Pinpointing solar panels and knowing exactly where the sun is shining can cut carbon emissions by reducing the need to keep fossil-fueled generators on standby. Official UK figures tell us there are now over one million installations of solar photovoltaic (solar “PV”) panels. On people’s homes, on businesses, in community-owned projects. They generate energy for their owners, but they can also generate excess electricity which is deposited into the National Grid network for others to use. Fantastic. Exactly how much electricity, you might ask? No-one knows – most electricity grids were designed in the previous century when there was no need to measure “reverse flow”, meaning electricity coming back into the grid from your home. This has consequences for the climate. In the absence of exact measurement/prediction of solar energy input, fossil-powered generators need to be kept running, inefficiently, so they can take the strain when the network is underpowered.
Climate Home News 12th Feb 2020 read more »