Connecticut Propane Price 2026: Cost Per Gallon, Suppliers & Delivery

Connecticut residential propane runs $3.78/gal in 2026, ahead of the Northeast regional average and roughly 36% above the national mark. This is the no-spin breakdown: real supplier list, fill-by-tank-size math, the heating-oil-vs-propane decision, and how to actually save money in a high-cost market.

Last verified 27 April 2026 · Sourced from EIA Connecticut residential propane price survey

Connecticut Propane Pricing Snapshot (2026)

Connecticut residential avg

$3.78/gal

EIA 2026 survey, full-service residential delivery

vs national average

+36%

National avg $2.78/gal. CT pays $1.00 more per gallon.

vs Northeast region avg

+6%

Region avg $3.57/gal. CT runs above the regional norm.

Annual fuel cost (1,000 gal)

$3780

Typical CT propane-heat household uses 800-1,200 gal/year

500-gallon refill (400 usable)

$1512

Most common residential tank size in CT

Pre-buy savings (May-Aug)

$300-$500/yr

Lock-in or cap-price contracts beat winter spot pricing

Connecticut is one of the more expensive US markets for residential propane, behind only Vermont, Massachusetts, Maine, Hawaii, and Alaska in our 2026 dataset. Pricing pressure comes from distance to Gulf Coast production, a small CT propane customer base relative to the heating-oil-dominant residential mix, and low supplier route density outside the I-91 corridor.

Why Connecticut Propane Prices Are High

CT consistently sits in the top decile of US residential propane prices. The drivers are structural, not seasonal. They will not normalise back to national average without a major shift in regional propane infrastructure.

1. Distance from production. Roughly 90% of US propane comes from natural gas processing in Texas, Louisiana, Oklahoma, and the Marcellus/Utica shale (PA, OH, WV). Connecticut sits 1,500+ miles from Gulf Coast supply and depends on rail and pipeline transport into Mid-Atlantic terminals before truck delivery. Every mile and every transfer adds cost before retail markup.

2. Heating-oil-dominant residential mix. Connecticut has one of the highest heating-oil shares of any US state for residential heating. That leaves propane as a smaller, more dispersed customer base. Fewer customers per supplier route, smaller storage volumes per terminal, and weaker supplier-level economies of scale all push per-gallon overhead up.

3. Limited supplier competition outside dense corridors. The I-91 (Hartford-New Haven) and I-95 (coastal Fairfield) corridors have multiple suppliers competing on price. Northwest CT (Litchfield County) and parts of Windham County have only 2-3 active residential propane suppliers, which lets retailers hold per-gallon margin $0.30-$0.60 above competitive zones.

4. Rail-to-truck terminal margins. Most CT propane arrives via rail to terminals in New York, New Jersey, and Pennsylvania, then is transferred to bobtail trucks for last-mile delivery. Each handoff is a margin layer. Suppliers with their own bulk storage in-state (Hocon Gas, Connecticut Propane & Petroleum) can shave one of those layers and tend to price more competitively.

Connecticut Propane Companies: Verified Supplier List

Nine residential propane suppliers we have confirmed serve Connecticut zip codes in 2026. We list two national chains, three regional family operators with in-state bulk storage, and four local independents. Always quote at least three suppliers, including one from each tier, before signing a service contract or pre-buy.

AmeriGas

National chain

Coverage: Statewide. CT offices include Colchester (275 South Main St) and Bristol (651 Middle St); 269 service points listed across CT.

Notes: Largest US propane retailer. Predictable service, but pricing rarely beats regional operators. Best when you need wide geographic coverage or already have an AmeriGas tank.

Suburban Propane

National chain

Coverage: Statewide via locations in Uncasville, South Windsor, Derby, and Windsor. Service areas span Hartford, Tolland, Middlesex, New London, Windham, Fairfield, New Haven, and Litchfield counties.

Notes: 24/7 customer line at 1-800-PROPANE. Comparable pricing to AmeriGas; negotiate hard on first-fill and per-gallon rate before committing.

Hocon Gas

Regional family operator (founded 1952)

Coverage: Five service centers: Danbury, Waterbury, Guilford, Norwalk, and Torrington. Covers Western, Central, South Central, Southwestern, and Northwestern CT plus parts of NY and Western MA.

Notes: One of the largest CT propane and heating oil distributors with 400,000+ gallons of in-state storage. Mid-priced. Strong appliance sales and service arm.

Connecticut Propane & Petroleum

Regional family operator

Coverage: Headquartered in Marlborough, CT. Serves central and eastern Connecticut.

Notes: 300,000 gallons of on-site storage at Marlborough; advertised as the largest single-site retail propane facility in CT. Often competitive on per-gallon rate.

Spicer Propane (Spicer Advanced)

Regional operator

Coverage: Eastern Connecticut and Rhode Island.

Notes: Propane plus HVAC services. Useful if you want a single vendor for fuel and heating-system maintenance.

