Author Topic: Addressing climate change  (Read 6930 times)

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Offline Granny

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Re: Addressing climate change
« Reply #30 on: May 25, 2019, 10:11:22 pm »
You need to build completely redundant capacity since you can't risk blackouts if renewable output goes to zero. This doubles the capital cost of renewables if you use backups like gas. If you try to provide backups with batteries you need enough backup to deal with the statistically unlikely but possible periods where renewables could be not producing due to weather events. The cost of such batteries is too expensive to even consider.
You are right, the costing does not include backup power:
LCOE as a measurement does not take into account some external costs, like storing solar power for cloudy days, which is one of the lingering obstacles preventing the widespread adoption of solar.

I think we'll be using a mix of sources feeding the grid for a while, so backup isn't an issue now and technological inprovements will take care of it in the future.