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Integrating Variable Renewable Energy Into the Grid: Key Issues
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To foster sustainable, low-emission development, many countries are establishing
ambitious renewable energy targets for their electricity supply. Because solar and wind tend to be more variable and uncertain than conventional sources, meeting these targets will involve changes to power system planning and operations. Grid integration is the practice of developing efficient ways to deliver variable
renewable energy (VRE) to the grid. Good integration methods maximize the cost effectiveness of incorporating VRE into the power system while maintaining or increasing system stability and reliability.
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Resources
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Fact Sheets
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Power System Planning: Advancements in Capacity Expansion Modeling
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An electricity capacity expansion model (CEM) is a tool or suite of tools used in long-term planning studies for the power sector. CEMs are used to identify the least-cost mix of power system resources, taking into consideration new policies, technologies, demand projections, and other factors. CEM analysis can be an important tool in developing power sector master plans or integrated resource plans. Low-cost clean energy, storage, and demandside management technologies, along with low-cost computing have improved the quality and complexity of CEM analysis. This fact sheet summarizes eight key advancements in the CEM process:
Increased temporal resolution
Increased geographic resolution
Representing RE resource variability
Energy storage technologies
Demand response, electric vehicle, and distributed energy resource representation
Climate change impacts
Technologies for deep decarbonization
Linkages across energy sectors
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Quick Reads
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Fact Sheets
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Energy Storage in South Asia: Understanding the Role of Grid Connected Energy Storage in South Asia’s Power Sector Transformation
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Energy storage can provide many grid benefits, including flexibility. This study provides a first-of-its-kind assessment of cost-effective opportunities for grid-scale energy storage deployment in South Asia.
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News and Events
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Australia's Landmark Renewable Integration Study (Webinar)
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This webinar discusses the Australian Energy Market Operator's recently published Renewable Integration Study which analyzes the challenges associated with operating the Australian National Electricity Market's (NEM) under high penetrations of variable renewable electricity.
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News and Events
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Australia’s Landmark Renewable Integration Study
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Sponsored by EPRI/ESIG/AEMO/NREL, this webinar discusses the Renewable Integrated Study (RIS) for the Australian National Electricity Market (NEM) as it evaluates challenges with the integration of high penetrations of renewable energy resources. This webinar was held on June 1, 2020 at 5:00 p.m. EDT.
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Trainings
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Webinars
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Distributed Photovoltaic Economic Impact Analysis in Indonesia
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This report presents a holistic view of DPV economic impacts in the Java-Bali region of Indonesia by assessing customer economic impacts, utility revenue impacts, and jobs and economic development impacts.
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News and Events
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Summary of potential energy storage services and required response times and durations
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The figure highlights which services can be provided, depending on the location of the storage system, as well as the required response times (left side of the bar) and duration (right side of the bar) for each service.
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Site Images
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Grid-Scale Battery Storage: Frequently Asked Questions
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Battery storage is a technology that enables power system operators and
utilities to store energy for later use. A battery energy storage system
(BESS) is an electrochemical device that charges (or collects energy) from
the grid or a power plant and then discharges that energy at a later time
to provide electricity or other grid services when needed. Several battery
chemistries are available or under investigation for grid-scale applications,
including lithium-ion, lead-acid, redox flow, and molten salt (including
sodium-based chemistries). Battery chemistries differ in key technical
characteristics, and each battery has unique advantages and disadvantages.
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Quick Reads
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Fact Sheets
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New Page - Energy Storage
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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.
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News and Events
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Energy Storage
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Energy storage refers to technologies capable of storing electricity generated at one time for later use. These technologies can store energy in a variety of forms including as electrical, mechanical, electrochemical or thermal energy. Storage is an important resource that can provide system flexibility and better align the supply of variable renewable energy with demand by shifting the timing of energy supply and demand.
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Topics & Resources
