Utility Cost Calculators Delaware

Delaware Utility Cost Calculator

Calculate utility costs in Delaware using real EIA electricity (18.48¢/kWh) and natural gas rates. Estimated electric ~$168/mo, gas ~$66/mo, water ~$40/mo for a typical home.

Typical total monthly utility bill in Delaware: $344 for a 1,800 sq ft home with 3 occupants -- $168 electricity, $66 natural gas, $40 water/sewer, and $70 internet under this page's default assumptions. Change the inputs below, or compare states with the utility bill estimator.

What sets Delaware utility bills
Measure	Delaware	Rank, normal or source
Electricity price, July 2026	18.48¢ per kWh (July 2025 16.58¢, +11.5%)	18th highest of 50; 1% above U.S.
Use per home, 2024	911 kWh a month	24th highest of 50; 6% above U.S.
Electric bill	911 kWh × 18.48¢ = $168.35, about $168	2024: $150.87 at 16.57¢, 14th highest of 50
Natural gas, 2025 average	$15.97 per Mcf (about $1.54 per therm)	18th highest of 44 (2025 averages); July 2026 $33.41, not used
Heating degree days, Jul 2025–Jun 2026	4,647	normal 4,740, 2% below
Cooling degree days, same months	1,279	normal 1,057, 21% above
Home energy, 2024	electricity 50.1%, natural gas 32.5%, heating oil and propane 13%, wood 1.6%, small-scale solar 1.6%, geothermal 1.2%	EIA SEDS, at the meter
In-state generation, 2024	natural gas 87.6%, other gas 4.6%, solar 3.5%	EIA-923
Largest residential sellers, 2024	Delmarva Power (investor-owned) 56.4%; Delaware Electric Cooperative (cooperative) 25.1%	EIA-861

EIA (EPM 5.6.A, EIA-861, gas annual prices at 10.37 therms per Mcf) read 2026-10-11; NOAA CPC, EIA SEDS and EIA-923 2026-10-13.

By StateCalc Team

Updated Oct 13, 2026 Estimate — not official figures

Use Calculator Free — No Sign-up Instant Results Updated Oct 2026

Estimate only — these are not official figures

EIA use and prices for Delaware; home-size scaling, gas use, water and internet modeled

Do not rely on these amounts for budgeting or payment. For exact amounts, check the residential rate of Delmarva Power or your own utility.

This calculator requires JavaScript. Please enable JavaScript in your browser to change the inputs and recalculate the result.

Enter Your Details

Adjust values to see instant results

Home Size (sq ft)

20010000

Number of Occupants

110

Electric Rate ($/kWh)

0.050.6

Pre-filled: EIA Electric Power Monthly, Table 5.6.A (Residential, July 2026)

Natural Gas Rate ($/therm)

0.38

Pre-filled: EIA residential natural gas price, 2025 annual average ($15.97/Mcf)

Additional Details

Water Rate ($/1000 gal)

120

Delaware COL Index

50200

Pre-filled: C2ER Cost of Living Index (via MERIC)

Monthly Electric Bill

$168.00

Estimated • Based on your inputs

Total Monthly Utilities

$344.00

Annual Utility Costs

$4,128.00

Detailed Breakdown

Monthly Gas Bill$66.00

36%

Monthly Water & Sewer$40.00

22%

Internet & Cable (Est.)$70.00

39%

% of Median Income4.72%

Cost per Sq Ft/Month$0.19

Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.

Delaware Quick Facts

6.6% Income Tax Rate

0.54% Property Tax Rate

$87,534 Median Income

100.6 Cost of Living

How This Calculator Works

Calculation methodology and assumptions

Delaware inputs: 911 kWh a month (EIA-861 2024) × 18.48¢ (EIA, July 2026), scaled to your home size and occupants; gas $15.97/Mcf ÷ 10.37 = $1.54/therm (EIA 2025 annual average); water $5.53 per 1,000 gallons and internet $70/month, both from cost-of-living index 100.6; income share on $87,534.

Key State Information

473,508 Delaware residential electricity customers (EIA-861, 2024) · cost-of-living index 100.6 · median household income $87,534.

Standard financial formulas Pre-filled with documented models and state context Estimates only — not financial advice

Data Source

U.S. Energy Information Administration (EIA), Form EIA-861 & monthly energy reports

View Original Source | Source record reviewed Aug 7, 2026 | Review target: annually

What drives Delaware utility bills

Heating is Delaware's larger weather load: a normal July-to-June brings 4,740 heating against 1,057 cooling degree days. The 2025–26 heating season peaked in Jan 2026.

Electricity supplied 50.1% of Delaware home energy in 2024, natural gas 32.5%. Heating oil and propane (13%) are not priced here: add that fuel bill if your home burns either.

Delmarva Power sold 56.4% of Delaware's 2024 residential electricity, Delaware Electric Cooperative 25.1%.

Delaware degree days by month
Month	Heating	Cooling
Jul 2025	0	443
Aug 2025	3	239
Sep 2025	3	177
Oct 2025	235	10
Nov 2025	539	0
Dec 2025	939	0
Jan 2026	1,073	0
Feb 2026	909	0
Mar 2026	533	2
Apr 2026	282	40
May 2026	128	102
Jun 2026	3	266

StateCalc Team

Editorial Team

The StateCalc team builds free financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.

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