Reduce ITC and PTC to 2021 values#450
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…eter wind. Set itc to 0 for generic system, since thermal is the default there and standalone storage isn't elegible
mjprilliman
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I'd just double check with @cpaulgilman or @tyneises on those defaults changing from scientific to integer notation as I feel like that is something that has come up in the past? I could also just be mixing that up with something different. The actual rate changes all look good to me.
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Is this format change in the default files normal? There are a lot of instances of this that must have just happened automatically
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Yeah, that also happened to me on https://github.com/NREL/SAM/pull/421/files and no one thought it was a big deal. I don't know the history, so I'll leave this open until ~4 MT today in case Paul or Ty want to weigh in.
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Remind me why this one's going to 0?
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Generic system's defaults assume a thermal system, which is not subject to the ITC. Some users use generic battery for a stand-alone battery, but stand alone batteries also aren't subject to it. I figure it's better to make someone who is importing an existing renewable generation profile (like I did on the webinar) increase it, than to have it be too high for the two most common cases.
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Assuming zero because the technology is not defined in Generic?
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Exactly. In fact the "heat rate" default applies the generic system might be a thermal generator.
Most technologies got a reduction from 26% to 22%. It looks like we missed a few last year (biopower, geothermal, some CSP) so these have been reduced from 30% to 22%. Source for this: https://programs.dsireusa.org/system/program/detail/1235
Additionally, reduce the wind PTC from $0.022/kWh to $0.015. Source: https://windexchange.energy.gov/projects/tax-credits This a 2020 value and might require an additional update when the 2021 values are more clear.
Update the LCOE values in test_results_win64 to reflect this. Will do Linux once these results are approved.