The
Best-Laid Energy Plans
The
feds bet $737 million on a salt tower for solar power. Wall Street Journal
In September 2011, the Energy Department described how the 110-megawatt facility would “be the first of its kind in the United States and the tallest molten salt tower in the world,” powering more than 43,000 homes a year. The precedent was Solar Two, a small pilot plant decommissioned in 1999 that had shown it was technically feasible to use molten salt to store and generate power. But in a 2006 report the Energy Department said the 10-megawatt facility “was never expected to be a viable commercial-scale plant and, in fact, did not validate economic feasibility.”
No worries. It’s only taxpayer money, and the
feds jumped into Crescent Dunes anyway. The Department of Energy finalized its
loan guarantee on Sept. 23, 2011, a week before the federal loan program
expired. A month earlier Nevada had approved $119.3 million in tax abatements
for Crescent Dunes over 20 years. The plant also received some $140 million in
private investment.
Crescent Dunes began by missing the deadline
established by its agreement with NV Energy, becoming operational months late.
Commercial operations began in November 2015, but less than a year later the
facility went offline because of a “massive leak in the hot salt tank,”
according to SolarReserve, a partial owner of Crescent Dunes.
Through the first half of 2017 the plant
generated no electricity and no sales, according to its disclosures to the
Federal Energy Regulatory Commission. Yet in April 2017 the Department of
Energy proclaimed Crescent Dunes a “success story” taken from “mirage to
reality,” “a milestone for the country’s energy future,” and a global
“blueprint for solar projects.”
In a fact sheet advertised as “up-to-date as of
June 2017,” the Energy Department claimed Crescent Dunes was “operational” and
projected energy generation of up to 482,000 megawatt hours a year. The plant
never generated that much power in the entirety of its operations. An Energy
Department spokesman declined comment.
Crescent Dunes resumed operations in the latter
half of 2017, but problems persisted. In a June 2019 report to the Public
Utilities Commission of Nevada, NV Energy described how the plant “has
experienced frequent and prolonged outages.” Crescent Dunes’ performance
problems were so severe that they posed “the most significant risk” for NV
Energy’s ability to meet its renewable portfolio standard obligations, the
utility said.
Last summer Crescent Dunes’ hot salt tanks
“suffered a catastrophic failure, which caused ground contamination and
required the removal of the solar tower that is essential to the plant’s
ability to generate any electrical power to function as designed,” SolarReserve
said in recent court filings.
Operations halted again. The Department of Energy
sent a formal default notice in September. Weeks later Crescent Dunes’ sole
customer, NV Energy, terminated its power purchase agreement. The plant has no
prospective clients and couldn’t supply energy even if it found a buyer. Even
if the plant began running again, it would face competition from solar
photovoltaic projects. Crescent Dunes’ average price was more than $132 per megawatt
hour, but Techren Solar II in Nevada’s Eldorado Valley offered the same unit of
power for $31.15 in the fourth quarter of 2019.
SolarReserve, which did not respond to requests
for comment, is now suing for the equitable dissolution of Tonopah Solar Energy
LLC, the entity created to run Crescent Dunes. In November SolarReserve told a
federal court that “the plant is moribund—neither generating energy nor
revenue” and that Tonopah is “insolvent,” has debt of more than $440 million
with “assets of much less value,” and is “unable to pay its debts as they come
due.”
Scores of new businesses fail, but private
investors lose their own money. Government investments turn on politics more
than feasibility. Hand the energy economy over to the government in the name of
climate change, and there will be countless more Crescent Dunes fiascoes.
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