By Don Gunasekera

Renewables: The sky is the limit

Nature 514, 7521 (2014). doi:10.1038/514168d

Author: Don Gunasekera

The International Energy Agency (IEA) claims in a report that up to 45% of power generated annually could come from renewable energy sources in some advanced economies without significantly increasing long-term power-system costs (The Power of Transformation; IEA, 2014). This raises the possibility