| Description |
1 online resource (8 p.) : col. ill. |
| Series |
Conference paper ; NREL/CP-670-42923 |
|
Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-670-42923.
|
| System Details |
Full text available via Internet in .pdf format. Adobe Acrobat Reader required. |
| Note |
Title from title screen (viewed June 6, 2008). |
|
"Presented at SOLAR 2008 - American Solar Energy Society (ASES), San Diego, California, May 3-8, 2008." |
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"May 2008." |
| Summary |
There is confusion in the marketplace regarding the impact of solar photovoltaics (PV) on the user's actual electricity bill under California Net Energy Metering, particularly with binomial tariffs (those that include both demand and energy charges) and time-of-use (TOU) rate structures. The City of San Diego has extensive real-time electrical metering on most of its buildings and PV systems, with interval data for overall consumption and PV electrical production available for multiple years. This paper uses 2007 PV-system data from two city facilities to illustrate the impacts of binomial rate designs. The analysis will determine the energy and demand savings that the PV systems are achieving relative to the absence of systems. A financial analysis of PV-system performance under various rate structures is presented. The data revealed that actual demand and energy use benefits of binomial tariffs increase in summer months, when solar resources allow for maximized electricity production. In a binomial tariff system, varying on- and semi-peak times can result in approximately 1 ,100 USD change in demand charges per month over not having a PV system in place, an approximate 30% cost savings. The PV systems are also shown to have a 30%-50% reduction in facility energy charges in 2007. |
| Bibliography |
Includes bibliographical references (p. 7). |
| Funding |
DE-AC36-99-GO10337 6700.1040. |
| Subject |
Electric utilities -- Rates -- Time-of-use pricing -- United States.
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Distributed resources (Electric utilities)
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Photovoltaic power generation -- Economic aspects -- California -- San Diego.
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| Added Author |
National Renewable Energy Laboratory (U.S.)
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| Added Title |
Impact of binomial rate structures on real photovoltaic systems |
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP-670-42923 |
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