Solar permits · Maryland

Where Maryland is going solar, permit by permit.

Service upgrades, EV chargers, and heat pump installs are the clearest electrification signals in any county. Tradewinds observes them in county permit records, tied to the property behind each filing.

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Four permit signals that precede a solar install.

200A service upgrades

A panel upgrade is the physical prerequisite for solar, storage, and EV charging. It is filed months before the install it enables.

🔌

EV charger circuits

A dedicated charger circuit marks a household already spending on electrification, with the panel headroom to add more.

🌡️

Heat pump conversions

Swapping a fossil system for a heat pump raises electric load, which is the argument for generation and storage on the same roof.

☀️

The solar filing itself

The array permit names the installer and the system size, which is the competitive picture for the county in one record.

27793
solar permits observed in Maryland, since January 2019

By county

Baltimore 9894
Howard 7220
Frederick 3140
Carroll 3093
Baltimore City 2481
Anne Arundel 1647
Prince George's 318

By year

2019 160
2020 163
2021 1294
2022 3838
2023 3975
2024 4317
2025 7951
2026 6095
Contractors on record, by county

Every firm below filed permits we observed in that county. Counts are what we hold, so they reflect our coverage as much as the work happening there.

All Maryland solar contractors

Other trades in Maryland

Solar in other states

See last week's activity, free

Every Monday we publish last week's solar permits for every county we cover. Browse this week's activity.

Working in Maryland?

Tell us your territory and we will bring the data to the first call. See the counties and trades we cover on the coverage page, or the firms doing this work in the contractor registry.

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Built from county permit filings. Not every filing names a trade cleanly, and counties differ in what they publish, so these counts reflect our coverage as much as the work happening on the ground.