Residential battery storage permits in Baltimore County, MD
61 residential battery storage permits issued by Baltimore County (electrical), Baltimore County (building), the 8 weeks ending Oct 17, 2026. Oct 17, 2026 is the latest issue date the source has published.
Quick answer. In the 8 weeks ending Oct 17, 2026, 61 residential battery storage permits were issued in Baltimore County, MD, according to public records from Baltimore County (electrical), Baltimore County (building). The busiest ZIP codes were 21234 (6 permits), 21117 (5 permits), 21208 (5 permits). The median declared value was $38,637 across 25 permits that list one. The latest permit date published is Oct 17, 2026.
What a battery storage permit means in Baltimore County
A residential battery storage permit means a home is adding a battery system, often alongside solar or a panel upgrade. For a storage or solar installer it shows where backup power is selling.
In Baltimore County, permits were issued on 30 different days in the window; the most recent were Oct 15, 2026, Oct 14, 2026, Oct 13, 2026. The busiest ZIPs were 21234 (6), 21117 (5), 21208 (5).
By residential battery storage permit count, Baltimore County ranks #11 of the 37 battery storage pages on this site and #1 of 3 in MD.
- Mail neighbors of each install.
- Pitch storage to nearby homes that pulled solar permits without a battery.
- See which installers lead storage permits in your ZIPs.
Other work on the same permits
Share of these 61 permits whose type or description also matches another trade. These are the follow-on and partner trades on Baltimore County jobs.
- electrical: 61 permits (100%)
- solar: 37 permits (61%)
- windows & doors: 14 permits (23%)
- HVAC: 1 permits (2%)
Weekly trend
Permits per 7-day period, ending Oct 17, 2026. n/c = not collected yet (before our pipeline started pulling this source). It is not zero. Striped bars are partly collected weeks.
Top permit types
| Permit type / subtype | Permits | Share |
|---|---|---|
| RESIDENTIAL ELECTRICAL | 36 | 59% |
| Residential New / Res. Permit - Solar Panel SFD | 21 | 34% |
| Residential New / Res. Permit - Solar Panel RURAL RESIDENTIAL SFD | 4 | 7% |
Busiest ZIP codes
| ZIP | Permits | Share | 8-wk avg / week |
|---|---|---|---|
| 21234 | 6 | 10% | 0.75 |
| 21117 | 5 | 8% | 0.62 |
| 21208 | 5 | 8% | 0.62 |
| 21236 | 4 | 7% | 0.50 |
| 21221 | 4 | 7% | 0.50 |
8-wk avg / week is the trailing 8-week weekly average we quote in coverage checks for that ZIP and trade. It counts every source in the ZIP and includes permits with unknown use, so it can be higher than this page's residential count.
System stated in the permit
| System | Permits | Share |
|---|---|---|
| with solar | 43 | 70% |
| backup / ESS | 42 | 69% |
| panel / service upgrade | 36 | 59% |
Parsed from the permit's own type and work text. A permit can state more than one; many state none.
Sample rows
Anonymized: street address, permit number and any names removed. Subscribers get the full row with address, permit number and source link.
| Issued | ZIP | Permit type | Scope | System | Declared value |
|---|---|---|---|---|---|
| 2026-10-15 | 21221 | Residential New / Res. Permit - Solar Panel SFD | solar + battery + electrical | with solar; panel / service upgrade; backup / ESS | $19,404 |
| 2026-10-06 | 21117 | RESIDENTIAL ELECTRICAL | solar + battery + electrical + windows/doors | with solar; panel / service upgrade; backup / ESS | n/a |
| 2026-09-28 | 21219 | Residential New / Res. Permit - Solar Panel SFD | solar + battery + electrical | with solar; panel / service upgrade; backup / ESS | $24,000 |
| 2026-09-23 | 21236 | Residential New / Res. Permit - Solar Panel SFD | solar + battery + electrical | with solar; panel / service upgrade; backup / ESS | $59,926 |
| 2026-09-17 | 21117 | RESIDENTIAL ELECTRICAL | battery + electrical | with solar | n/a |
| 2026-09-03 | 21120 | RESIDENTIAL ELECTRICAL | battery + electrical | not stated | n/a |
Source
- Baltimore County (building): Permit records on bcgisdata.baltimorecountymd.gov, published by Baltimore County (building). Source dataset. Collected window(s): Aug 22, 2026 – Oct 16, 2026. Last pulled Oct 18, 2026.
- Baltimore County (electrical): Permit records on bcgisdata.baltimorecountymd.gov, published by Baltimore County (electrical). Source dataset. Collected window(s): Aug 23, 2026 – Oct 17, 2026. Last pulled Oct 18, 2026.
Metric: Residential = the source marks the permit's use as residential (permits with commercial or unknown use are not counted). Battery Storage = the permit's type or work description matches the Curbside Signal battery storage rules. Counts exclude void or cancelled permits. Dates are the jurisdiction's permit issue date. Records are deduplicated on source and permit number. How we count. Part of the Baltimore-Columbia-Towson, MD metro: every trade × city page there.
The honest limit. A permit usually means the job is already sold. We say that up front. The value is what happens around it:
- Neighbor marketing around active jobs: same-age houses on the same street.
- Cross-trade follow-on demand: new roof → solar, gutters, insulation; remodel → HVAC, electrical, landscaping, pool; new build → pest, security, landscaping.
- Competitor intelligence: which contractors pull permits where (where the jurisdiction publishes it), and who to recruit as subs.
- Early-stage projects for commercial trades and GC subs.
Follow-on: Battery installs come with solar and panel work. A solar-only permit is a battery prospect.
Other trades in Baltimore County, MD
Residential permits in the same window, by trade.
Questions
How many residential battery storage permits were issued in Baltimore County, MD recently?
61 residential battery storage permits in the public records we pulled, the 8 weeks ending Oct 17, 2026. Source: Baltimore County (electrical), Baltimore County (building).
Which Baltimore County ZIP codes have the most battery storage permits?
21234 (6 permits), 21117 (5 permits), 21208 (5 permits), by residential battery storage permit count the 8 weeks ending Oct 17, 2026. 28 ZIP codes had at least one permit.
What is the median declared value of a residential battery storage permit in Baltimore County?
$38,637, across 25 permits that list a valuation. Declared values are what the applicant stated on the permit, not the contract price.
How do I get the Baltimore County battery storage permit list, and what does it cost?
Request a free sample for your ZIPs first. ZIP Pack is $29/mo for one trade and up to 5 ZIPs every Monday; Metro Feed is $99/mo for a whole metro and up to 3 trades, with daily alerts. Guarantee on every package: If a weekly file is late or missing, that month is free. If a month delivers under half the 8-week average permit count for your ZIPs and trade, the next month is free.
Baltimore County battery storage leads, every Monday
Send your trade and ZIP codes. We'll reply with a real sample from the public records we pull, or tell you plainly that we don't cover you yet.