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The Distributed Generation Market Demand (dGen) model is a geospatially rich, bottom-up, market-penetration model that simulates the potential adoption of distributed energy resources (DERs) for residential, commercial, and industrial entities in the continental United States through 2050. The dGen model builds on and provides significant advances over NREL's deprecated Solar Deployment System (SolarDS) model.

The dGen model can help develop deployment forecasts for distributed resources, including sensitivity to market and policy changes such as retail electricity rate structures, net energy metering, and technology costs. The model can be employed at a wide range of spatial-temporal scales, it can a be linked with NREL's Regional Energy Deployment System (ReEDS) model to analyze DER impacts on the bulk power system. Alternatively, dGen can be applied at a fine spatial resolution to predict adoption potential at the distribution feeder level.

Learn more about dGen:


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Results shown here are based on model runs completed in December 2015 and assumptions are further documented in Gagnon and Sigrin (2016).

Contact us to learn more about the dGen model. Please note that the dGen model is not currently available for download.

NREL's Energy Analysis activities support the U.S. Department of Energy's Office of Energy Efficiency & Renewable Energy.

A map of the continental United States showing the range of residential sector annual average electric rates by county
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Costs of energy are a strong predictor of DER adoption.
Figure 2. A map of the Newark, New Jersey, showing the building footprint of that area.
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The dGen model uses multiple sources of data to assess regional technical and economic potential. Shown here is a visualization of coverage of rooftop availability based on LiDAR scans.