Comment by AtlasBarfed 11 hours ago
Highest demand for energy is during the day.
Highest output of solar is during the day.
Your comment about energy supply implies we just don't need any solar at all.
I think we need is a large set of incentives to do home solar with storage.
> We absolutely need more solar, and a lot of it. Just that we don't necessarily need more of it everywhere without making accompanying storage investments. (+ possibly transmission investments).
Maybe not literally everywhere, but almost everywhere would continue to benefit from more solar even if it's lacking storage. Despite the duck curve.
> We shouldn't be overpaying in generous subsidies to homeowners for power mid-day where it's now worth the least.
It's a bad way to do a renewable subsidy, but we do want some kind of subsidy and flawed is usually better than nothing. I'd prefer replacing the subsidies with a carbox tax but that is not going to happen.
Thank You. That seems like some reasonable issues to address.
Highest demand for energy in residential areas is generally at the beginning and end of the work day, which is not when solar peaks at all.
p.s. owner of self-installed 7kW ground mount array in New Mexico
My comment doesn't imply that at all. We absolutely need more solar, and a lot of it. Just that we don't necessarily need more of it everywhere without making accompanying storage investments. (+ possibly transmission investments).
We shouldn't be overpaying in generous subsidies to homeowners for power mid-day where it's now worth the least.
Early net metering schemes were often basically 1:1. You supply a kWh mid-day where it's not worth much and that's "equal" in value to you drawing a kWh at 18:30, even though the market price of electricity then might be 10x what it was when you earned your "credit" and the grid is far more strained.
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Most regions that already have a decent amount of behind the meter home solar at this point exhibit a strong "duck curve" effect, at least on sunnier days. Mid-day demand is deeply suppressed while solar output is strongest.
Meanwhile, the AM/PM peaks remain and are at times of the day when solar output is very low.
With more storage - solar can help cover those peaks (+ overnight demand). Without, you're not accomplishing all that much by just depressing mid-day loads even further unless you can restructure society to better match it's energy demands to those solar supply curves.
A few illustrations/articles:
https://www.eia.gov/todayinenergy/detail.php?id=56880
https://www.eia.gov/todayinenergy/detail.php?id=42915
https://www.iso-ne.com/about/where-we-are-going/solar-power-... (New England).