Published:
Wed, May 13, 2026
Editor
BELL KA PANG/Shutterstock
A new generation of hybrid power systems combining solar photovoltaic (PV) or wind power with batteries promises to deliver reliable electricity around the clock, at costs increasingly competitive with fossil fuels. The systems are challenging assumptions around baseload power — resources that operate continuously, which typically cover nuclear, hydropower, geothermal, coal and combined-cycle gas turbines but exclude intermittent wind and solar. The main obstacles to 100% renewable generation systems are occasional episodes of very low resource availability and, more importantly, seasonal supply-demand variations, which would require large amounts of long-duration storage.
