I much enjoyed Alan Sangster's future projection for the "cleaning up of wind power" and other intermittent renewable sources of energy (Letters, August 10).
While admitting that our current approach to renewable energy will save no carbon emissions in the short term, he goes on to predict that this should be corrected by 2030.
All that is needed is a continent-wide agreement to build and share a new Direct-Current Electrical Grid, and the establishment of massive energy storage – high-level lagoons, pressurised caverns, flywheel farms and battery storage barns. That way we could make intermittent renewables work, and start shutting down fossil-fuelled power stations.
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