Power Station Recharge Cost Index
What does it cost to refill a portable power station from the grid? We applied the same charging-efficiency assumption to current EIA residential electricity prices so the answer can be compared consistently across every state and the District of Columbia.
Source: U.S. Energy Information Administration, Electric Power Monthly Table 5.6.B, year-to-date through June 2026. Released August 26, 2026.
18.16¢/kWh
At 90% charging efficiency, a full nominal 1 kWh refill is about $0.20; 4 kWh is about $0.81.
Hawaii
45.95¢/kWh. A nominal 4 kWh refill is about $2.04 under the same assumption.
North Dakota
12.19¢/kWh. A nominal 4 kWh refill is about $0.54.
How much a 4 kWh refill changes by state
Selected state estimates use the same 90% charging-efficiency assumption and include attribution for editorial reuse.
Estimated cost of a full grid recharge
All estimates use the same 90% charging-efficiency assumption so the state electricity rate is the only variable changing across rows.
| State | Residential rate | 500Wh | 1,000Wh | 2,000Wh | 4,000Wh |
|---|---|---|---|---|---|
| Hawaii | 45.95¢/kWh | $0.26 | $0.51 | $1.02 | $2.04 |
| California | 33.17¢/kWh | $0.18 | $0.37 | $0.74 | $1.47 |
| Massachusetts | 30.06¢/kWh | $0.17 | $0.33 | $0.67 | $1.34 |
| Maine | 29.67¢/kWh | $0.16 | $0.33 | $0.66 | $1.32 |
| Rhode Island | 29.45¢/kWh | $0.16 | $0.33 | $0.65 | $1.31 |
| New York | 29.26¢/kWh | $0.16 | $0.33 | $0.65 | $1.30 |
| Connecticut | 28.82¢/kWh | $0.16 | $0.32 | $0.64 | $1.28 |
| Alaska | 26.86¢/kWh | $0.15 | $0.30 | $0.60 | $1.19 |
| New Hampshire | 26.83¢/kWh | $0.15 | $0.30 | $0.60 | $1.19 |
| District of Columbia | 24.54¢/kWh | $0.14 | $0.27 | $0.55 | $1.09 |
| Vermont | 23.98¢/kWh | $0.13 | $0.27 | $0.53 | $1.07 |
| New Jersey | 23.65¢/kWh | $0.13 | $0.26 | $0.53 | $1.05 |
| Maryland | 21.27¢/kWh | $0.12 | $0.24 | $0.47 | $0.95 |
| Michigan | 21.14¢/kWh | $0.12 | $0.23 | $0.47 | $0.94 |
| Pennsylvania | 20.90¢/kWh | $0.12 | $0.23 | $0.46 | $0.93 |
| Illinois | 19.22¢/kWh | $0.11 | $0.21 | $0.43 | $0.85 |
| Wisconsin | 18.99¢/kWh | $0.11 | $0.21 | $0.42 | $0.84 |
| Ohio | 18.53¢/kWh | $0.10 | $0.21 | $0.41 | $0.82 |
| Delaware | 17.74¢/kWh | $0.10 | $0.20 | $0.39 | $0.79 |
| Indiana | 17.11¢/kWh | $0.10 | $0.19 | $0.38 | $0.76 |
| Virginia | 16.69¢/kWh | $0.09 | $0.19 | $0.37 | $0.74 |
| Colorado | 16.65¢/kWh | $0.09 | $0.18 | $0.37 | $0.74 |
| Alabama | 16.58¢/kWh | $0.09 | $0.18 | $0.37 | $0.74 |
| Texas | 16.11¢/kWh | $0.09 | $0.18 | $0.36 | $0.72 |
| South Carolina | 16.04¢/kWh | $0.09 | $0.18 | $0.36 | $0.71 |
| Minnesota | 15.98¢/kWh | $0.09 | $0.18 | $0.36 | $0.71 |
| Arizona | 15.45¢/kWh | $0.09 | $0.17 | $0.34 | $0.69 |
| West Virginia | 15.42¢/kWh | $0.09 | $0.17 | $0.34 | $0.69 |
| Florida | 15.36¢/kWh | $0.09 | $0.17 | $0.34 | $0.68 |
| Mississippi | 15.35¢/kWh | $0.09 | $0.17 | $0.34 | $0.68 |
| Oregon | 15.31¢/kWh | $0.09 | $0.17 | $0.34 | $0.68 |
| Kansas | 15.19¢/kWh | $0.08 | $0.17 | $0.34 | $0.68 |
| Georgia | 15.19¢/kWh | $0.08 | $0.17 | $0.34 | $0.68 |
| North Carolina | 14.90¢/kWh | $0.08 | $0.17 | $0.33 | $0.66 |
| New Mexico | 14.82¢/kWh | $0.08 | $0.16 | $0.33 | $0.66 |
| Kentucky | 14.37¢/kWh | $0.08 | $0.16 | $0.32 | $0.64 |
| Washington | 14.35¢/kWh | $0.08 | $0.16 | $0.32 | $0.64 |
| South Dakota | 14.33¢/kWh | $0.08 | $0.16 | $0.32 | $0.64 |
| Tennessee | 13.90¢/kWh | $0.08 | $0.15 | $0.31 | $0.62 |
| Wyoming | 13.88¢/kWh | $0.08 | $0.15 | $0.31 | $0.62 |
| Nevada | 13.79¢/kWh | $0.08 | $0.15 | $0.31 | $0.61 |
| Iowa | 13.77¢/kWh | $0.08 | $0.15 | $0.31 | $0.61 |
| Montana | 13.77¢/kWh | $0.08 | $0.15 | $0.31 | $0.61 |
| Louisiana | 13.51¢/kWh | $0.08 | $0.15 | $0.30 | $0.60 |
| Missouri | 13.45¢/kWh | $0.07 | $0.15 | $0.30 | $0.60 |
| Arkansas | 13.43¢/kWh | $0.07 | $0.15 | $0.30 | $0.60 |
| Oklahoma | 13.37¢/kWh | $0.07 | $0.15 | $0.30 | $0.59 |
| Utah | 13.17¢/kWh | $0.07 | $0.15 | $0.29 | $0.59 |
| Idaho | 12.80¢/kWh | $0.07 | $0.14 | $0.28 | $0.57 |
| Nebraska | 12.70¢/kWh | $0.07 | $0.14 | $0.28 | $0.56 |
| North Dakota | 12.19¢/kWh | $0.07 | $0.14 | $0.27 | $0.54 |
What a full charge costs for 16 current power stations
The model table combines our manufacturer-source capacity database with the same EIA electricity rates and 90% efficiency assumption.
