Arguments over RCP8.5

The climate change scientific consensus is summarized via the annual IPCC documents. In one of the IPCC sections, projections of CO2 emissions from fossil fuel usage are made in the context of several scenarios, which are referred to as Representation Concentration Pathways (RCP).  Historically, the “business-as-usual” pathway was declared to be RCP8.5.

That has worked out as describing an extreme emission scenario IF society did not take corrective action in reducing emissions. In other words, RCP8.5 tracks a growth path in fossil fuels that is extrapolated from the current economic growth rate and largely dead-reckoned FF production increases.

Recently an energy analyst named Michael Liebreich challenged this assumption in the context of the possibility of greater fossil fuel depletion than is currently mapped out in the IPCC, calling the RCP8.5 estimate “bollox” in a tweet.  When challenged on this assertion, he rationalized his claim as follows:

“Here’s why I reject scare stories based on RCP 8.5 and SSP5. They assume a vast increase in coal use in the absence of more international cooperation on climate. But the reality is that it coal power is peaking already. Climate change is scary enough, we don’t need ghost stories.”

— Michael Liebreich (@MLiebreich) August 4, 2019

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EIA’s Electric Power Monthly – July 2019 Edition with data for May

A Guest Post by Islandboy

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The EIA released the latest edition of their Electric Power Monthly on July 24th, with data for May 2019. The table above shows the percentage contribution of the main fuel sources to two decimal places for the last two months and the year 2019 to date. In April, the EIA in their Short-Term Energy Outlook projected that the contribution from All Renewables would exceed that from Coal for the first time ever in April and possibly in May. While that turned out to be the case in April, in May electricity generation from coal was slightly greater than the amount generated by All Renewables and the EIA expects Coal to generate more than All Renewables each month through to April 2019. Read More

EIA’s Electric Power Monthly – June 2019 Edition with data for April

A Guest Post by Islandboy

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The EIA released the latest edition of their Electric Power Monthly on June 25th, with data for April 2019. The table above shows the percentage contribution of the main fuel sources to two decimal places for the last two months and the year 2019 to date. As was projected by the EIA in their Short-Term Energy Outlook in April (reported here), the contribution from All Renewables exceeded that from Coal for the first time ever. The EIA featured this news on their Today in Energy page on June 26th, the day after the data was published. Read More