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Renewable energy — solar, wind, hydroelectric, geothermal, and tidal power — has experienced an extraordinary cost revolution. Solar panel costs fell 99% between 1976 and 2019, from $76/watt to $0.38/watt. Wind power costs fell 70% from 2010 to 2020. Renewables are now the cheapest form of new electricity generation in most of the world — cheaper than coal or gas.
Global renewable electricity capacity additions exceeded fossil fuel additions for the first time in 2014; in 2023, renewables provided 30% of global electricity. Denmark generates 88% of its electricity from wind; Iceland, 100% from renewables. China installs more solar panels every year than the entire world installed in the previous 40 years combined. The primary challenge: storage (batteries) and grid integration.
# Top 10 renewable energy facts
- 1Solar costs fell 99%
- 2Denmark 88% wind electricity
- 3Iceland 100% renewable
- 4China's solar installation rate
- 5grid-scale batteries
- 6offshore wind potential
- 7tidal energy
- 8geothermal
- 9green hydrogen
- 10the energy transition creates 30 million jobs by 2030
Fascinating Facts
- ◆Solar panel costs fell 99% in 40 years — the fastest cost decline of any energy technology in history
- ◆Denmark generated 88% of its electricity from wind in 2023 — more than its total electricity demand on windy days
- ◆The world installed more solar capacity in 2023 alone than in all previous years combined
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