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The SunDial Framework: Enabling High Penetration Solar through the Integration of Energy Storage, Demand Management, and Forecasting

: Kromer, M.; Zeifman, M.; Roth, K.; Yip, T.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 : A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC, 10-15 June 2018, Waikoloa Village, HI, USA
Piscataway, NJ: IEEE, 2018
ISBN: 978-1-5386-8529-7
ISBN: 978-1-5386-8530-3
World Conference on Photovoltaic Energy Conversion (WCPEC) <7, 2018, Waikoloa/Hawaii>
Photovoltaic Specialists Conference (PVSC) <45, 2018, Waikoloa/Hawaii>
Photovoltaic Science and Engineering Conference (PVSEC) <28, 2018, Waikoloa/Hawaii>
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <34, 2018, Waikoloa/Hawaii>
Conference Paper
Fraunhofer CSE ()

An open data exchange standard and vendor-agnostic control platform (the “SunDial System”) are used integrate facility loads and demand management, battery energy storage, and solar PV by optimizing power flow on the distribution system in high-penetration solar environments. The integration of forecasting and day-ahead shaping of customer loads enabled by SunDial reduces the need for storage by 10-20% and reduces LCOE by ~10% at solar penetrations ranging from 50 to 150% of peak load. A pilot deployment manages a portfolio of 1.5MW of PV, 0.5MW/1.0MWh battery, and 3.5 MW of customer load on a National Grid distribution feeder through June 2019 over a range of use cases.