In Germany, where renewables have mostly replaced nuclear power, carbon emissions are rising, even as Germans pay the most expensive electricity rates in Europe. In South Australia, the all-wind strategy is taking its toll. And in California, the costs of renewables are also apparent. - Eduardo Porter - New York TimesRecently a multitude of exceptional articles have been written on the challenges facing nuclear power plants in the United States, mostly without mentioning an alternative to competing subsidies.
- A $30/tonne CO2 equivalent price would equate to adding $12-$15 per megawatt-hour on the most efficient natural gas-fired generators. $30 is a familiar figure thrown about in Canada.
- The United States Government's Interagency Working Group on Social Cost of Carbon has a complex methodology of working out values: using a 4% discount rate they provide a 2016 value of $38/metric ton CO2, but that's in 2007 dollars - it's about $44/t CO2e in 2016 dollars, putting the social cost per megawatt-hour of natural gas-fired generation at $17.5-$22.5/megawatt hour.
A very educational read is Will Boisvert's Renewables Subsidies Are Killing Nuclear and Threatening Climate Progress, Bloomberg New Energy Finance Study Shows:
Why are nuclear plants going broke? The immediate reason is cheap gas. The plunge in natural gas prices caused a collapse in the price of natural gas-fueled electricity, which has slumped below the production costs of nuclear plants. Bloomberg predicts that in the sprawling PJM grid wholesale prices will be $28.50 per megawatt-hour in 2017, lower than average nuclear production costs of $35.50 per megawatt-hour. Facing losses like that, nuclear utilities are closing up shop.I'll read most anything by Will Boisvert -in English- but I don't see a link to the Bloomberg New Energy Finance Study (nor could I locate it), and there's no mention of carbon pricing.
But the impact of market forces has been worsened by public policy that neglects nuclear power and adds to the pressure it faces. Federal, state and local governments have massively intervened in energy markets to support renewable power with subsidies and mandates, but given virtually no support to existing nuclear plants. These biases tilt the playing field for commercial competitors of nuclear plants.
The $23 per megawatt-hour federal Production Tax Credit for wind farms, for example, can be larger than the total wholesale price nuclear plants get for their power in some regions, according to Bloomberg data. (It’s also larger than the $5-15 per megawatt-hour subsidies Bloomberg reckons nuclear plants need to break even.)