Energy Monster

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Solar installer based in Massachusetts · active in 2 states · installer record #4310 resolved from 277 public installation records.

Recorded installs

277

Total capacity

2.8 MW

DC nameplate

Median system

8.6 kW

≈ $27,600

Median price

$3.10/W

pre-incentive

Third-party owned

lease / PPA

Battery attach

First recorded

2015

Last recorded

2023

Track record

Install volume by year

2015

1$4.28/W

2016

5$3.81/W

2017

5$4.14/W

2018

38$3.33/W

2019

79$3.14/W

2020

72$3.11/W

2021

38$2.91/W

2022

27$2.99/W

2023

12$3.04/W

Bars: recorded installs · right column: this installer's median $/W that year.

Latest records

Most recent recorded installs

Date	Location	Size	Price	Ownership
Sep 21, 2023	Brookline, MA	6.1 kW	$41,833	Host-owned
May 22, 2023	Lexington, MA	10 kW	$30,216	Host-owned
Apr 21, 2023	Cambridge, MA	13.6 kW	$39,476	Host-owned
Apr 20, 2023	Hopkinton, MA	8.7 kW	$25,298	Host-owned
Apr 20, 2023	Hopkinton, MA	8.7 kW	$25,298	Host-owned
Mar 23, 2023	Ashland, MA	13.6 kW	$42,875	Host-owned
Mar 2, 2023	Hopkinton, MA	8.3 kW	$24,185	Host-owned
Mar 2, 2023	Hopkinton, MA	9.1 kW	$27,814	Host-owned
Mar 1, 2023	Hopkinton, MA	9.1 kW	$26,471	Host-owned
Feb 2, 2023	Westwood, MA	9.2 kW	$28,397	Host-owned

Service geography

Massachusetts: 276
New Hampshire: 1

Busiest cities

Acton, MA 22Worcester, MA 20Hopkinton, MA 15Holliston, MA 14Lexington, MA 11Arlington, MA 9Sudbury, MA 6Newton, MA 6

Record

Installer ID: PC-4310
First recorded install: Oct 22, 2015
Last recorded install: Sep 21, 2023
Priced records: 277

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Frequently asked questions

How many solar installations has Energy Monster completed?

The Tracking the Sun dataset records 277 installations by Energy Monster, from Oct 22, 2015 to Sep 21, 2023, totalling 2.8 MW of capacity. Dataset coverage varies by state, so actual totals may be higher.

What does Energy Monster charge for solar?

The median installed price across 277 priced systems is $3.10/W pre-incentive (median system 8.6 kW, ≈ $27,600). Third-party-owned (lease/PPA) share: 1%.

Where does Energy Monster install solar?

Recorded installs span 2 states, led by Massachusetts (276), New Hampshire (1).

Dataset updated July 2026 . Source: LBNL Tracking the Sun public dataset; installer resolved by exact-normalized name matching.