Natural Gas Price in Delaware (2025)
Natural gas in Delaware costs $1.54 per therm on average for homes ($15.97 per Mcf, 2025) – 4% above the US average and the 27th cheapest of 51 states and DC. The average customer's bill works out to about $72 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $3.22/therm in July 2026 (monthly prices swing with the season).
Gas bill in Delaware by usage
| Monthly use | Delaware | At US average |
|---|---|---|
| 30 therms (29 ccf) | $46.20 | $44.38 |
| 60 therms (58 ccf) | $92.40 | $88.76 |
| 100 therms (96 ccf) | $154.00 | $147.93 |
| 150 therms (145 ccf) | $231.00 | $221.89 |
Average price includes delivery and fixed charges spread over all gas sold. Roughly: 30 therms is a summer month with a gas water heater and stove; 100–150 therms is a cold-climate winter month with gas heat.
Price trend
Delaware's average residential price rose from $14.78 per Mcf in 2024 to $15.97 in 2025 (+8.1%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Delaware
One therm of gas holds the same energy as 29.3 kWh of electricity. At Delaware's 18.48¢/kWh, that much electricity costs $5.42 versus $1.54 for the gas. Gas furnaces turn 80–97% of that into heat, while a heat pump delivers 2–3 times the electricity it uses. Run your own numbers with the heat pump vs furnace calculator, and see electricity cost in Delaware.
How Delaware compares
- Missouri: $1.44/therm, about $73/month
- Pennsylvania: $1.45/therm, about $92/month
- Maryland: $1.56/therm, about $82/month
- North Carolina: $1.58/therm, about $65/month
- US average: $1.48/therm, about $76/month.
Other South Atlantic states: West Virginia ($1.33), Maryland ($1.56), North Carolina ($1.58), District of Columbia ($1.61), Virginia ($1.62), South Carolina ($1.63), Georgia ($1.97), Florida ($2.46).
Frequently asked questions
How much is natural gas per therm in Delaware?
Delaware residential customers paid an average of $1.54 per therm in 2025 ($15.97 per thousand cubic feet), including delivery charges. That is 4% above the US average of $1.48 and ranks 27th cheapest of 51.
What is the average gas bill in Delaware?
The average Delaware gas customer used about 54.4 Mcf (564 therms) a year in 2024, which works out to about $72 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Delaware?
The average price rose from $14.78 per Mcf in 2024 to $15.97 in 2025 (+8.1%).
Is gas or electric heat cheaper in Delaware?
Per unit of energy, gas at $1.54/therm compares with $5.42 for the same energy from electricity at 18.48¢/kWh. A heat pump delivers 2–3 units of heat per unit of electricity, so it can still beat gas – compare with your numbers in the heat pump vs furnace calculator.
Sources: EIA natural gas prices; EIA residential deliveries; EIA number of consumers.