Performance assessment of the PNM Prosperity electricity storage project | Zendy

Dakota Roberson | Zendy; James Ellison | Zendy; Dhruv Bhatnagar | Zendy; David Schoenwald | Zendy

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Performance assessment of the PNM Prosperity electricity storage project

Author(s) -

Dakota Roberson,

James Ellison,

Dhruv Bhatnagar,

David Schoenwald

Publication year - 2014

Language(s) - English

Resource type - Reports

DOI - 10.2172/1177058

Subject(s) - smoothing , prosperity , electricity , energy storage , photovoltaic system , battery (electricity) , environmental economics , automotive engineering , environmental science , computer science , engineering , electrical engineering , process engineering , operations management , reliability engineering , power (physics) , economics , physics , computer vision , economic growth , quantum mechanics

The purpose of this study is to characterize the technical performance of the PNM Prosperity electricity storage project, and to identify lessons learned that can be used to improve similar projects in the future. The PNM Prosperity electricity storage project consists of a 500 kW/350 kWh advanced lead-acid battery with integrated supercapacitor (for energy smoothing) and a 250 kW/1 MWh advanced lead-acid battery (for energy shifting), and is co-located with a 500 kW solar photovoltaic (PV) resource. The project received American Reinvestment and Recovery Act (ARRA) funding. The smoothing system is e ective in smoothing intermittent PV output. The shifting system exhibits good round-trip efficiencies, though the AC-to-AC annual average efficiency is lower than one might hope. Given the current utilization of the smoothing system, there is an opportunity to incorporate additional control algorithms in order to increase the value of the energy storage system.

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