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Integrating Solar PV (Photovoltaics) in Utility System Operations: Analytical Framework and Arizona Case Study

Sources:

Energy

Authors:

Jing Wu

Audun Botterud

Andrew Mills

Zhi Zhou

Bri-Mathias Hodge

Mike Heaney

Date:

1 June 2015

The authors of this journal article propose a systematic framework to estimate the impact on operating costs that are due to uncertainty and variability in renewable resources. The framework quantifies the integration costs associated with sub-hourly variability and uncertainty as well as day-ahead forecasting errors in solar photovoltaics (PV) power. A case study illustrates how changes in system operations may affect these costs for a utility in the southwestern United States (Arizona Public Service Company). The authors conduct a sensitivity analysis under different assumptions about balancing reserves, system flexibility, fuel prices and forecasting errors.