Tucson Electric signs solar + storage PPA for 'less than 4.5/kWh'
Tucson Electric signs solar + storage PPA for 'less than 4.5¢/kWh'
AUTHOR
Gavin Bade
May 23, 2017
Dive Brief:
Tucson Electric Power has signed a power purchase agreement for a solar-plus-storage system at "an all-in cost significantly less than $0.045/kWh over 20 years," according to a company official. Exact prices are confidential, but a release pegged the PPA for the solar portion of the project at below $0.03/kWh.
The project, being developed by an affiliate of NextEra Energy Resources, calls for a 100 MW solar array combined with a 30 MW, 120 MWh energy storage system. If the pricing proves accurate, it would represent a major cost reduction for combined storage facilities since the signing of the last significant PPA — a $0.11/kWh Hawaii contract in January.
The PPA would confirm a forecast in Arizona's proposed "Clean Peak Standard" that solar-plus-storage facilities could compete with gas peakers on price. But TEP does not support the proposal, now on hold with regulators, and Energy Supply Director Carmine Tilghman said batteries do not provide the same capabilities as peaker plants.
http://www.utilitydive.com/news/tucson-electric-signs-solar-storage-ppa-for-less-than-45kwh/443293/
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