| Model | Capacity | Grid energy | U.S. avg | North Dakota | Hawaii |
|---|---|---|---|---|---|
| EcoFlow RIVER 3 Plus | 286 Wh | 0.32 kWh | $0.06 | $0.04 | $0.15 |
| Jackery Explorer 600 Plus | 632 Wh | 0.70 kWh | $0.13 | $0.09 | $0.32 |
| BLUETTI Elite 100 V2 | 1,024 Wh | 1.14 kWh | $0.21 | $0.14 | $0.52 |
| EcoFlow DELTA 3 Plus | 1,024 Wh | 1.14 kWh | $0.21 | $0.14 | $0.52 |
| Anker SOLIX C1000 | 1,056 Wh | 1.17 kWh | $0.21 | $0.14 | $0.54 |
| Jackery Explorer 1000 v2 | 1,070 Wh | 1.19 kWh | $0.22 | $0.14 | $0.55 |
| BLUETTI AC180 | 1,152 Wh | 1.28 kWh | $0.23 | $0.16 | $0.59 |
| VTOMAN FlashSpeed 1500 | 1,548 Wh | 1.72 kWh | $0.31 | $0.21 | $0.79 |
| OUPES Mega 2 | 2,048 Wh | 2.28 kWh | $0.41 | $0.28 | $1.05 |
| EcoFlow DELTA 2 Max | 2,048 Wh | 2.28 kWh | $0.41 | $0.28 | $1.05 |
| BLUETTI AC200L | 2,048 Wh | 2.28 kWh | $0.41 | $0.28 | $1.05 |
| Jackery Explorer 2000 Plus | 2,042.8 Wh | 2.27 kWh | $0.41 | $0.28 | $1.04 |
| Dabbsson DBS2300 Plus | 2,330 Wh | 2.59 kWh | $0.47 | $0.32 | $1.19 |
| Mango Power Power E | 3,533 Wh | 3.93 kWh | $0.71 | $0.48 | $1.80 |
| Anker SOLIX F3800 | 3,840 Wh | 4.27 kWh | $0.77 | $0.52 | $1.96 |
| EcoFlow DELTA Pro 3 | 4,096 Wh | 4.55 kWh | $0.83 | $0.55 | $2.09 |
How the charging-cost estimate works
We use the EIA residential electricity price in cents per kilowatt-hour and convert nominal battery capacity to grid energy using a 90% charging-efficiency assumption.
Grid kWh = nominal battery kWh ÷ charging efficiency. Estimated cost then equals grid kWh multiplied by the residential electricity rate.
Example: a 2 kWh battery at 90% efficiency requires about 2.22 kWh from the wall for a theoretical 0–100% refill. At the U.S. YTD average of 18.16¢/kWh, that is roughly $0.40.
The downloadable CSV includes the EIA rate and the four standardized capacity calculations for each jurisdiction.
EIA state averages are not the same as your tariff. Time-of-use pricing, taxes, fixed charges, demand charges, solar self-consumption and utility-specific rates can make your real marginal charging cost different. Enter your own cents/kWh in the calculator when you know it.
Why charging efficiency matters
The battery's nominal capacity is not identical to electricity drawn from the wall. Charger losses, power electronics, balancing and auxiliary loads mean grid input is higher than energy ultimately stored in the pack.
What the data says
Even large batteries are inexpensive to refill relative to their purchase price. The more useful ownership question is often how frequently the battery cycles and whether it is offsetting generator fuel, peak electricity rates or outage losses—not whether a single recharge costs fifty cents or one dollar.
Model partial charges and monthly cycling
The interactive calculator lets you choose a state rate or enter your actual tariff, then change battery size, starting/ending state of charge, charging efficiency and cycles per month.