Utility / operator
POTOMAC ELECTRIC POWER CO
14,065 recorded solar installations interconnected by POTOMAC ELECTRIC POWER CO — mostly in District of Columbia.
Dataset updated . Sources: LBNL Tracking the Sun + permits + state programs + USGS/EIA utility-scale.
Installations interconnected
14,065
Total capacity
238.6 MW
DC nameplate
States
2
Median size
7.6 kW
Median $/W
$5.31/W
pre-incentive
Third-party owned
0%
lease / PPA
Growth
Installations by year
2000
1
2006
2
2007
1
2008
1
2009
4
2010
6
2011
7
2012
9
2013
10
2014
6
2015
435
2016
482
2017
482
2018
895
2019
913
2020
1,136
2021
787
2022
704
2023
1,396
2024
3,077
2025
3,466
2026
209
Latest records
Most recent recorded installs
| Date | Location | Size | $/W | Segment |
|---|---|---|---|---|
| Feb 11, 2026 | Washington, DC | — | — | COM |
| Feb 11, 2026 | Washington, DC | — | — | COM |
| Feb 11, 2026 | Washington, DC | 6.8 kW | — | COM |
| Feb 11, 2026 | Washington, DC | 62.5 kW | — | COM |
| Feb 11, 2026 | Washington, DC | 3.2 kW | — | COM |
| Feb 11, 2026 | Washington, DC | 5.3 kW | — | COM |
| Feb 11, 2026 | Washington, DC | — | — | COM |
| Feb 11, 2026 | Washington, DC | 9.9 kW | — | COM |
| Feb 10, 2026 | Washington, DC | 7.9 kW | — | COM |
| Feb 10, 2026 | Washington, DC | — | — | COM |
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Service geography
- District of Columbia
- 13,758
- Maryland
- 307
Frequently asked questions
How many solar installations has POTOMAC ELECTRIC POWER CO interconnected?
PanelCensus records 14,065 installations interconnected by POTOMAC ELECTRIC POWER CO, from Dec 29, 2000 to Feb 11, 2026, totalling 238.6 MW of capacity across 2 states. Coverage varies by state, so actual totals may be higher.
Where does POTOMAC ELECTRIC POWER CO operate?
Most recorded activity is in District of Columbia (13,758), Maryland (307).