Did wind-generated electricity displace gas-generated electricity in Ontario in June 2019?

May 26 18:05 2020 Print This Article

Financiers of green energy projects often claim in public filings that the energy generated by the projects they have financed has avoided some definite number of tons of CO2 emissions. Run the numbers, and you usually find they have assumed some annual capacity factor, say 35 percent in the case of a wind farm, and from that have estimated the megawatt-hours of electricity generated over a year. Then they assume some emission factor for the fossil generation, usually natural gas, that the wind generation is claimed to have displaced. The avoided CO2 they claim is the product of that emission factor and the amount of electrical energy their wind farm generated over the year.

So:

And

So in the case of a 1,000 MW wind farm and the (generous) 35 percent capacity factor and assuming the displaced fossil fuel is combined cycle natural gas at 400 grams per kWh:

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About Article Author

Canadian Energy Issues

Steve Aplin, author of Canadian Energy Issues, is the Vice President of Energy and Environment at the HDP Group Inc., an Ottawa-based management consultancy. He leads energy- and environment-related projects dealing with current and future energy production and use at the macro and micro levels. In addition to the technical, technological, and organizational aspects, all of these projects involve also a political dimension, which often necessitates advocacy at various levels of government as well as in the general public arena.

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