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This white paper identifies guiding principles that can assist power system planners in conducting analysis of grid reliability impacts associated with meeting carbon dioxide emission reduction targets, with specific reference to the United States’ Clean Power Plan (CPP). The CPP, issued in August 2015 by the U.S. Environmental Protection Agency, sets limits on carbon dioxide emissions from existing fossil fuel-fired generators, and requires states to consider grid reliability impacts in their compliance plans. This white paper aims to promote robust analysis of the reliability impacts of the CPP by recommending guiding principles related to: 1) transparency and stakeholder engagement; 2) study methodology and interactions between studies; 3) study inputs, sensitivities and probabilistic analysis; and 4) tools and techniques. Though specifically crafted with reference to the CPP, the principles and analysis considerations presented in this white paper are generally applicable to other grid integration studies in different power system contexts.
Located in Integration Topics / Grid Integration Studies / Grid Integration Studies folder
This white paper provides guidance for Mexico’s electricity system planners and other stakeholders on how to develop a comprehensive grid integration study. Drawing from the IEA’s Expert Group Report on Recommended Practices 16. Wind Integration Studies, this report contextualizes recommendations and best-practices specifically to support Mexico’s goals of increasing the contribution of RE to the nation’s electricity supply. Throughout the report, the authors provide expert insights into how Mexico can prioritize near-term versus long-term data collection, analyses, and other actions to understand and address the impacts of higher wind and solar penetration levels associated with Mexico’s 35% by 2024 RE goal.
Located in Integration Topics / Grid Integration Studies / Grid Integration Studies folder
Initiated by the European Network of Transmission System Operators for Electricity (ENTSO-E), this study evaluates transmission-related challenges associated with four wind penetration growth scenarios (no wind growth from 2008 levels, best estimate of wind growth, optimistic but feasible growth, and growth when further grid enhancements are made beyond 2015). The study includes recommendations related to network finance, reinforcements, grid security and flexibility, consents, coordinated operation, grid code, network access rules, market development, offshore grids, and control of wind generation.
Located in Integration Topics / Grid Integration Studies / Grid Integration Studies folder
Developed in response to the ambitious RE targets established by the Hawaii Clean Energy Initiative, the Hawaii Solar Integration Study evaluates the operational impacts of high penetrations of solar PV (including both centralized and distributed PV) on the electricity grids of two Hawaiian islands: Maui and Oahu. The two islands provide examples of small power grids with differing levels of firm and RE capacity. The study examines variability, the ability to curtail power output, grid support, and load characteristics in the context of increasing variable RE on these systems. The technical reports underlying the summary are available here.
Located in Integration Topics / Grid Integration Studies / Grid Integration Studies folder
The All Island Grid Study represents a comprehensive assessment of the power system on the island of Ireland to accommodate significant renewable energy penetration (including variable RE as well as dispatchable RE resources) by 2020. The study is divided into four “workstreams:” resource assessment, portfolio screening study, dispatch study, network study, and costs and benefits. The results include the climate change and energy security impacts, as well as the investment costs, associated with the RE scenarios.
Located in Integration Topics / Grid Integration Studies / Grid Integration Studies folder
This report discusses system operations and investment in liberalized electricity markets in which greater variable RE and energy efficiency resources are being deployed. It overviews current and foreseen challenges and possible policy and regulatory solutions to improve the cost efficiency and flexibility of the grid. Chapter 3 (pg. 36) outlines operational challenges associated with significant variable RE penetration.
Located in Integration Topics / System Operations Improvements / System Operations Improvements folder
This report, commissioned by the Western Governors’ Association in the United States, provides an assessment of system operational measures that could reduce costs of wind and solar integration to the end-users. The report identifies challenges to adopting these measures and recommendations for action at the state level. Especially useful are the high-level and accessible explanations of these operational measures.
Located in Integration Topics / System Operations Improvements / System Operations Improvements folder
This report summarizes effective actions that countries have taken to integrate significant variable RE. It includes detailed case studies such as how Australia and Spain each developed and integrated advanced forecasting techniques (pg. 49 and 105), and how Spain allowed for larger balancing areas (pg. 104). The report explores additional topics and case studies, including Ireland, Denmark, Germany, and the United States.
Located in Integration Topics / System Operations Improvements / System Operations Improvements folder
This manual includes the instructions, rules, procedures and guidelines that were established by the PJM regional transmission operator to support operations, planning, and accounting for both the regional transmission system and the PJM energy market.
Located in Integration Topics / System Operations Improvements / System Operations Improvements folder
Order 888 mandates that electrical services and marketing functions be disaggregated and requires utilities to provide open access to their energy rate schedules. The order also makes provisions for conventional utilities to recover stranded costs and for transmission owners to offer their services on the open market.
Located in Integration Topics / System Operations Improvements / System Operations Improvements folder
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