out-competing coal and gas, and solar was always more expensive.

That changed fast. Over the next five years wind power became the cheapest form of energy generation in a dozen countries, including the UK and the US. Solar prices fell low enough that it became the cheapest form of power in Australia, India, Israel and handful of sunny c...