Photovoltaic energy valuation model

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Source: Sandia National Laboratories.

Photovoltaic Energy Valuation Model

Sandia National Laboratories in collaboration with Solar Power Electric™ has developed PV ValueTM, an electronic form to standardize appraisals of homes and businesses outfitted with photovoltaic (PV) installations. While the tool is licensed for solar PV installations, it could be used for other features in a home that generate income, such as wind turbines. The spreadsheet, user manual and webinar explaining the tool are available for download at

The tool has been designed to be used by real estate appraisers, mortgage underwriters, credit analysts, real property assessors, insurance claims adjusters and PV industry sales staff. For appraisers, the inputs specific to PV in the Residential Green and Energy Efficient Addendum can be used as inputs to PV Value™. Valuing a PV system is done using an income capitalization approach that considers the present value of projected future energy production along with estimated operating and maintenance costs that are anticipated to occur during the PV module power production warranty timeframe.

This tool was created with Microsoft Excel® 2007, and works with both Excel® 2007 and 2010. Use of this spreadsheet requires activating macros, ActiveX controls and data connections. A detailed user manual accompanies this tool and can be found in the download area below. Sandia Labs hosted a webinar describing PV Value™ on December 7, 2011..Updates may be made as necessary, with a new version released on or before September 1, 2012. The current version is 1.0.

Please contact Geoff Klise at Sandia National Laboratories with questions or comments related to PV Value™. He can be reached at: .


Sandia National Laboratories (2012). Photovoltaic energy valuation model. Retrieved from