Propane Pricing
Low rates. Transparent pricing. Unmatched Service.
If you've had propane service before, you're probably aware it's next-to-impossible to know what you're truly getting charged until you get your bill. (For more on that, check out our Savings page.)
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As a Member of The Propane Collective you have access to year-round, low rates typically only available to high-volume purchasers. What's more, delivery fees are waived and tank rental rates are the lowest around!
Real-Time Member Pricing
Effective Sept 4: $1.91 residential / $1.82 commercial
Sept 3: $1.87 residential / $1.78 commercial
Aug 15 to Sept 2: $1.84 residential / $1.75 commercial
add .30 for will-call
BEST YEAR-ROUND PRICING
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Lowest year-round rates & fees of any supplier.
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Prices based upon the wholesale rate of propane.
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Prices are published and verifiable through a state agency.
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Price commitment to you is through 2029+.
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You are free to cancel anytime.
VERIFIABLE PRICE STRUCTURE
Step 1. Check the current wholesale rate:
The wholesale rate we use is "Targa-San Francisco."
It is a published government source which you can use to verify your price.**
Step 2. Determine your margin:
​Residential Routed Service:​​
Commercial Routed Service:
Residential Will-Call Service:
+ $ .89 ​
+ $ .80
+ $1.19
Coloma-Lotus Co-op Members receive a .04 discount on these margins.
Step 3. Add the two numbers together to verify your current propane rate:
Example:
If today's wholesale rate is $1 and you are a residential routed customer with a margin of $.89, your rate would be $1.89 per gallon.
* While all attempts are made to accurately post current pricing, errors may occur. Verify real-time pricing directly with InterState Propane or by emailing us.
** There may be up to a week's delay for the Collective's price to correlate with the published SF Targa rate or vise-versa. The differences are typically within a few cents, up or down, in a given week.
SUPPLIER: INTERSTATE PROPANE
Included Services:
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Free Tank Monitoring
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Tank monitor fees are waived and are available for both leased and customer-owned tanks.
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​Remote tank monitors transmit fuel levels to InterState's central monitoring system, allowing for more efficient delivery service.
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Free Installation: Leased Tanks
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At no cost to Members, InterState will install its tank and equipment, pump over fuel from your existing tank if requested, and set the current tank aside.*
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Equipment includes updated regulators (up to 2), copper connections and concrete blocks.
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​​​​​Fuel transfer service is at InterState's discretion.
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Before initiating service, your current tank should be at or below 30%.
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Free Leak Test: Customer-Owned Tanks
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A​t no cost to Members, a leak test will be conducted prior to start of service.
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Leak tests are required for all Customer-Owned Tanks (COTs.)
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Member must be present when this test is completed.
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Any required repairs to COT tank connections, regulators, etc. are the responsibility of the owner, unless equipment was installed by InterState and is under warranty.
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FEES AND TERMS:
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Delivery Fees
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Routed service:
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$0 delivery fees
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Will-call service:
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​$10.95 delivery fee (subject to change in line with standard InterState delivery fees.)
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100-gallon minimum delivery
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10+ business days notice required.
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NOTE: ​Members may not change back & forth between will-call and routed. Once a Member requests will-call service, they must stay on that rate. Any exceptions need management approval.
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Tank Lease Fee
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Tanks under 494 Gallons = $35 per year (compare at $60 - $140 per year!)
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Tanks 495 to 600 Gallons = $50 per year (compare at $90 - $150 per year!)
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Generator tanks = $150 per year; see below for details.
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Minimum Usage - Leased Tanks Only
Like many suppliers, InterState requires customers with leased tanks use a certain amount of propane per year. Minimum usage requirements help to ensure InterState doesn't lose money on the highly discounted terms it has extended our Members.
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Tanks under 494 gallons need to use a minimum of 300 gallons per calendar year.
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Tanks 494 gallons and over need to use a minimum of 500 gallons per calendar year.
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​​​Minimum usage requirements begin with your first full calendar year of usage, i.e. if you become a member in 2024, the requirement will begin 1/1/2025.
