PanelCensus

Mark Weissflog

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Solar installer based in Massachusetts · installer record #46616 resolved from 11 public installation records.

At a glance

Mark Weissflog is a solar installer with 11 recorded installations totalling 453 kW, dated 2012 to 2025. All of its records are in Massachusetts, where it ranks 301st of 463 profiled installers by volume and 7,197th of 10,536 nationally.

Recorded installs
11
Total capacity
453 kW
DC nameplate
Median system
50.4 kW
Median price
—
pre-incentive
Third-party owned
0%
lease / PPA
Battery attach
18%
First recorded
2012
Last recorded
2025

Track record

Install volume by year

2012
1
2018
1
2021
2
2022
5
2023
1
2025
1

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

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Jul 3, 2025Boston, MA70.2 kW—— · battery
Jun 7, 2023Boston, MA7.6 kW—— · battery
Aug 30, 2022Boston, MA———
Aug 30, 2022Boston, MA———
Aug 30, 2022Boston, MA———
Mar 22, 2022Boston, MA100 kW——
Feb 10, 2022Boston, MA147 kW——
May 25, 2021Boston, MA50.4 kW——
May 25, 2021Boston, MA50.4 kW——
May 25, 2018Boston, MA———

See all 11 installations →searchable & filterable; export to CSV with a free account

Service geography

Massachusetts
11

Busiest cities

Boston, MA 11

Record

Installer ID
PC-46616
First recorded install
Apr 30, 2012
Last recorded install
Jul 3, 2025
Priced records
0
Also appears as
MARK WEISSFLOG

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How does Mark Weissflog compare with other installers in Massachusetts?

By recorded installations Mark Weissflog ranks 301st among the 463 installers based in Massachusetts with five or more records. Its median system, 50.4 kW, is about 6.7 times the state median of 7.5 kW. 0% of its recorded installations are third-party owned (lease or power-purchase agreement), against 47% across Massachusetts. 18% include battery storage, compared with 4% of Massachusetts records. Installers of similar recorded volume in Massachusetts include Solnetic Solar (11), David LeGendre (11) and James Reilly (11).

How has Mark Weissflog's installation volume changed?

Mark Weissflog's earliest dated installation on record is from 2012. It has recorded installations in 6 calendar years. The busiest year was 2022, with 5 installations. 2025, its latest year with records, has 1. The most recent recorded installation is dated Jul 3, 2025.

Where does Mark Weissflog install solar?

All recorded installations are in Massachusetts. The cities with the most of its installations are Boston, MA (11).

Frequently asked questions

How many solar installations has Mark Weissflog completed?

PanelCensus records 11 installations by Mark Weissflog, from Apr 30, 2012 to Jul 3, 2025, totalling 453 kW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Mark Weissflog charge for solar?

The recorded systems for Mark Weissflog do not include enough price data to compute a reliable median.

Where does Mark Weissflog install solar?

All 11 recorded installations are in Massachusetts, the most of them in Boston.

Is Mark Weissflog still installing solar?

The most recent installation attributed to Mark Weissflog in the public records is dated Jul 3, 2025; 2025 has 1 recorded installation. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.

Does Mark Weissflog install leased or PPA solar systems?

0 recorded installations by Mark Weissflog (0%) are third-party owned — a lease or power-purchase agreement; across Massachusetts the share is 47%.

Does Mark Weissflog install battery storage?

2 recorded installations by Mark Weissflog (18%) include a battery.

Related installers and places

Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.

About this data

Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published July 9, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.

Cite as: PanelCensus, “Mark Weissflog, solar installer (Massachusetts)”, https://panelcensus.com/installers/massachusetts/mark-weissflog-46616 (data as of July 9, 2026).