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New Resource - Solar and Wind Participation in Automatic Generation Control Systems
The National Renewable Energy Laboratory (NREL) has released a report titled, "Solar and Wind Participation in Automatic Generation Control Systems." This report focuses on emerging technological and regulatory considerations for using solar and wind generators to provide essential reliability services through participation in area-wide automatic generation control (AGC) systems.
Located in News and Events
Operational flexibility refers to the ability of a power system to respond to changes in electricity demand and generation. Flexibility is particularly important for power systems that integrate high levels of solar and wind, whose power outputs can be variable and uncertain, creating a fluctuating supply.
Located in Quick Reads / Fact Sheets
This fact sheet reviews administrative and market-based mechanisms for procuring a cost effective mix of flexible resources needed to ensure system reliability and adequacy.
Located in Quick Reads / Fact Sheets
International Energy Agency, 2018
Located in Integration Topics / Flexible Generation / Flexible Generation folder
This report provides a concise global overview of grid integration challenges and emerging solutions, covering topics such as supply-side flexibility innovations, flexibility from distributed generation, curtailment, transmission and distribution system planning, and electricity market design. The report draws on experience from several jurisdictions where renewables provide 20%–40% of electricity generation, with particular emphasis on experiences in Germany, Denmark, and California. The report also references actions by developing countries (China, India, and South Africa).
Located in Integration Topics / Cross-Cutting / Cross-cutting links folder
This report, written to inform energy planning in China, showcases regulatory support, policies, and financing innovations that have enabled DPV deployment and market growth in the U.S.
Located in Topics & Resources / Regulation & Public Policy / Regulation & Public Policy folder
High penetration of DPV often leads to the infamous “duck curve,” the formation of two daily peaks in the morning and evening when PV is not available. This easy to read report assesses a variety of options to mitigate the “duck curve” from targeted efficiency, time of use rate design, storage, demand response, balancing, and complementing DPV with peak-oriented renewables. Implantation of these recommendations flattens the demand curve, allowing for additional DPV.
Located in Topics & Resources / Grid Planning, Integration, & Operations / Grid Planning, Integration, & Operations folder
As part of the U.S. SunShot Initiative—aiming to make PV electricity cost-competitive with conventional generation by 2020—this report analyzes the impact of high-penetration variable generation on the distribution grid, it demonstrates that in most cases DG can be safely integrated at much higher levels than interconnection standards allow. By streamlining interconnection processes, deploying advanced inverter functionalities, and coordinating DGPV, upwards of 350 GW can be hosted on the U.S. grid with little additional hardware. The report also outlines challenges to interconnection such as voltage regulation, power flow, and protection issues. It then studies the role of storage and complementary technologies to overcome reliability constraints. This research is applicable outside of the U.S. in demonstrating how to maximize an existing grid for DG.
Located in Topics & Resources / Grid Planning, Integration, & Operations / Grid Planning, Integration, & Operations folder
This article provides an overview of the traditional power system planning process in the United States, summarizes how legal authority for transmission planning is allocated between states and the U.S. government, and evaluates the challenges and solutions that state regulators have encountered with planning new transmission for renewable energy development. In addition to a discussion about the important merits of increased balancing area cooperation for system operations and transmission planning, the article includes a detailed review of the Renewable Energy Zones transmission planning process as implemented in Texas’ Competitive Renewable Energy Zones (CREZ) approach.
Located in Integration Topics / Planning for Grid Integration / Planning for Grid Integration folder
This report presents a brief introduction to the IRP process as it has been implemented in the United States and describes the purpose and use of the IRP process. The report presents several case studies of IRPs and summarizes how they differ in terms of planning horizon, frequency of updates, representation of existing resources and planned retirements, and relationship with long-term procurement processes. The case studies include examples of best-practices for including renewable energy and energy efficiency considerations in the IRP process.
Located in Integration Topics / Planning for Grid Integration / Planning for Grid Integration folder
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