REDUCING EMISSIONS FROM POWER-GENERATION: 5% Produce 75% of Contamination

Getting-down to start getting it right when it comes to broad generalities in Climate Action Plans for reducing emissions

The cost of the power sector’s emissions come from a small minority of plants

Shutting down the worst 5% would cut electricity's carbon emissions by 75%.

John Timmer - 8/11/2021, 10:23 AM

Insert copy >>  "The world seems to be simultaneously on fire and flooding, and the latest expert report indicates that we've just about run out of time to avoid even more severe climate change. All of that should have us looking for ways to cut carbon emissions as quickly and economically as possible.

Some good news in that regard came via the recent release of a paper that looks at how much each power plant contributes to global emissions. The study finds that many countries have many power plants that emit carbon dioxide at rates well above either the national or global average. Shutting down the worst 5 percent of this list would immediately wipe out about 75 percent of the carbon emissions produced by electricity generation.

CARMA revisited

It's easy to think of power generation in simple terms, like "renewables good, coal bad." To an extent, that statement is accurate. But it also compresses all power generation, from "somewhat bad" to "truly atrocious," into a single category. And it's clear from a variety of research that the situation is more complex. Depending on their vintage, many plants convert fossil fuels to power at different degrees of efficiency. And some of the least efficient plants are only brought online during periods of very high demand; the rest of the time, they're idle and produce no emissions at all.

The interactions among these factors determine whether a given power plant is a major contributor to emissions or simply part of a country's background noise of carbon output. If we had a global inventory of emissions and production from every power plant, we could use that data to identify the worst offenders and make a target list for efficiently lowering our carbon output. . ."

FOR MORE DETAILS READ https://arstechnica.com/science/2021/08/most-of-the-power-sectors-emissions-come-from-a-small-minority-of-plants/