PanelCensus

Utility / operator

MASSACHUSETTS BAY TRANS AUTHORITY

7,468 recorded solar installations interconnected by MASSACHUSETTS BAY TRANS AUTHORITY — mostly in Massachusetts.

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

Installations interconnected
7,468
Total capacity
167.1 MW
DC nameplate
States
1
Median size
7.3 kW
Median $/W
$2.61/W
pre-incentive
Third-party owned
0%
lease / PPA

Growth

Installations by year

1998
1
2003
2
2004
6
2006
1
2007
5
2008
6
2009
17
2010
5
2011
25
2012
93
2013
130
2014
308
2015
467
2016
391
2017
341
2018
341
2019
358
2020
306
2021
245
2022
267
2023
243
2024
188
2025
152
2026
8

Latest records

Most recent recorded installs

DateLocationSize$/WSegment
Jan 29, 2026Cambridge, MA10.1 kW$3.55/WCOM
Jan 28, 2026Cambridge, MA5.2 kW$7.24/WCOM
Jan 23, 2026Cambridge, MA9.2 kW$4.45/WCOM
Jan 20, 2026Cambridge, MA4.9 kW$17.59/WCOM · 🔋
Jan 14, 2026Cambridge, MA——COM · 🔋
Jan 13, 2026Cambridge, MA8.8 kW$3.96/WCOM
Jan 5, 2026Cambridge, MA5.4 kW$3.56/WCOM
Jan 5, 2026Cambridge, MA6 kW$6.45/WCOM
Dec 29, 2025Cambridge, MA4.5 kW$17.44/WCOM · 🔋
Dec 29, 2025Cambridge, MA12.8 kW$3.75/WCOM

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Service geography

Frequently asked questions

How many solar installations has MASSACHUSETTS BAY TRANS AUTHORITY interconnected?

PanelCensus records 7,468 installations interconnected by MASSACHUSETTS BAY TRANS AUTHORITY, from Dec 31, 1998 to Jan 29, 2026, totalling 167.1 MW of capacity across 1 state. Coverage varies by state, so actual totals may be higher.

Where does MASSACHUSETTS BAY TRANS AUTHORITY operate?

Most recorded activity is in Massachusetts (7,468).