Citizen dialog for transparent process by the Lowndes Area Knowledge Exchange
Nuclear reactor percent power from NRC data
Do nuclear reactors really deliver dependable baseload capacity?
I hear industry execs say 99.99% uptime.
The real average from seven years of NRC data for 104 reactors is 88.13%.
According to Power Reactor Status Reports
posted online by the Nuclear Regulatory Commission,
here are the actual percent power percentages over time
for the 104 listed nuclear power reactors.
The timeframe is 31 March 2006 through today, 21 May 2013.
(The NRC data appears to go back to 1999, but seven years
is a good sample to start with.)
The computation for each reactor is the sum of the uptime
percentages for each day divided by the number of days.
The total uptime is the sum of the reactor uptimes divided
by the number of reactors.
Here’s the list, sorted two ways:
Maybe one could argue that it’s not fair to include reactors down for
years in an average of active reactors.
Seems to me if it’s fair to charge Georgia Power customers for
Plant Vogtle units 3 and 4,
still not delivering any power and
19 months late and a billion over budget,
it’s fair to include reactors that are supposed to be active yet are shut down.
If big baseload is so great, why aren’t they working?
But we can go around that question altogether.
Look at Georgia Power and Southern Company’s flagship reactors:
Vogtle 1 at 91.61% and Vogtle 2 at 91.51%.
Now those aren’t bad uptimes.
But they aren’t the 99.99+% uptimes I hear industry execs claim.
Look at SO’s Hatch 1 at 90.81% and Hatch 2 at 87.30%.
Not looking so good.
And next door in Alabama, Farley 1 shows 91.01% and Farley 2 at 91.30%.
Like Vogtle, not bad, but no multiple sigmas for Farley.