PanelCensus

Solar installations in District of Columbia

29,665 recorded installations — prices, growth by year, county breakdown and the installers doing the work.

Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.

Installations
29,665
Total capacity
517.7 MW
Median price
pre-incentive
Third-party owned
19%
lease / PPA

Most active

Top installers in District of Columbia

Growth

Installations by year

2005
1
2006
2
2007
3
2008
5
2009
94
2010
173
2011
185
2012
209
2013
312
2014
361
2015
1,054
2016
1,265
2017
1,181
2018
1,799
2019
2,897
2020
3,721
2021
3,348
2022
2,576
2023
2,837
2024
3,493
2025
3,899
2026
250

Bars: recorded installs · right column: median $/W that year.

By county

Solar by county in District of Columbia

CountyInstallsCapacityMedian $/W
District of Columbia29,629504.1 MW

Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties with fewer than 50 recorded installs are shown but not indexed.

Frequently asked questions

How many solar installations are there in District of Columbia?

PanelCensus records 29,665 solar installations in District of Columbia, totalling 517.7 MW of capacity — compiled from LBNL's Tracking the Sun, city permit records, state programs and USGS/EIA utility-scale data. (Coverage depends on what the state publishes, so actual totals are higher.)

How much does solar cost per watt in District of Columbia?

The District of Columbia records in the dataset do not include enough price data to compute a reliable median.

Who are the biggest solar installers in District of Columbia?

NULL NULL; MATTHEW YOUNG has the most recorded installations in District of Columbia (1,084), followed by NICK HAYES (841).