Households have a variety of fuels that can be used when it comes to heating. Natural Gas is the most common choice in Sullivan, used by 4,725,574 or 61% of homeowners. The next most popular primary heating fuel for Sullivan homeowners is Electricity, used by 1,365,710 homes (18%). The other homes are heated with Heating Oil (14%), Propane (5%), Other (1%), and Wood (1%).

Sullivan County Residential Primary Home Heating Fuel (No. of Households)

Year	Natural Gas	Propane	Electricity	Oil	Wood	Solar	Other
2025	4,725,574	377,922	1,365,710	1,103,323	92,054	16,434	100,232
2024	4,679,558	370,910	1,292,868	1,143,783	96,147	15,259	97,524
2023	4,581,041	402,335	1,263,700	1,212,850	100,015	11,208	104,369
2022	4,542,443	400,969	1,190,880	1,279,260	99,080	11,314	103,810
2021	4,489,009	388,311	1,118,015	1,293,770	108,202	8,858	98,952
2020	4,504,504	353,944	1,014,730	1,343,665	111,106	8,778	89,024
2019	4,519,999	319,576	911,445	1,393,560	114,011	8,697	79,096
2018	4,397,917	308,020	890,554	1,459,976	120,159	6,022	82,621
2017	4,339,349	294,973	867,925	1,496,843	122,088	5,988	77,386
2016	4,227,422	273,838	860,856	1,540,787	126,890	6,535	79,479
2015	4,202,413	265,224	808,370	1,649,860	141,016	3,120	78,999
2014	4,186,666	258,775	770,577	1,752,656	145,012	2,573	76,963
2013	4,074,510	259,367	764,400	1,802,442	148,422	2,525	81,841
2012	4,044,389	237,738	775,390	1,901,118	155,603	2,168	61,429
2011	4,014,222	222,634	707,016	1,979,067	143,287	2,728	63,609
2010	3,961,085	227,607	676,262	2,068,004	143,242	1,823	61,664

Heating Oil (Fuel Oil) Use in Sullivan

Fuel oil has become less frequently used in Sullivan. In the 1 years since 2024, the number of homeowners using fuel oil fell from 1,143,783 to 1,103,323, a 4% drop.

Propane vs. Natural Gas use for home heating in Sullivan

Between 2024 and today, the number of houses using propane as the primary space heating fuel increased from 370,910 to 377,922, a 2% change. Comparing 2024 and today, the number of homes using natural gas as the primary space heating fuel shot up from 4,679,558 to 4,725,574, a 1% change.

Electricity use for home heating in Sullivan

Electric heat pump systems for home heating are more popular in Sullivan. Since 2024, the number of homes heating with electricity shot up from 1,292,868 to 1,365,710, a 6% change.

Adoption of solar home heating systems in Sullivan

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. Now, 16,434 homes in Sullivan are heated with active solar arrays. This is a 8% gain from 2024, when 15,259 homes utilized active solar heating.

Sullivan County Heating Oil Trends

Last year, Sullivan County homeowners purchased a total of 7 million gallons of heating oil.

Short Term Trends

Sullivan’s overall oil usage changes each year as winter conditions change. As the temperature outside drops, homes’ boilers need to burn additional number two heating oil to keep the house warm inside. Last winter, the average outside temperature in Sullivan was 28.1°F, which was 5.4°F colder than the prior winter's average outside temperature.

Sullivan County Average Winter Temperature

Heating Season	Average Temperature
2024 - 2025	28.1° F
2023 - 2024	33.5° F

Sullivan County Homeowner’s Guide to Selecting an Oil Company

For Sullivan families heating with heating oil, choosing which of the 29 heating oil companies that serve Sullivan makes a big difference.

Full Service Oil Companies: Homeowners who prefer a “set-it-and-forget-it” heating system choose one of the 190 “full-service” oil companies that serve Sullivan. Full service companies such as Orange Energy Inc or JusSar Fuel Inc offer homeowners annual contracts which consist of a combined package of both automatic heating oil delivery and HVAC repair. With an automatic oil delivery contract, the company tracks your home’s fuel oil consumption and makes deliveries when your tank is running low. The client does not need to monitor the level of the oil tank or place individual orders.

Discount Oil Companies: Often called “COD Fuel” or “Cash Heating Oil” companies, discount oil companies are for homeowners 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 either when the level runs low or just before a major snowstorm. A few of the 2 Sullivan cash heating oil companies serving Sullivan include Big O Inc and Penguin Energy Corp.

Sullivan Oil Company By The Numbers: Heating oil Companies Serving Sullivan: 29 companies .
Average Number of Sullivan Households Served per Heating Oil company : 38046

Sullivan Heating Oil Delivery Overview

1,103,323 homes in Sullivan heat their homes with fuel oil. This makes oil delivery essential, especially when Sullivan temperatures drop as low as 22.4° F each winter. 14.2% of Sullivan houses are reliant on number two heating oil delivery each winter.

7% of Sullivan County Households Rely On Heating Oil Delivery Each Winter

Sullivan County Households	Sullivan County Heating Oil Households
15.6M	1.1M

525 Sullivan Heating Oil Companies You Can Trust

With 664,748,714 gallons of fuel oil delivered to Sullivan houses during this past winter, the Sullivan community depends on its 525 oil companies to keep their oil tanks full. 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 Sullivan, two of the closest terminals are Sprague in Bridgeport, CT and N.h.term in New Haven, CT. Then, the truck delivers the number two heating oil to residences and companies throughout Sullivan and the surrounding area.

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