Connecticut Utility Cost Calculator
Connecticut utilities: about $352 a month for a typical home (electric ~$168, gas ~$70, water ~$41, internet ~$73) at EIA's 24.16¢/kWh. Try your own numbers.
Typical total monthly utility bill in Connecticut: $352 for a 1,800 sq ft home with 3 occupants -- $168 electricity, $70 natural gas, $41 water/sewer, and $73 internet under this page's default assumptions. Change the inputs below, or compare states with the utility bill estimator.
| Measure | Connecticut | Rank, normal or source |
|---|---|---|
| Electricity price, July 2026 | 24.16¢ per kWh (July 2025 27.6¢, −12.5%) | 10th highest of 50; 32% above U.S. |
| Use per home, 2024 | 695 kWh a month | 35th highest of 50; 19% below U.S. |
| Electric bill | 695 kWh × 24.16¢ = $167.91, about $168 | 2024: $199.66 at 28.75¢, 2nd highest of 50 |
| Natural gas, 2024 average | $16.83 per Mcf (about $1.62 per therm) | not ranked (a 2024 average); May 2026 $23.33, not used |
| Heating degree days, Jul 2025–Jun 2026 | 6,142 | normal 6,069, 1% above |
| Cooling degree days, same months | 701 | normal 567, 24% above |
| Home energy, 2024 | heating oil and propane 36.8%, natural gas 29.4%, electricity 26.5%, wood 4.8%, small-scale solar 2.6% | EIA SEDS, at the meter |
| In-state generation, 2024 | natural gas 58.2%, nuclear 37.7%, solar 1.1% | EIA-923 |
| Largest residential sellers, 2024 | Connecticut Light & Power Co (investor-owned) 56.2%; United Illuminating Co (investor-owned) 12.9% | 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.
Estimate only — these are not official figures
EIA use and prices for Connecticut; 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 Connecticut Light & Power Co or your own utility.
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Pre-filled: EIA Electric Power Monthly, Table 5.6.A (Residential, July 2026)
Pre-filled: EIA residential natural gas price, 2024 annual average ($16.83/Mcf)
Additional Details
Pre-filled: C2ER Cost of Living Index (via MERIC)
Monthly Electric Bill
Estimated • Based on your inputs
Total Monthly Utilities
$352.00
Annual Utility Costs
$4,224.00
Detailed Breakdown
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.
How This Calculator Works
Calculation methodology and assumptions
Connecticut inputs: 695 kWh a month (EIA-861 2024) × 24.16¢ (EIA, July 2026), scaled to your home size and occupants; gas $16.83/Mcf ÷ 10.37 = $1.623/therm (EIA 2024 annual average) (EIA lists Connecticut's 2025 annual average as not available, so the 2024 annual average is used); water $5.70 per 1,000 gallons and internet $73/month, both from cost-of-living index 103.6; income share on $96,049.
Key State Information
1,552,746 Connecticut residential electricity customers (EIA-861, 2024) · cost-of-living index 103.6 · median household income $96,049.
What drives Connecticut utility bills
Heating is Connecticut's larger weather load: a normal July-to-June brings 6,069 heating against 567 cooling degree days. The 2025–26 heating season peaked in Jan 2026.
Heating oil and propane supplied 36.8% of Connecticut home energy in 2024, natural gas 29.4%. Heating oil and propane are not priced here: add that fuel bill if your home burns either.
Connecticut Light & Power Co sold 56.2% of Connecticut's 2024 residential electricity, United Illuminating Co 12.9%.
| Month | Heating | Cooling |
|---|---|---|
| Jul 2025 | 4 | 330 |
| Aug 2025 | 47 | 155 |
| Sep 2025 | 97 | 39 |
| Oct 2025 | 361 | 2 |
| Nov 2025 | 689 | 0 |
| Dec 2025 | 1,097 | 0 |
| Jan 2026 | 1,216 | 0 |
| Feb 2026 | 1,082 | 0 |
| Mar 2026 | 787 | 0 |
| Apr 2026 | 467 | 5 |
| May 2026 | 246 | 31 |
| Jun 2026 | 49 | 139 |
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.
Our editorial standardsFrequently Asked Questions
What is the average electric bill in Connecticut?
EIA 2024: $199.66 a month (695 kWh × 28.75¢). July 2026 price 24.16¢: $168.
National Data
The full 50-state dataset behind this calculator
Compare Connecticut With Other States
Side-by-side tax, housing & cost of living comparisons