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Washington Propane Prices (March 2026)

The average propane price in Washington is $1.68 per gallon as of March 2026. This is according to US EIA estimates.

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Estimated propane cost by tank size in Washington

Size of Tank Cost to Fill
100 gallons $135
250 gallons $337
500 gallons $673
750 gallons $1,010
1000 gallons $1,346

The cost of filling up propane tanks varies depending on their sizes. For instance, filling up a 100-gallon propane tank costs $135. The price escalates for larger tanks, with a 250-gallon tank costing $337 to fill, and a 500-gallon tank costing $673. For extremely large tanks, the price increases further. A 750-gallon propane tank costs $1,010 to fill, while it costs $1,346 to fill a 1,000-gallon propane tank.

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What is the cheapest month to buy propane gas in Washington?

The price of propane gas can fluctuate depending on several factors such as weather and supply-demand balance. However, as with most energy sources, the cost of propane is usually lower during the warmer months, typically between April and October, when the demand is lower. In Washington, you might find the cheapest prices around late summer or early fall. But it's important to note that prices can change due to unforeseen circumstances like supply disruptions, so it's advised to monitor the market and plan your purchases. Exact costs can also vary based on your specific location within Washington.

What is the difference between an above ground and below ground propane tank?

An above ground propane tank is installed on the surface level of your property and is often utilized where the ground is not suitable for burying a tank or for temporary uses. They are visible and can become a major part of the landscape in your yard. On the other hand, a below ground propane tank is buried beneath the ground and only the lid or dome is visible, which is generally painted green to blend in with the landscape. These tanks are great for homeowners who do not want to see their propane tanks or have space constraints on their property.

What is the cost of a 250 gallon propane gas tank in Washington?

The cost of a 250 gallon propane gas tank in Washington can vary greatly depending on the supplier and current market prices for propane. As of now, there is no fixed price available online as it changes regularly. It would be best to reach out directly to local suppliers for the most current and accurate pricing information. Prices could range from a couple of hundreds to over a thousand dollars depending on whether the tank is new, used or if you're only looking for a refill.

What is the average cost of propane gas in Washington?

The average cost of propane gas in Washington can vary significantly based on global energy costs, local competition, and supply and demand. As of 2021, the average cost ranges from $2.40 to $3.00 per gallon. However, these prices are subject to change, so it is recommended to check a reliable source or your local propane supplier for the most up-to-date information.

Will propane gas get more expensive in Washington?

As an AI, I don't have real-time access to data or the ability to predict future events or changes in market price for commodities such as propane gas. The price of propane gas depends on a variety of factors, including supply and demand, weather conditions, and geopolitical events. It's best to monitor local news, government energy data, or talk to a propane supplier in Washington for the most accurate and up-to-date information.

Is propane gas cheaper than natural gas in Washington?

As of the current market trends, it is generally not cheaper to use propane gas compared to natural gas in Washington. Natural gas is usually less expensive than propane because it is a direct by-product of fossil fuel extraction and requires less processing. However, cost can depend on number of factors such as location, use, the market prices which may vary. Hence, it's recommended to stay updated with current market prices or reach out to local suppliers for the most accurate information.

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