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If minimum use levels are not met, customers will be charged their margin rate multiplied by the shortage of gallons needed to meet the minimum usage requirement.​​ Maximum fee of $150.
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EXAMPLE: RESIDENTIAL ROUTED CUSTOMER
250-gallon lesed tank; 200 gallons / year usage
​Usage requirement:
Subtract actual usage:
Equals Shortfall:
Multiply by Margin:
Total minimum usage fee:
300 gallons
- 200 gallons​
= 100 gallons
x .89
= $89 fee for calendar year.
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Leased Generator Tanks
Tanks used specifically for generators typically experience sporadic usage. Consequently, leased generator tanks could incur the minimum usage fees described above.​ To decrease this possibility, InterState ​suggests Customers connect their generator directly to their main tank. Interstate may assist with this project as follows:
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​​Interstate will, at its discretion, cover the cost of the labor required to connect the generator to the customer’s main (leased) tank, up to 100’ in pipe length.
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​​Customers will be charged for required parts. Depending on the length of piping the cost could run approximately $250 to $350.
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The trench must be provided by the Customer: minimum of 18” deep, maximum of 32” deep. (This is not recommended for runs over 100’.)
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Customers may want to upsize their main tank from a 250-gallon tank to a 500-gallon tank.
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Underground Tanks
InterState Propane does not lease or install underground tanks, but will service them upon request.
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​Cathodic protection test: $125 (required annually by State of CA.)​
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Anode bags if needed; prices vary. (Currently ~$450 plus installation at $125/hour.
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ELIGIBILITY:
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Commercial Rate - 750 gallons / year minimum usage
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The commercial rate is available to businesses InterState Propane services which use a minimum 750 gallons per year. This rate is also available to residential home-based businesses that meet the following additional criteria:
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There is a separate structure on your property utilized solely for business purposes.
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You are in possession of a valid business license and/or are registered non-profit or agricultural operation.
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Businesses which don't meet the 750-gallon criteria are eligible for the residential rate, subject to a lower annual minimum usage, as defined above.​
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InterState Credit & Payment
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Members must submit a credit application to InterState Propane and complete required paperwork. ​​If credit is approved, accounts are given net 30-day terms from the date of delivery. Payment may be made by check, credit or debit card.
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If credit is not approved, Members have two options to receive Routed service/rates:
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Sign up for EFT (electronic funds transfer.) Funds will be removed from your designated bank account 1 to 5 days after delivery.
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Place a deposit payment on your account 1.5x the size of your tank.
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​250-gallon tank: $375 deposit
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500-gallon tank: $750 deposit
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Any remaining balance must be paid before next delivery is made.​
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PROPANE COLLECTIVE / INTERSTATE CONTRACT
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InterState Propane has made a minimum 5-year commitment to The Propane Collective.
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Members are NOT committed to the 5-year period. If you are unhappy with the pricing or service you are free to end your service at any time.
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There are no early-termination penalties, however membership fees are non-refundable unless service is declined by InterState.
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The propane price margins are fixed through 12/31/25.
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​Beginning 1/1/26 our margin may be slightly adjusted each year to reflect changing conditions:
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Our margin may be decreased if we grow the Collective beyond initial projections.
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Our margin may be increased if business conditions change.
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The margin will not adjust more than 5 cents per year within our 5-year contract period.​
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Both TPC and InterState must provide rational for, and jointly agree to, any price increases/decreases within our 5-year contract period ending 2029.
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Our contract is tied to the "TARGA - San Francisco" propane wholesale rate, which can be found at the California Department of General Services (DGS).
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Targa's rates may change daily, but only weekly updates are available to the general public. Due to this lag in real-time updating, the amount you're charged may differ slightly from the amount posted on the DGS website, up or down. In addition,
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September to February: Our pricing is based upon Targa's real-time pricing, which as explained above may not be reflected in the DGS publication until the following week.
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March thru August: Our pricing is tied to real-time SF Targa rates + 7 days. This 7-day delay was a necessary concession for InterState to agree to use SF Targa as our margin benchmark.
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Call InterState propane or email janet@propanecollective.com at any time to verify pricing.