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MD directory

Generator installation in Maryland

MD · 168 researched · 129 dedicated pages

168 standby generator installers with website signal in Maryland, whatever brand they carry. Sorted by generator-specific review count, then website signal.

168
Researched
129
Dedicated pages
15
Repeated signal
State market notes

Installer landscape

Maryland (Mid-Atlantic) is a mixed standby market. Fuel mix is split: utility gas 42.9%, electric 45.4%, propane 3.7% (ACS 2024). Metro jobs often look like natural-gas installs; rural counties more often need propane. In 2024, Maryland electricity customers averaged 2.0 hours without power (well below the 10.2-hour U.S. average; EIA Electric Power Annual Table 11.3). Dominant drivers in this research pass: severe summer storms, coastal. This directory lists 174 researched installers with website generator signal (134 with a dedicated generator page, 15 with repeated signal, 25 with at least one clear mention). That is a solid market by national listing volume, ranking #22 of 50. Top city clusters in the directory: Frederick (12), Gaithersburg (8), Baltimore (8), Annapolis (5).

Fuel, codes, and cost context

Quotes diverge with fuel path: gas-line work in town, tank packages outside it. Compare itemized scopes, not headline brand prices. NEC edition trackers need a local confirm (research note: 2020 (Mike Holt) / 2023 (IAEI) - conflict). We do not publish fabricated statewide average install prices.

Before you call

Maryland NEC edition trackers conflicted as of August 2026 (2020 vs 2023). Confirm the edition with the Department of Labor and your county before citing section numbers. Licensing is state plus county. Use the 174 researched listings below as a starting point, not an endorsement. Verify licensing, insurance, references, and recent standby work yourself.

Fuel and outage figures sourced from ACS 2024 and EIA 2024; NEC and licensing notes verified as of 2026-08-07. Not legal advice. Confirm with your AHJ.

Search near your MD ZIP

If the state list is too broad, enter your ZIP and sort by distance.

Browse by metrowithin 75 miles

Each metro page lists installers with an office within 75 miles. Many shops travel for jobs, so the count includes nearby counties, not just city-limits addresses.

Baltimore156Annapolis158Salisbury46Frederick145Hagerstown117
Job type in MD

Narrow by whole-house / standby work or service and maintenance signal.

Whole-house 103Service 34
Brand signal in MD

State pages for installers whose websites mention a brand you already have in mind. Brand mention is not dealer certification.

Generac dealers & installers 76Kohler 17Cummins 7Briggs & Stratton 7

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All Maryland installers

Every installer we found in this view. Open a profile for website signal, reviews, and contact paths.

Straight answers

Common questions

How many generator installers are in Maryland?
168 installers show standby generator signal on their websites across 86 cities in Maryland. Of those, 129 have a dedicated generator page, 15 have repeated signal, and 24 have at least one mention worth checking.
What cities have the most installers in Maryland?
Frederick (12), Gaithersburg (8), Baltimore (8), Annapolis (5), Millersville (5).
What fuel should I expect for a standby generator in Maryland?
ACS 2024 heating fuel mix: utility gas 42.9%, propane 3.7%, electric 45.4%, fuel oil 5.8%. That mix predicts whether most installs tap a gas meter or need a propane tank. Confirm fuel path for your address.
How are these sorted?
Generator-specific review count first (after any featured rows), then website signal, then overall Google review count. Use the left filters to require 1+, 5+, or 10+ generator reviews.
Are these recommendations?
No. Independently researched listings, not endorsements. Use this as a starting point, then check licensing, references, and recent work before you sign.

Looking for first-call questions? Read questions to ask a generator installer. Signal labels mean dedicated generator page, repeated site signal, or generator signal found.