Homeowners have a choice of fuels to choose from when it comes to heating. Natural Gas is the most common choice in Warren, used by 2,627,206 or 74% of households. The next most popular primary heating fuel for Warren families is Electricity, used by 617,773 homes (17%). The remaining homes are heated with Heating Oil (5%), Propane (2%), Other (0.4%), and Solar (0.3%).

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

Year	Natural Gas	Propane	Electricity	Oil	Wood	Solar	Other
2025	2,627,206	70,406	617,773	185,324	10,688	11,798	14,006
2024	2,623,428	66,233	592,186	198,050	10,223	10,926	13,381
2023	2,552,593	95,605	606,537	215,314	10,749	9,388	20,755
2022	2,560,329	89,511	568,299	231,690	10,054	7,925	17,145
2021	2,545,038	87,258	555,363	240,765	9,820	7,643	19,506
2020	2,509,666	79,338	501,738	241,254	10,094	6,464	16,414
2019	2,474,295	71,419	448,114	241,742	10,368	5,284	13,323
2018	2,435,183	67,930	437,888	258,889	12,069	4,626	14,313
2017	2,425,008	62,490	415,119	271,265	11,994	4,801	12,938
2016	2,389,530	59,916	423,650	271,179	13,466	3,212	14,924
2015	2,398,744	61,082	385,792	299,222	14,398	1,781	12,721
2014	2,393,423	62,396	384,329	309,236	14,471	1,748	13,957
2013	2,354,824	60,943	388,226	329,733	17,421	1,270	10,710
2012	2,368,222	60,990	377,997	356,378	13,974	1,002	10,889
2011	2,342,608	58,315	360,855	376,568	11,869	332	7,917
2010	2,344,455	63,241	343,112	392,540	11,886	325	8,439

Heating Oil (Fuel Oil) Use in Warren

Fuel oil has become less frequently used in Warren. In the 1 years since 2024, the number of residents using oil declined from 198,050 to 185,324, a 6% drop.

Propane vs. Natural Gas use for home heating in Warren

Between 2024 and today, the number of houses using propane as the primary space heating fuel shot up from 66,233 to 70,406, a 6% change. Comparing 2024 and today, the number of homes using natural gas as the primary space heating fuel remained unchanged at 2,627,206, a 0% change.

Electricity use for home heating in Warren

Electric heat pump systems for home heating are more prevalent in Warren. Since 2024, the number of homes heating with electricity grew from 592,186 to 617,773, a 4% change.

Adoption of solar home heating systems in Warren

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, 11,798 homes in Warren are heated with active solar arrays. This is a 8% gain from 2024, when 10,926 homes incorporated active solar heating.

Warren County Heating Oil Trends

Last year, Warren County homeowners purchased a total of 5 million gallons of heating oil.

Short Term Trends

Warren’s overall number two heating oil consumption changes yearly primarily depending on how cold each winter is. As the temperature outside drops, homes’ furnaces need to burn increasing amounts of heating oil to maintain a constant interior temperature. Last winter, the average outside temperature in Warren was 33.5°F, which was 4.7°F colder than the prior winter's average outside temperature.

Warren County Average Winter Temperature

Heating Season	Average Temperature
2024 - 2025	33.5° F
2023 - 2024	38.2° F

Warren County Homeowner’s Guide to Selecting an Oil Company

For Warren homes heating with oil, choosing which of the 8 heating oil companies that serve Warren can drastically impact the cost of home heating.

Full Service Oil Companies: Homeowners who want a “set-it-and-forget-it” heating system choose one of the 8 “full-service” oil companies that serve Warren. Full service companies such as Patriot Discount Oil or Patriot Discount Oil offer families annual contracts which consist of a combined package of both automatic oil delivery and furnace repair. With an automatic heating oil delivery contract, the company tracks your home’s fuel oil consumption and makes deliveries when your tank is running low. The household does not need to monitor the level of the oil tank or place individual orders.

Discount Oil Companies: also referred to as “COD Fuel” or “Cash Heating Oil” companies, discount oil companies are for clients who are on a budget. With discount oil companies, in exchange for lower prices, you monitor the number two heating oil level in your tank, and you place an oil order when you're running low. A few of the 2 Warren cash heating oil companies serving Warren include Hackettstown Corporation and FuelRite Petroleum Inc.

Warren Number Two Heating Oil Company By The Numbers: Fuel oil Companies Serving Warren: 8 companies .
Average Number of Warren Households Served per Heating Oil company : 23166

Warren Heating Oil Delivery Overview

185,324 homes in Warren heat their homes with heating oil. This makes oil delivery essential, especially when Warren temperatures drop as low as 28.8° F each winter. 5.2% of Warren households are reliant on heating oil delivery each winter.

2.6% of Warren County Households Rely On Heating Oil Delivery Each Winter

Warren County Households	Warren County Heating Oil Households
7.1M	185,324

42 Warren Number Two Heating Oil Companies You Can Trust

With 169,797,916 gallons of heating oil delivered to Warren houses last winter, the Warren community depends on its 42 oil companies to keep their oil tanks full. Oil delivery has two parts to it: First, an oil truck picks up oil at the nearest bulk fuel terminal (also known as a “rack”). In the case of Warren, two of the closest terminals are Sunoco in Linden, NJ and Sunoco in Linden, NJ. Then, the truck delivers the #2 heating oil to residences and companies throughout Warren and the surrounding vicinity.

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