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Estimating the benefits and costs of DPV helps power system stakeholders evaluate appropriate regulatory measures and compensation programs for DPV. To inform these decisions, this report describes current and potential future methods, data, and tools to estimate the benefits and costs of DPV from the utility or electricity-generation system perspective. Although the report is explicitly written in the context of informing estimation of DPV costs and benefits to the United States electricity system, it provides insights relevant to power systems around the world.
Located in Topics & Resources / Regulation & Public Policy / Regulation & Public Policy folder
Utilities worldwide are concerned about the financial impact of increasing DPV adoption among their retail customers. This report analyzes the impact of DPV deployment on distribution utility revenues and retail electricity tariffs in Thailand. It provides policymakers, utilities, and other energy practitioners a real-world example of how DPV affects certain stakeholders.
Located in Topics & Resources / Regulation & Public Policy / Regulation & Public Policy folder
Because of Jamaica’s high retail electricity prices, significant opportunity exists for DPV as an economic alternative. This paper reviews the effectiveness of Jamaica’s net billing pilot program, and identifies remaining challenges including a complex interconnection process, contractual ambiguity, and stakeholder equity concerns. The report provides several specific recommendations like shortening interconnection timelines, reducing caps on individual systems, and moving beyond a pilot phase. Many of these recommendations are applicable to other countries, particularly those with similarly high electricity rates.
Located in Topics & Resources / Regulation & Public Policy / Regulation & Public Policy folder
This report explores how various balancing areas in North America provide ancillary services and addresses regulatory institutional practices for maintaining system integrity. The report surveys different practices that balancing areas use to plan for and manage the provision of ancillary services and makes recommendations related to enlarging and/or increasing the coordination among balancing areas to provide ancillary services. The authors seek to clarify the balancing area rules that each entity much follow, and how the many balancing areas in North America can operate in a homogenous way to address ancillary service requirements for variable RE generation.
Located in Topics & Resources / Ancillary Services / Ancillary Services folder
This document includes a summary of the Spanish power system schedule (page 5) and electricity price stacks with ancillary services broken out (page 13). The report also includes a chart showing the impact of wind on primary, secondary, tertiary, and supplemental reserves (page 27). Also included is a description of Spain’s RE generation control center.
Located in Topics & Resources / Ancillary Services / Ancillary Services folder
This study summarizes the results of an in-depth modeling of the U.S. Eastern Interconnection, wind integration study, and transmission analysis. The study examines various technical issues under a 20% wind integration scenario. Section 5 examines power system regulation and balancing, and Section 6 explores impacts on systems operation. The report assesses ancillary services that provide both spinning and nonspinning reserves and offer frequency response, balancing, and system security.
Located in Topics & Resources / Ancillary Services / Ancillary Services folder
The 21st Century Power Partnership supports global power sector transformation. The Partnership has developed a curated, annotated resource library that provides reports, academic literature, case studies, and good practices to support distributed generation regulation in a variety of power system contexts. The library is organized around several topical areas: Ratemaking, Understanding Impacts, Interconnection, Alternative Business and Regulatory Models, Planning, and Case Studies.
Located in Topics & Resources / Distributed Generation / Distributed Generation folder
High penetrations of PV on a distribution system can lead to reliability impacts related to overload, voltage, reverse power flow, protection, and circuit configuration. Drawing on the results and lessons-learned from a five-year study of the Southern California Edison (SCE) distribution system from 2010 – 2015, this handbook presents a detailed analysis of the potential impacts and mitigation techniques of PV integration. Written for distribution engineers, the handbook also provides a model-based study guide for assessing PV impacts, covering topics such as model development, data validation and measurement, study criteria, and the steps involved in power flow and fault analysis. While the impacts and mitigation techniques described in this handbook are derived from research that focused on the integration of utility-scale PV systems (1-5 MW), much of the information is also relevant for the integration of a large number of small, distributed PV systems.
Located in Topics & Resources / Distributed Generation / Distributed Generation folder
Estimating the benefits and costs of achieving significant deployment of distributed PV helps power system stakeholders evaluate regulatory measures and compensation programs for distributed PV. To inform these decisions, this report describes current and potential future methods, data, and tools that could be used with different levels of sophistication and effort to estimate the benefits and costs of distributed PV from the utility or electricity-generation system perspective. Although the report is explicitly written in the context of informing estimation of distributed PV costs and benefits to the United States electricity system, the discussions of the various methods, level of effort, and data and modeling requirements provide insights relevant to power systems outside of the U.S. The report provides methodologies for estimating distributed PV benefits and costs for the following categories: energy, environmental, transmission and distribution losses, generation capacity, transmission and distribution capacity, ancillary services, and other factors.
Located in Topics & Resources / Distributed Generation / Distributed Generation folder
This paper quantifies the benefits of various options for increasing power system flexibility. The authors evaluate the benefits of flexibility using two primary metrics: economic carrying capacity and system costs. Results indicate that flexibility can increase the economic carrying capacity of wind and solar energy and reduce system costs. Multiple combinations of flexibility options are evaluated, including combinations of demand response, energy storage, enhanced cooperation among balancing areas, lower minimum generation requirements for gas and coal generators, among others.
Located in Topics & Resources / Flexible Generation / Flexible Generation folder
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