New England Propane

Regional operator

Coverage: Fairfield County, CT and neighboring Westchester County, NY.

Notes: Automatic delivery and 24/7 emergency response. GASCheck safety inspection program included with service.

Uncas Gas

Local independent

Coverage: Eastern Connecticut.

Notes: Smaller, route-dense operator. Decades of experience in local propane safety. Often the price leader in its service zone but limited geographic reach.

Northeast Oil & Propane

Local independent

Coverage: Windham and New London counties (CT), parts of Eastern Tolland county, Western Rhode Island, and southern Worcester county (MA).

Notes: Fuel oil plus propane. Good option for dual-fuel households and for the eastern CT/RI border region.

Superior Energy

Local independent

Coverage: Vernon, CT and surrounding Tolland/Hartford county area.

Notes: Local dispatch, no remote call center. Smaller pricing footprint but service-focused.

Verification note. Each supplier above was verified to actively serve Connecticut zip codes as of April 2026. The Connecticut Department of Consumer Protection maintains a registered propane dealers list at portal.ct.gov; if a company you are quoted is not on that list, do not sign. We do not list Eastern Propane (NH-based; NH/MA/ME/RI/VT only, not CT) despite frequent confusion.

Connecticut Propane Fill Costs by Tank Size (at $3.78/gal)

Propane tanks fill to 80% of stated capacity (the "80% rule") to allow for thermal expansion. Below is what each fill costs at the CT 2026 average. Real-world quotes vary 10-15% above or below the EIA average depending on supplier, contract, and delivery frequency.

Tank size	Usable gallons (80%)	Fill cost at $3.78/gal	vs national ($2.78/gal)
100 gal	80 gal	$302	+$80
250 gal	200 gal	$756	+$200
500 gal	400 gal	$1512	+$400
1000 gal	800 gal	$3024	+$800

Compare to the national refill cost guide or check pricing in other states.

Connecticut Heating Season & Annual Use

Connecticut's residential heating season runs roughly five months, November through March, with peak demand in January and February. Spring (April-May) and fall (September-October) shoulder seasons see modest space-heating demand on cold nights, while June-August is essentially water-heating and cooking only for propane-heated households.

Typical CT propane-heat households consume 800-1,200 gallons per year, depending on house size, insulation, and how much of the load is propane versus another fuel. A 2,400 sqft Colonial in Hartford County with propane handling space heat, water heat, range, and dryer averages 1,000-1,100 gallons. A propane-only-for-cooking-and-water-heating household, with electric or oil for space heat, runs 150-300 gallons annually.

Translated to dollars at the 2026 CT average: a 1,000 gallon household pays $3780 per year for fuel alone, before tank rental fees, delivery surcharges, or service contracts. That is $1,000 more than a comparable household in a national-average market and around $1600 more than a Texas household at the cheapest US end.

CEAP assistance for income-qualified households. The Connecticut Energy Assistance Program (CEAP) covers propane and other deliverable fuels for households at or below 60% of State Median Income. Basic Benefits range $295-$595 per heating season, or $345-$645 if a household member is under 6, age 60+, or disabled. Crisis Benefits are available for emergency fuel deliveries. Apply through your local Community Action Agency or call 211.

Summer pre-buy is the single biggest lever. Pre-buying or capping in May-August routinely saves $300-$500 per year for a 1,000 gallon household versus paying winter spot rates. Most CT suppliers run their pre-buy enrollment between May 1 and August 31. Read the fine print: cap-price contracts let you keep savings if wholesale falls; flat pre-buy locks you in either direction.

Connecticut vs Neighbouring Northeast States (2026)

State	Price/gal	500-gal refill (400 usable)	vs national ($2.78)
Connecticut (this page)	$3.78	$1512	+36%
Maine	$3.82	$1528	+37%
New Hampshire	$3.72	$1488	+34%
Massachusetts	$3.89	$1556	+40%
New York	$3.58	$1432	+29%
Rhode Island	$3.68	$1472	+32%
Vermont	$3.95	$1580	+42%
National average	$2.78	$1112	0%

Connecticut sits in the middle of the Northeast cluster, cheaper than Vermont, Massachusetts, and Maine, but more expensive than New York, Rhode Island, and New Hampshire. New York's lower price reflects shorter rail distance to Marcellus/Utica supply and a denser propane customer base in upstate counties. The full Northeast region averages $3.57/gal, all of which sits well above the $2.78 national mark.

Connecticut Propane FAQ

Who has the cheapest propane in Connecticut?

There is no single cheapest supplier statewide. Pricing varies by zip code, contract type, and delivery frequency. In our supplier sample, smaller regional operators like Connecticut Propane & Petroleum (Marlborough), Uncas Gas (Eastern CT), and Northeast Oil & Propane (Windham/New London counties) tend to undercut national chains by $0.20-$0.40/gal because they have lower overhead and serve dense routes. Always request quotes from at least three suppliers, including one national (AmeriGas, Suburban Propane), one regional family operator (Hocon Gas, Connecticut Propane & Petroleum), and one local-only company in your county. Lock-in contracts and pre-buy programs in May-August routinely save $0.30-$0.60/gal versus paying winter spot rates.

