Utility / operator
NSTAR Electric Company
8,133 recorded solar installations interconnected by NSTAR Electric Company — mostly in Massachusetts.
Dataset updated . Sources: LBNL Tracking the Sun + permits + state programs + USGS/EIA utility-scale.
Installations interconnected
8,133
Total capacity
990.7 MW
DC nameplate
States
3
Median size
7.4 kW
Median $/W
$2.50/W
pre-incentive
Third-party owned
0%
lease / PPA
Growth
Installations by year
2006
1
2009
1
2010
60
2011
83
2012
285
2013
286
2014
629
2015
715
2016
412
2017
450
2018
475
2019
395
2020
362
2021
287
2022
377
2023
615
2024
1,028
2025
1,098
2026
87
Latest records
Most recent recorded installs
| Date | Location | Size | $/W | Segment |
|---|---|---|---|---|
| Feb 11, 2026 | Boston, MA | 6.2 kW | — | COM |
| Feb 11, 2026 | Boston, MA | 3.5 kW | — | COM |
| Feb 11, 2026 | Boston, MA | 6.2 kW | — | COM |
| Feb 11, 2026 | Boston, MA | 5.7 kW | — | COM · 🔋 |
| Feb 11, 2026 | Boston, MA | 5.7 kW | — | COM · 🔋 |
| Feb 11, 2026 | Boston, MA | 3.5 kW | — | COM |
| Feb 10, 2026 | Boston, MA | — | — | COM |
| Feb 10, 2026 | Boston, MA | 6.2 kW | — | COM |
| Feb 9, 2026 | Boston, MA | — | — | COM |
| Feb 9, 2026 | Boston, MA | 4.9 kW | — | COM |
See all 8,133 installations →searchable & filterable; export to CSV with a free account
Service geography
- Massachusetts
- 8,125
Frequently asked questions
How many solar installations has NSTAR Electric Company interconnected?
PanelCensus records 8,133 installations interconnected by NSTAR Electric Company, from Jan 1, 2006 to Feb 11, 2026, totalling 990.7 MW of capacity across 3 states. Coverage varies by state, so actual totals may be higher.
Where does NSTAR Electric Company operate?
Most recorded activity is in Massachusetts (8,125), Connecticut (7), New Hampshire (1).