Monday, July 31, 2017

Governor Brown, Think Nuclear Power!

California’s governor, Jerry Brown, has been a strong advocate for measures to limit greenhouse gas (ghg) emissions and combat climate change. He demonstrated leadership in face of the US withdrawal from the Paris Agreement by President Trump by speaking out and letting the world know that many cities and states in the US will still abide by those pledges. He led a delegation with major industry leaders to China to explore co-operative ventures. Just this week, on July 25, he signed a major climate bill, AB 398, which will extend California’s cap-and-trade system for ghg to 2030. Gov. Brown never misses an opportunity to remind us that implementing measures to combat climate change has not hurt California’s economy, instead it has made it stronger and resilient.

Thus far, switching from coal to natural gas has been the main contributor towards reduced emissions in CA. However, this model is not a recipe for curbing emissions in energy-impoverished societies where most of the growth in energy consumption is expected. Because they are not profligate consumers of energy, there is very little room for gain by increasing efficiency. As they strive to improve their standard of living they will need to sharply increase the total supply of energy. And remember, emissions do not know state or national boundaries, and California is responsible for barely 1% of global ghg emissions. What California needs to do is develop innovative technologies that avoid carbon emissions at a cost that makes a compelling case for their widespread adoption.

There is a growing global and national need for carbon-free electricity. Even in CA, electricity demand is expected to increase. Additional electricity required to power the projected 1.5 million EVs is 12.6 TWh per year. California’s IT industry also requires large amounts of electricity. Cloud services by Amazon, Google, Microsoft, and others require 10s of TWh of reliable electricity each year. To put these numbers in perspective, CA consumed 220 TWh of electricity in 2014. Bulk of this electricity (120 TWh) used in CA was generated from natural gas. Coal contributed only about 20 TWh; it was mostly imported from other states as the in-state production of coal power has all but disappeared. Wind, solar, geo thermal, and hydroelectric power generate relatively smaller amounts: 13, 10, 12 and 17 TWh respectively.

Nuclear power is one technology that can produce copious quantities of carbon-free electricity. California used to have three nuclear power plant facilities generating about 44 TWh carbon-free electricity; however, two of them have already been closed and there are talks of decommissioning the third one at Diablo Canyon, which last year generated 17 TWh of electricity. In view of the increasing demand for carbon-free electricity, I find plans to turn off nuclear plants misguided. Germany’s attempt to cut greenhouse gas emissions have essentially stalled after it turned off its nuclear power plants.

Existing plants should be re-certified and the development of new inherently safe nuclear power technologies needs to be supported. I am heartened to see construction of the such plants in China and India. It would be nice if such development also took place in the U.S., but that is not likely given the strong anti-nuclear sentiment. This attitude feeds into the “business risk” and renders financing nuclear projects impossible. We must remember that nuclear power has the smallest environmental footprint and is the safest source of energy with the least number of casualties per unit of electricity produced.

A first step CA could undertake is to qualify nuclear power to receive the carbon credits that afforded wind and solar power. This action would make nuclear power more competitive. It would also send a signal to the companies developing advanced nuclear technologies that they are welcome in CA to develop their innovative technologies for both domestic use and for export.


  1. Good. Time to follow JFK's lead and drop the Calif. bias toward the gas folks.

    Our problems are far bigger than warming... (2015)
    Dr. A. Cannara
    650 400 3071

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