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Interstate Gas Supply, Inc.
Interstate Gas Supply, Inc. served 69,442 residential customers in Pennsylvania in 2025 (1.2% of the state's residential customers), the 9th largest of 100 utilities reporting there. Energy-only service; ownership: retail power marketer; balancing authority PJM.
The meter, one average month.
Scroll to run 30 days of Interstate Gas Supply, Inc.'s average residential use through a five-dial register.
- Used so far
- 819 kWh
- At 12.95¢/kWh
- $106
Price ruler0 to 50¢ per kWh
Where 12.95¢ sits.
This page covers energy-only service, which is only part of a household's bill, so its 12.95¢ is not compared with the Pennsylvania bundled average of 19.3¢. Both are drawn for scale only.
2020 and 2025EIA-861
Five years, same meter.
In 2020 the average Interstate Gas Supply, Inc. home used 979 kWh a month at 8.68¢ and paid $84.95. In 2025 it used 819 kWh at 12.95¢ and paid $106: the price per kWh is up 49.2%.
| Measure | 2020 | 2025 |
|---|---|---|
| Price, ¢/kWh | 8.68 | 12.95 |
| Use, kWh a month | 979 | 819 |
| Bill, US$ a month | 84.95 | 106.05 |
| Class | Customers | MWh sold | ¢/kWh |
|---|---|---|---|
| Residential | 69,442 | 682,302 | 12.95 |
| Commercial | 14,091 | 1,877,558 | 8.56 |
Who else is on the line
Homes are one class.
EIA-8612025Utility 58957
The filing, line by line.
| Measure | Value | Unit |
|---|---|---|
| Average price | 12.95 | ¢/kWh |
| Pennsylvania average price | 19.3 | ¢/kWh |
| Price change over 5 years | 49.2 | % |
| Typical monthly use | 819 | kWh |
| Typical monthly bill | 106.05 | US$ |
| Residential customers | 69,442 | accounts |
| Share of PA residential customers | 1.2 | % |
| Size rank in PA | 9 of 100 | by customers |
Rate plans on fileOpenEI URDB
None shown for this page. Plan counts appear once per utility, on its largest state's bundled page; how plans are counted.
Pennsylvania: state average, five-year steps and every provider