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Solar Data Summarized to 2010 Parcels

solar_mapWith the release of the Local Roll to the public (see this data entry) we are now able to release the dataset that supports the LA County Solar Map (http://solarmap.lacounty.gov).

The Solar Map Database contains the results of the 2006 solar model (for details see this data portal entry), summarized to show rooftop potential for every property in the County.

The solar model itself is from 2006, while the parcel boundaries in this file are from 2010.


Important Note.  The shapefile includes 4 fields that are summaries of the solar potential:

  1. Rank 1 – Square feet of roof receiving excellent solar input (> 1.4 million wattHours per square meter)
  2. Rank 2 – square feet of roof receiving good solar input (1.15 – 1.4 million wH/meter squared)
  3. Rank 3 - square feet of roof receiving poor solar input (950,000 – 1.15 million wH/meter squared)
  4. Rank 4 - square feet of roof receiving negligible solar input (< 950,000 million wH/meter squared)

In the Excel files, we add Rank1 and Rank2 square footage to get the optimal roof area.

How did we determine these ranks?  Download our payback calculations


solar_formatThe download file organized into 4 folders (see image on right):

  1. Access – an Access database
  2. excel – Excel files – one for each city
  3. Samples – a couple of sample files
  4. shapes – the GIS shapefiles of the database


Using GIS Data on this site

GIS Data downloaded from this site generally requires GIS software to view. Click here for a list of GIS Data Viewers

GIS data available on this website is provided AS IS - please read the GIS Data Portal Terms of Use

Data Field Descriptions

See above

GIS Source Information
Database Name: eGIS_Environmental
Feature Class Name: SOLAR_PARCELS_2010
Feature Dataset Name (if applicable):
Reference Date: 2006, 2010
Accuracy: Parcel
Update Frequency: Other
Access Constraints:None

Contact Information
Steve Steinberg
Geographic Information Officer
County of Los Angeles
Internal Services Department
9150 E. Imperial Hwy, MS#3
33.916650, -118.132255
Downey, CA 90242
(562) 392-7126

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