Analysis of Electricity Rates Structures for Residential and Commercial Projects, April 2014

The Analysis of Electricity Rates Structures for Residential and Commercial Projects webinar was presented on April 16, 2014 by Paul Gilman. It describes the basics of how to model retail electricity rate structures in SAM, and more advanced topics like how to work with the OpenEI Utility Rate Database (URDB), and how to use the SamUL scripting language to download building load data and calculate the value of energy and compare different rate structures in a single SAM Case.

UPDATE JUNE 1, 2017: THIS WEBINAR IS FOR AN OLDER VERSION OF SAM. THIS WEBINAR ON ELECTRICITY RATES IN SAM 2017.1.17 IS MORE UP TO DATE.

Presentation slides (PDF 762 KB)

The following SAM files (.zsam) are copies of the files we used for the demonstrations:

  • SAM Demonstration I: Basic flat rates (ZSAM 181 KB)
  • SAM Demonstration II: Compare flat rates to net metering (ZSAM 348 KB)
  • SAM Demonstration IV: SamUL scripts to download building load data and calculate value of PV (ZSAM 125 KB)

And, here is a modified version of the SAM Demonstration IV file that calculates annual costs and savings for a project with different utility rates for the with and without system scenarios: ZSAM 123 KB. (The demonstration file and SamUL sample file only show Year 1 values, but this file shows the values for each year in the project cash flow.)

The NREL report describing analysis using SAM and the PV value method described during the webinar:

Ong, S.; Campbell, C.; Clark, N. (2012). “Impacts of Regional Electricity Prices and Building Type on the Economics of Commercial Photovoltaic Systems.” NREL/TP-6A20-56461. Golden, CO: National Renewable Energy Laboratory. (PDF 1.8 MB)

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