全球智库信息集成服务系统(G2TT): Utility-Scale Renewable Energy

G2TT

来源类型	Fact Sheet
规范类型	其他
	Utility-Scale Renewable Energy
	Joshua Ryor; Letha Tawney
发表日期	2015-02
出版年	2015
语种	英语
概述	Executive Summary Comparing the cost of renewable energy options to traditional electricity supply is critical for decision-makers, policy experts, investors, and regulators to determine the most efficient and cost-effective way to supply electricity. The problem is that comparing these costs “apples-to-apples” can be difficult and confusing. That means that businesses, policymakers, and other groups may be choosing an electricity option based on inaccurate or incomplete information. With the cost of renewable energy systems falling globally—particularly large-scale wind and solar energy in the United States—these comparisons will become more and more important. WRI’s new fact sheet series, Understanding Renewable Energy Cost Parity, outlines, the accuracy of these comparisons is drastically improved by clearly defining the perspective from which the comparison is being made; the electricity supply options being considered; and what other factors should be taken into account.
结论	A power purchase agreement (PPA) option is cost-competitive for end-use consumers when the full price of electricity paid is lower than or equal to the retail electricity price over the lifetime of the project or PPA contract. In the traditional market context, a renewable energy project is cost-competitive (that is, it presents economic savings) against another technology, that fills the same capacity need, when it has a lower or equal average cost of energy (past projects or LCOE) and/or a lower risk profile. Renewable energy projects can lower wholesale generation prices through a lower marginal cost of production and thus the retail electricity price paid by end-use consumers – which includes the wholesale generation price. However, a renewable energy project is cost-competitive against the current wholesale market generation mix (that is, can generate profit for the owner) only when the average cost of energy of a project is lower than, or equal to, the average wholesale prices at times when the project generates power. When a renewable energy project is cost-competitive against the current generation mix, wholesale buyers may lock in a fixed price through a PPA to limit the risk associated with wholesale price volatility. This in turn can also reduce the retail electricity price paid by end-use consumers.
摘要	This factsheet is simple, go-to resource outlining how electricity supply options (renewable vs. traditional), specifically utility-scale renewable energy systems, can be appropriately compared. This publication is the final factsheet in a series of three tools to help break down these analyses for greater clarity and precision in weighing the cost effectiveness of renewable energy options.
主题	Energy
标签	corporate sustainability ; energy ; renewable energy ; renewables ; united states
区域	United States
URL	https://www.wri.org/publication/utility-scale-renewable-energy
来源智库	World Resources Institute (United States)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/27930
推荐引用方式 GB/T 7714	Joshua Ryor,Letha Tawney. Utility-Scale Renewable Energy. 2015.