Concerns are being raised over the capability of the distribution grid to handle large inputs from renewable resources, and the lack of grid-connected energy storage. Which storage technology do you think shows most promise?
Flywheel storage systems were the favourite among responders to our poll last week, with 44 per cent of the 740 respondents saying that they showed the most promise. Pumped hydroelectric storage was the second choice, on 34 per cent; these two received by far the most votes. Of the minor choices, cryogenic storage and thermal molten salts tied on 8 per cent, with redox flow batteries on 6 per cent.
We received several emails asking why hydrogen generation and storage was not included as an option; this was an oversight. Pleaselet us know if you think this would have been your favoured option.