Tuesday, February 3, 2009

Avoid the peak to reduce carbon emissions

Jerry Sweeney's website, Synergy Module, shows the current pricing for electricity on the Irish Grid. The graph above shows the graph for the 3rd Feb 2009. Remarkably consistant apart from the huge spike around 6pm. This is when peaking plant is turned on to provide the extra capacity required, and this peaking plant is not as efficient as generators for base load and so is both more expensive and emits more carbon per kilowatt. So if you want to reduce your carbon emissions, try to avoid using electricity at peak times. Run that washing machine at 4 in the morning, eat later! Once we get smart meters, we will have the option for smart machines to decide when it is cheapest for them to run. Until then we have to make the decisions for them.

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