Community Characteristics Affecting Demand For Residential Solar Permitting Reform

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Authorities Having Jurisdiction (AHJs)

All layers in the web map are aggregated at the AHJ level (with the exception of the utility service area layer). AHJs represent cities and counties with the authority to adopt laws that govern or influence land use. The AHJ boundaries were defined by identifying jurisdictions with permitting authority from the U.S Census Building Permit Survey and combining features from TIGER/Line “Place” and “County” shapefiles.

United States Census Bureau, Geography Division. TIGER/Line 2016: Place. Retrieved from Census.gov on January 31, 2018.

United States Census Bureau, Geography Division. TIGER/Line 2016: County. Retrieved from Census.gov on January 31, 2018.

United States Census Bureau, Residential Construction Branch. Building Permit Survey: Place. U.S Census Bureau. Retrieved from https://www2.census.gov/econ/bps/Place/ on April 19, 2019.

Legislation

Assembly Bill 2188 Adoption Status

This layer classifies whether an AHJ has adopted an administrative ordinance that addresses Assembly Bill 2188 (2014). This bill amends the Civil and Government code sections of the Solar Rights Act and requires the adoption of an ordinance that streamlines the permitting process for small rooftop solar system installations in California.

Assembly Bill 2188 (2013-2014), Chapter 521, (Cal. Stat. 2014). Retrieved from https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=201320140AB2188

Solar Characteristics

Average Global Horizontal Irradiance

This layer represents the average annual Global Horizontal Irradiance.

National Renewable Energy Laboratory (NREL). (1998-2016) Multi-Year PSM Global Horizontal Irradiance: Average Annual GHI Grid. Retrieved from https://maps.nrel.gov/nsrdb-viewer/ on April 15, 2019.

Solar PV Installers

This layer displays the number of unique solar PV installers active between 2010 and 2015. Self-installers were excluded from the count.

Lawrence Berkeley National Lab (LBNL). (2017) Tracking the Sun Public Data File. Retrieved from https://openpv.nrel.gov/search on June 4, 2018.

Solar PV Installations

This layer displays the number of residential solar PV systems 10 kW or smaller installed between 2010 and 2015.

Lawrence Berkeley National Lab (LBNL). (2017) Tracking the Sun Public Data File. Retrieved from https://emp.lbl.gov/tracking-the-sun on September 14, 2018.

Building Suitability for Rooftop Solar PV

This layer displays the percentage of small buildings with suitable rooftops for solar PV systems. Small building suitability for rooftop solar is calculated based on the tilt, orientation, and shading of a rooftop.

National Renewable Energy Laboratory / PV Rooftop LiDAR project. (2015) PV Rooftop Estimated National Small Building Suitability. Retrieved from https://maps.nrel.gov/nsrdb-viewer/ on February 26, 2018.

Utilities

Electric Utility Service Areas

This layer describes service areas for electric utilities by ownership type.

California Energy Commission. (2015). California Electric Utility Service Areas Map. Retrieved from http://www.energy.ca.gov/maps/serviceareas/Electric_Utility_Service_Areas.html on December 13, 2017.

Homeland Infrastructure Foundation-Level Data (HIFLD). (2017). Electric Retail Service Territories. Retrieved from https://hifld-geoplatform.opendata.arcgis.com/datasets/c4fd0b01c2544a2f83440dab292f0980_0 on May 1, 2018.

Demographics

Population
This layer displays the estimated total population of each AHJ in 2016.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B01003. Generated March 27, 2019 using American FactFinder.

Population Density
Population density was calculated by dividing 2016 total population estimates by the land area for each AHJ.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B01003. Generated March 27, 2019 using American FactFinder.

Median Household Income
This layer displays the median household income for2016. Income estimates are calculated using 2016 inflation adjusted dollars.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B19013. Generated March 27, 2019 using American FactFinder.

Educational Attainment
This layer displays the percentage of the 25 year or older population with a Bachelor's degree or higher.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B15003. Generated March 27, 2019 using American FactFinder.

Unemployment Rate
This layer shows the unemployment rate in 2016.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B23025. Generated March 27, 2019 using American FactFinder.

Median Age
This layer illustrates the estimated median age of the population in 2016.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B01002. Generated March 27, 2019 using American FactFinder.

Median Home Value
This layer shows the estimated median home value of population in 2016. Home value estimates are calculated using 2016 inflation adjusted dollars.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B25077. Generated March 27, 2019 using American FactFinder.

Median Housing Construction Year
This layer represents the estimated median year of construction for structures in 2016.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B25035. Generated March 27, 2019 using American FactFinder.

Percent Single-Family Housing (1 unit)
This layer shows the percentage of total housing units that are single-family homes (i.e., one-unit buildings) in 2016.

United States Census Bureau. American Community Survey, 2012-2016 5-Year Estimates, Table B25024. Generated March 27, 2019 using American FactFinder.