Families have a host of fuels that can be used when it comes to heating. Natural Gas is the most popular choice in Middlesex, used by 537,918 or 37% of families. The 2nd most popular primary heating fuel for Middlesex families is Heating Oil, used by 491,612 homes (34%). The rest of the homes are heated with Electricity (21%), Propane (6%), Wood (1%), and Other (1%).

Middlesex County Residential Primary Home Heating Fuel (in Number of Households)

Year	Natural Gas	Propane	Electricity	Oil	Wood	Solar	Other
2025	537,918	88,504	302,730	491,612	19,550	6,488	10,689
2024	526,146	82,630	293,463	509,593	21,103	5,852	10,146
2023	530,315	92,469	276,839	496,091	19,885	4,238	15,392
2022	519,969	86,596	262,494	520,424	18,487	2,985	13,466
2021	506,772	80,721	258,306	532,053	22,992	2,966	14,306
2020	503,622	73,848	247,960	533,736	22,648	1,909	11,330
2019	500,471	66,974	237,614	535,420	22,304	852	8,355
2018	497,422	60,526	232,420	549,036	22,954	1,579	8,782
2017	478,136	55,608	219,208	562,247	24,510	1,029	10,257
2016	476,852	55,631	230,532	554,283	23,580	900	9,232
2015	471,195	51,915	214,414	561,996	29,530	937	8,159
2014	464,748	49,540	212,031	576,948	34,478	554	11,670
2013	449,787	46,397	209,463	585,757	29,361	401	10,236
2012	442,443	43,849	212,708	615,734	27,351	378	9,891
2011	437,840	43,778	207,267	625,164	25,707	611	7,588
2010	427,850	39,533	203,568	650,621	26,373	299	7,110

Heating Oil (Fuel Oil) Use in Middlesex

Number two heating oil has become less popular in Middlesex. In the 10 years since 2015, the number of households using number two heating oil dipped from 561,996 to 491,612, a 13% drop.

Propane vs. Natural Gas use for home heating in Middlesex

Between 2015 and today, the number of houses using propane as the primary space heating fuel rose from 51,915 to 88,504, a 70% change. Comparing 2015 and today, the number of homes using natural gas as the primary space heating fuel ramped up from 471,195 to 537,918, a 14% change.

Electricity use for home heating in Middlesex

Electric heat pump systems for home heating are more prevalent in Middlesex. Since 2015, the number of homes heating with electricity ramped up from 214,414 to 302,730, a 41% change.

Adoption of solar home heating systems in Middlesex

The most eco-friendly heating option is solar. With an “active” solar heating system, liquid is circulated between solar panels on a home’s roof and a heat energy storage tank (similar to a hot water heater) in the basement. As it stands today, 6,488 homes in Middlesex are heated with active solar arrays. This is a 592% gain from 2015, when 937 homes incorporated active solar heating.

Middlesex County Heating Oil Trends

Last year, Middlesex County homeowners purchased a total of 27 million gallons of heating oil.

Short Term Trends

Middlesex’s overall heating oil usage fluctuates each year correlating with how cold it gets each winter. As the temperature outside dips, homes’ HVAC systems need to burn more and more oil to keep the house warm inside. Last winter, the average outside temperature in Middlesex was 30.6°F, which was 4.6°F colder than the prior winter's average outside temperature.

Middlesex County Average Winter Temperature

Heating Season	Average Temperature
2024 - 2025	30.6° F
2023 - 2024	35.2° F

Middlesex County Homeowner’s Guide to Selecting an Oil Company

For Middlesex homes heating with oil, selecting which of the 199 heating oil companies that serve Middlesex is an important decision.

Full Service Oil Companies: Homeowners who prefer a “set-it-and-forget-it” heating system pick one of the 961 “full-service” oil companies that serve Middlesex. Full service companies such as Aaa Oil Company or Spring Brook Ice & Fuel offer families annual contracts which consist of a combined package of both automatic heating oil delivery and heating system repair. With an automatic heating oil delivery contract, the company tracks your home’s number two heating oil consumption and makes deliveries when your tank is running low. The homeowner does not need to monitor the level of the oil tank or place individual orders.

Discount Oil Companies: Also known by the names “COD Fuel” or “Cash Heating Oil” companies, discount oil companies are for households who are budget-conscious. With discount oil companies, in exchange for lower prices, you monitor the fuel oil level in your tank, and you place an oil order when you're running low. A few of the 2 Middlesex cash heating oil companies serving Middlesex include Angel Fuel LLC and Martin Heating Oil LLC.

Middlesex Heating Oil Company By The Numbers: Heating oil Companies Serving Middlesex: 199 companies .
Average Number of Middlesex Homes Served per Fuel Oil company : 2470

Middlesex Heating Oil Delivery Overview

491,612 families in Middlesex heat their homes with heating oil. This makes oil delivery essential, especially when Middlesex temperatures drop as low as 25.1° F each winter. 33.7% of Middlesex households depend on number two heating oil delivery each winter.

16.8% of Middlesex County Households Rely On Heating Oil Delivery Each Winter

Middlesex County Households	Middlesex County Heating Oil Households
2.9M	491,612

1528 Middlesex Oil Companies Homeowners Can Count On

With 397,280,973 gallons of fuel oil delivered to Middlesex homes during this past winter, the Middlesex community depends on its 1528 oil companies to keep warm throughout the winter. Oil delivery is a two step process: First, an oil truck picks up oil at the nearest bulk fuel terminal (also known as a “rack”). In the case of Middlesex, two of the closest terminals are Buckeye in Wethersfield, CT and Sprague W in Springfield, MA. Then, the truck delivers the oil to residences and companies throughout Middlesex and the surrounding vicinity.

Heating Oil Near You In These Adjacent Counties

Fairfield County, CT

Hartford County, CT

Litchfield County, CT

New London County, CT

Tolland County, CT

Windham County, CT