Generator installation cost in Maryland
In Maryland, you pay about $11,369 to $16,469 installed for a 22 kW whole house generator using natural gas. Here, electricians earn $36.28 an hour, 6% higher than the US average of $34.37. That hourly rate is what sets the electrician line, between $3,200 and $5,800.
Not sure if 22 kW is right for your house? Work out your house size in three questions.
Maryland installed cost by size
Fuel at half load, at Maryland prices. Generac provides a fuel table for each model. Units of 18 kW, 24 kW and 26 kW are rated to use no more fuel each hour than the unit one size below. Hourly fuel use therefore doesn't increase at the same rate as kW.
| Size | Natural gas, installed | Gas at half load | Propane, installed | Propane at half load | Fuel figures |
|---|---|---|---|---|---|
| 10 kW | $8,619 to $13,719 | $2.15/h | $8,919 to $14,219 | $3.74/h | Generac Guardian 10 kW |
| 14 kW | $9,949 to $15,049 | $4.15/h | $10,249 to $15,549 | $6.98/h | Generac Guardian 14 kW |
| 18 kW | $10,769 to $15,869 | $3.60/h | $11,069 to $16,369 | $6.56/h | Generac Guardian 18 kW |
| 22 kW | $11,369 to $16,469 | $4.35/h | $11,669 to $16,969 | $9.76/h | Generac Guardian 22 kW |
| 24 kW | $11,789 to $16,889 | $4.32/h | $12,089 to $17,389 | $9.76/h | Generac Guardian 24 kW |
| 26 kW | $12,219 to $17,319 | $4.00/h | $12,519 to $17,819 | $7.95/h | Generac Guardian 26 kW |
What makes up the 22 kW price in Maryland
Maryland electricians rank 16th of 51 at $36.28 hourly. As a result, labor can cost as much as $300 more than it does at US average pay.
| Line, 22 kW | Natural gas | Propane | Basis |
|---|---|---|---|
| Generator | $6,309 | $6,309 | Generac's list price for the 22 kW bundle, minus the switch |
| Transfer switch | $1,060 | $1,060 | Difference between Generac's prices with and without the switch |
| Electrician: switch, wiring, start-up | $3,200 to $5,800 | $3,200 to $5,800 | published install ranges, adjusted to the Maryland hourly wage, $36.28 (BLS) |
| Fuel line | $500 to $2,100 | $800 to $2,600 | from the meter for gas; from the tank for propane |
| Pad and permit | $300 to $1,200 | $300 to $1,200 | composite pad or slab, local fees |
| Installed | $11,369 to $16,469 | $11,669 to $16,969 | propane leaves out the tank |
Maryland fuel costs
| Fuel | Price | 22 kW an hour | Three days |
|---|---|---|---|
| Natural gas | $21.30 per 1,000 ft³ | $4.35 | $313 |
| Propane | $3.86 a gallon | $9.76 | $703 (182 gal) |
Gas costs less in Maryland. A 22 kW generator at half load uses $4.35 an hour on gas, compared with $9.76 on propane. Here, residential gas ranks 26th cheapest of 51.
| Propane tank | Usable at 80% | 22 kW at half load | Fill at Maryland price |
|---|---|---|---|
| 250 gal | 200 gal | 79 h | $772 |
| 500 gal | 400 gal | 158 h | $1,544 |
Power outages in Maryland
Maryland customers averaged 178 minutes without power in 2025. That's below the US figure of 269 and ranks 39th highest of 51. Major storms caused 56% of the power loss. On ordinary days, customers lost power for 79 minutes. The highest figure in the past ten years was 330 minutes in 2018. The average for that period was 166 minutes, so the 2025 total was 12 minutes higher.
Since 2016, every year
| Year | Minutes out, all events | Rank of 51 states | Without major storms |
|---|---|---|---|
| 2025 | 178 | 39th | 79 |
| 2024 | 118 | 43rd | 75 |
| 2023 | 166 | 33rd | 67 |
| 2022 | 260 | 25th | 84 |
| 2021 | 128 | 39th | 80 |
| 2020 | 114 | 46th | 76 |
| 2019 | 144 | 42nd | 89 |
| 2018 | 330 | 19th | 94 |
| 2017 | 103 | 46th | 82 |
| 2016 | 121 | 45th | 105 |
Maryland utilities and their 2025 outages
| Utility | Customers | Minutes out | Outages each | Minutes per outage |
|---|---|---|---|---|
| Baltimore Gas & Electric Co | 1,345,150 | 175 | 0.87 | 201 |
| Potomac Electric Power Co | 604,786 | 104 | 0.74 | 140 |
| The Potomac Edison Company | 288,257 | 399 | 1.30 | 307 |
| Delmarva Power | 215,634 | 114 | 0.93 | 123 |
| Southern Maryland Elec Coop Inc | 180,658 | 173 | 1.56 | 111 |
In 2025, The Potomac Edison Company's customers had no power for 399 minutes, while customers of Potomac Electric Power Co had 104 minutes. At 3.8 to one, the utility serving your street matters more than the statewide figure of 178 minutes. Customers across all utilities averaged 0.96 power losses during the year, weighted by customer count. That's less often than the 1.35 reported across the US. Customers of Baltimore Gas & Electric Co averaged 201 minutes without power per outage, about 3.4 hours, or $14.58 in gas at half load for a 22 kW.
Major disasters declared by FEMA in Maryland since 2016
Declared major disasters total 5: 1 hurricane, 2 floods, 1 severe storm and 1 snowstorm. The latest declaration dates to February 2021, and COVID-19 is not counted. Tropical or coastal storms account for 1 of the 5, the latest being Tropical Storm Isaias in February 2021. Outages like those run for days. 1 of them was a winter or ice storm. With a cold-weather kit, the engine keeps starting.
Howard County (3), Baltimore County (2), Calvert County (2), Frederick County (2) and Washington County (2) were named in the most of them.
| Declared | Disaster | FEMA number |
|---|---|---|
| February 2021 | Tropical Storm Isaias | DR-4583 |
| July 2018 | Severe Storm and Flooding | DR-4376 |
| June 2018 | Severe Storms and Flooding | DR-4374 |
| September 2016 | Severe Storm and Flooding | DR-4279 |
| March 2016 | Severe Winter Storm and Snowstorm | DR-4261 |
Maryland and its neighboring jurisdictions
| State | 22 kW on gas, installed | Wage | Minutes out |
|---|---|---|---|
| Maryland | $11,369 to $16,469 | $36.28 | 178 |
| District of Columbia | $11,969 to $17,869 | $42.72 | 50 |
| Delaware | $11,169 to $15,969 | $34.02 | 104 |
| Pennsylvania | $11,369 to $16,469 | $36.43 | 413 |
| Virginia | $10,969 to $15,669 | $32.62 | 763 |
| West Virginia | $10,969 to $15,669 | $32.61 | 1,013 |
Installation costs are lower for 3 of 5 neighbors. Virginia and West Virginia come in lowest at $10,969, and District of Columbia is highest at $11,969. Outages vary more than price does: West Virginia logged 1,013 minutes of outages in 2025, against 178 here.
Sources: BLS wage data (May 2025), EIA gas data (March to August 2026), EIA propane data (October 26, 2026), EIA outage data, EIA-861, FEMA. All states.