Why is propane so expensive in Connecticut?

Connecticut sits 1,500+ miles from Gulf Coast propane production, so transport costs are baked in before any retailer markup. Propane reaches CT via rail-to-truck terminals in New York, Pennsylvania, and New Jersey, then ground-trucked to the state. Connecticut also has a small residential propane base relative to neighboring states because heating oil dominates much of the state's residential heating mix. Fewer propane customers means fewer supplier route economies, fewer competitive pressures, and higher per-gallon overhead. The 2026 EIA average for CT is $3.78/gal, compared to $2.78/gal national and $3.57/gal Northeast regional. That is roughly 36% above national and 6% above the Northeast average.

Am I eligible for the Connecticut Energy Assistance Program (CEAP)?

CEAP is open to households at or below 60% of the State Median Income. Households where any member receives Temporary Family Assistance (TFA), SNAP, or SSI are automatically income-eligible. Propane-heated households can receive Basic Benefits ($295-$595, or $345-$645 if a vulnerable person is in the household) and Crisis Benefit assistance for emergency fuel deliveries when basic benefits are exhausted. The 2025-2026 season is active. Apply through your local Community Action Agency (CAA), online via the CT Department of Social Services portal, or by calling 211. Apply early in the heating season because crisis-only applications often face delivery delays in peak January-February demand.

Should I switch from heating oil to propane in Connecticut?

Heating oil dominates Connecticut's residential heating market, and for many existing oil-heated homes the switch is not economic. Propane delivers about 91,500 BTU per gallon versus 138,500 for heating oil, so you burn roughly 1.5 gallons of propane to match 1 gallon of oil. At 2026 CT prices ($3.78/gal propane vs typical $4.20-$4.60/gal heating oil), the per-BTU cost is similar to slightly favourable for oil. Propane wins on cleanliness (no sulphur, no soot), appliance flexibility (gas range, dryer, generator), and indoor tank elimination, but the conversion cost ($6,000-$12,000 for a new boiler/furnace plus tank install) takes 8-15 years to recoup at current price spreads. Switch only if your oil system is already at end of life or you want propane for non-heating uses (cooking, generator, pool).

Does summer pre-buy actually save money in Connecticut?

Yes, consistently. Connecticut wholesale propane prices typically bottom in June-August, when refinery output is high and residential demand is near zero. CT suppliers running pre-buy or budget-lock programs in May-August have offered $3.20-$3.45/gal in recent years versus $3.80-$4.20/gal at January peak. On a 1,000 gallon annual usage, that is $300-$500/year saved. Read the contract before signing: cap-price contracts let you benefit if prices fall, while strict pre-buy locks you in regardless. Ask whether the contract is per-fill-up, per-gallon, or capped, and whether unused pre-paid gallons roll over.

How do I switch propane suppliers in Connecticut without losing my tank?

Most Connecticut homeowners rent their tank from their current supplier, which legally restricts who can fill it. To switch suppliers without buying out the tank, the new supplier typically arranges tank swap-out: they remove the existing supplier's tank (after notifying that supplier) and install their own. Process takes 1-3 weeks. If you own your tank outright (purchased it or it came with the house with a paid receipt), any licensed supplier can fill it. Owning the tank is the strongest leverage in Connecticut's market because it lets you shop on price every fill. Tank purchase from a supplier costs $800-$2,500 depending on size and install state.

When is the best time to fill my propane tank in Connecticut?

Late spring (May) and early summer (June-July) are the lowest-price windows in Connecticut. Avoid filling in December-February if you can help it: that is when wholesale spreads widen and CT spot rates spike $0.40-$0.80/gal above summer lows. Tactical play: time your fill so you arrive at winter with a 75-80% full tank from a September top-up at shoulder-season prices. Also pay attention to your supplier's automatic delivery thresholds. Setting it at 30% rather than 20% gives the supplier route flexibility, which some companies reward with a $0.05-$0.10/gal discount.

Connecticut Propane Price 2026: Cost Per Gallon, Suppliers & Delivery

Connecticut Propane Pricing Snapshot (2026)

Why Connecticut Propane Prices Are High

Connecticut Propane Companies: Verified Supplier List

AmeriGas

Suburban Propane

Hocon Gas

Connecticut Propane & Petroleum

Spicer Propane (Spicer Advanced)

New England Propane

Uncas Gas

Northeast Oil & Propane

Superior Energy

Connecticut Propane Fill Costs by Tank Size (at $3.78/gal)

Connecticut Heating Season & Annual Use

Connecticut vs Neighbouring Northeast States (2026)

Connecticut Propane FAQ

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