- The share of renewable energy that achieved lower costs than the most competitive fossil fuel doubled in 2020, a new report shows: 162GW or 62% of total renewable power generation added last year had lower costs than the cheapest new fossil fuel option https://www.irena.org/newsroom/pressreleases/2021/Jun/Majority-of-New-Renewables-Undercut-Cheapest-Fossil-Fuel-on-Cost 12 comments environment