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This report estimates the storage required to enable PV penetration up to 50% in California (with renewable penetration over 66%), and quantifies the complex relationships among storage, PV penetration, grid flexibility, and PV costs due to increased curtailment. The authors find that storage needs depend strongly on the amount of other flexibility resources deployed. With very low-cost PV (three cents per kilowatt-hour) and a highly flexible electric power system, about 19 gigawatts of energy storage could enable 50% PV penetration with a marginal net PV levelized cost of energy (LCOE) comparable to the variable costs of future combined-cycle gas generators under carbon constraints.
Located in Topics & Resources / Demand Response and Storage / Demand Response and Storage Folder
This filmed presentation summarizes a 2014 report from Ecofys. The first half of the video discusses the grid operation challenges that arise with high penetrations of variable RE. The second half of the video describes the various technical, regulatory, and market options for improving flexibility of the grid over the short-, medium-, and long-term. The Ecofys report includes factsheets on the following topics: Active Power Control (pg. 19), Demand Management in Industrial Installations and in Services and Households (pgs. 21-22), Electric Vehicles (pg. 23), Compressed Air Storage (pg. 27), Fly Wheels (pg. 28), and Batteries (pg. 29).
Located in Topics & Resources / Ancillary Services / Ancillary Services folder
Framework for Readiness Assessments of Utility-Scale Energy Storage
Energy storage can help address many of the challenges of the changing power sector by increasing system flexibility and strength. This report outlines a framework for policymakers to manage utility-scale energy storage.
Located in News and Events
Grid-Scale Battery Storage: Frequently Asked Questions
The National Renewable Energy Laboratory (NREL) has released a fact sheet titled, "Grid-Scale Battery Storage: Frequently Asked Questions." This fact sheet addresses questions and concerns policymakers and grid system operators may have regarding grid-scale battery energy storage systems.
Located in News and Events
The report includes both a broader look at the European hydropower market as well as detailed flexibility case studies in the Nordic power system, Austria, Poland, Norway, Germany, Switzerland and Ireland.
Located in Topics & Resources / Flexible Generation / Flexible Generation folder
This report details the barriers that restrict the deployment of energy storage technologies in the United States. The findings are based on interviews with stakeholders and review of regulatory filings in four regions roughly representative of the country. The report suggests that while high capital costs remain a barrier to energy storage, deployment is also impacted by regulatory, market (economic), utility and developer business model, cross-cutting, and technology barriers.
Located in Topics & Resources / Demand Response and Storage / Demand Response and Storage Folder
New Page - Energy Storage
The Greening the Grid team has published a new page on Grid Integration titled, “Energy Storage.” This page provides basic background on energy storage technologies and the factors that influence their deployment.
Located in News and Events
This case study is based on interviews with PG&E (a California utility) and explores the institutional circumstances surrounding the implementation of PG&E’s SmartRate™ dynamic rate program. The case study focuses on implementation and procedural challenges, reactions and perceptions of stakeholders involved, and lessons learned. The case study is not intended to evaluate the program but offers insight into the internal workings, attitudes, and relationships of a utility successfully implementing a demand response program.
Located in Topics & Resources / Demand Response and Storage / Demand Response and Storage Folder
Policy and Regulatory Environment for Utility-Scale Energy Storage: India
Energy storage has the potential to address many challenges in India's evolving power sector. This report was developed for policymakers to identify regulation, policy, and program priories that will enable storage deployment in India.
Located in News and Events
Power System Planning: Advancements in Capacity Expansion Modeling
An electricity capacity expansion model (CEM) is a tool used in long-term planning studies for the power sector. This fact sheet summarizes key advancements in the CEM process resulting from low-cost clean energy, storage, and other new technologies.
Located in News and Events
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