Guest post by Albert Parker
en.wikipedia.org/wiki/Crescent_Dunes_Solar_Energy_Project#/media/Fi...
It is in the news, as expected Crescent Dunes, the world largest concentrated solar power plant featuring 10 hours of molten salt thermal energy storage, just went bust.
https://www.reviewjournal.com/opinion/letters/letter-much-touted-cr...
https://www.cato.org/blog/crescent-dunes-another-green-flop
https://nationalinterest.org/blog/buzz/another-federally-backed-sol...
The electricity is produced, as usual, not when needed, but when the sun was shining (very often no electricity was produced when there was sun)
See EIA data displayed on Wikipedia.
Thanks to the savvy energy administrators of the Obama era, the US taxpayers have thus paid unpredictable, solar electricity $2.38 per kWh.
Promises were, Crescent Dunes production would be in excess of 500,000 MWh per year over 25 years, or 12,500,000 MWh, of fully dispatchable (or sort of) electricity, at a cost of $0.08 per kWh.
The federal government provident the loan guarantees for the project, because no bank would loan money on such a risky project. With bankruptcy, the banks get paid the full amount of the loans, but taxpayers are screwed, again.
Any subsidies, tax credits and investment cash credits, etc., likely were collected upfront by the politically well-connected Obama, etc., friends, in the usual manner, all justified under the mantra of "saving the world".
VERMONT AND MAINE
Vermont and Maine have similar useless programs, using wind and solar electricity to power air source heat pumps, ASHPs, for heating houses and other buildings.
Most ASHP owners LOSE money if ALL costs are considered. See URL.
http://www.windtaskforce.org/profiles/blogs/cost-savings-of-air-sou...
CADMUS Survey of Houses with ASHPs
CADMUS, an energy consultant hired by the Vermont Department of Public Service, performed a survey of 77 ASHPs at 65 sites in Vermont.
https://publicservice.vermont.gov/sites/dps/files/documents/2017%20...
Heat from Traditional Systems and ASHPs: CADMUS calculated the total season heat to buildings at an average of 92 million Btu per site
- The space heat to the sites was 65 x 92 million Btu/site = 5,980 million Btu from all fuels. See Note, and see URL, page 22
- The space heat provided by ASHPs was 77 x 21.4 million Btu/ASHP = 1,648 million Btu. See URL, page 21
- Traditional systems provided 5980 – 1648 = 4,332 million Btu, or 4332/5980 = 72% of the total space heat.
No wonder the energy cost savings were only $200/ASHP per year, instead of the $1200/y to $1800/y bandied about on websites of ASHP promoters. See URLs.
NOTE: Before ASHPs, the traditional systems provided all space heat and all DHW. ASHPs typically provide only space heat. The CADMUS report stated it obtained heat to buildings primarily from owner fuel and electric bills before and after ASHPs. That means the 92 million Btu/site likely included DHW. The CADMUS report does not clearly state, if the 5,980 million Btu includes DHW, which is about 15% of the total. If DHW is deducted, the adjusted heat to sites would be 5,083 million Btu, and the traditional systems, after ASHPs, would provide 5083 – 1648 = 3,435 million Btu, or 3435/5083 = 68% of the total space heat, which would be close to the estimate of 61% from the analysis method used in this article. See Appendix 2.
http://www.windtaskforce.org/profiles/blogs/air-source-heat-pumps-a...
http://www.windtaskforce.org/profiles/blogs/fact-checking-regarding...
http://www.windtaskforce.org/profiles/blogs/vermont-baseless-claims...
Capital and Annual Operating Cost: CADMUS and VT-DPS concluded, on average, an owner invested $4500 in an ASHP (less with subsidies), but had energy cost savings of only $200/y; some had more savings than others.
Amortizing $4500/ASHP at 5%/y for 15 years (the factory warrantee is for 10 years), the annual payments would be $427.03/y.
https://www.myamortizationchart.com
In addition, there would be annual costs for scheduled and unscheduled service calls ($100+/call), likely involving parts and labor, plus annual costs for maintenance contracts ($100+/contract).
Those costs would be in addition to amortizing the cost of the traditional heating system investment over 15 years, plus the annual cost of service calls, likely involving parts and labor, and annual cost of maintenance contracts.
Independent energy systems engineers predicted installing ASHPs in energy-hog houses would result in an annual loss to owners, if overall costs of having two heating systems were accounted for, some years ago, but they were ignored.
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