The short version: three utilities deliver almost all the natural gas in Alberta — ATCO Gas South, ATCO Gas North, and Apex Utilities. Beyond their footprints, more than 80 member-owned rural gas co-ops pipe gas to farms and small communities. You cannot pick your distributor. You can pick the retailer who sells you the gas commodity contract.

The thing most marketing pages skip

Gas marketing tends to focus on the commodity price — the per-gigajoule rate the retailer charges. That number is real, but it is also a smaller share of a typical gas bill than the energy charge is on an electricity bill. The delivery stack — the distributor\'s monthly customer charge plus the variable delivery rate — is usually more than half of an Alberta gas bill in a cold month. Comparing retailers without understanding the delivery half leads to disappointment about how much you can really save.

The three main distributors

ATCO Gas South
Territory

Calgary and southern Alberta

Emergency
1-800-511-3447

The largest distributor by customer count

ATCO Gas North
Territory

Edmonton, central Alberta, and the north

Emergency
1-800-511-3447

Same operator as ATCO Gas South under one corporate umbrella, separate tariff

Apex Utilities (formerly AltaGas Utilities)
Territory

More than 100 rural communities across central and northern Alberta

Emergency
1-866-222-2068

Serves the gaps between the ATCO territories

Tool: which gas distributor serves my address?

Pick the closest match for your area. The right phone numbers and tariff link follow.

Your likely distributor
Emergency line
How you are billed

Confirm by checking the delivery section of your last gas bill — the distributor name is always listed there.

The non-obvious thing about rural gas in Alberta

Alberta is one of very few places in North America where rural natural gas access was built out through farmer-owned cooperatives, not by extending the urban utility. From the 1950s onward, the provincial government supported a co-op model: groups of rural landowners pooled capital, built distribution networks, and self-financed. Many of those co-ops still run today, in parallel with ATCO and Apex.

If you bought a rural property, you may not even be on an ATCO or Apex pipeline — you may be a member-owner of the local gas co-op, which means your bill, your AGM, and your rate vote all look completely different from a city customer\'s experience. The structure is unusual, and it matters for anyone moving to the country.

What this means for your household

  • Confirm your distributor from your bill before doing anything else.
  • Save the emergency number in your phone now — not when you smell gas.
  • If you live in Medicine Hat, you are outside the retail-choice model entirely; the city is both your distributor and your supplier. See our Medicine Hat guide for the specifics.
  • If you are on a rural co-op, your "switch a retailer" decision is different from a city customer\'s. Some co-ops are integrated; others let you pick a retailer for the commodity.

Frequently asked questions

In Calgary and southern Alberta: ATCO Gas South. In Edmonton, central Alberta, and the north: ATCO Gas North. In many rural communities and small towns: Apex Utilities. Smaller pockets are served by municipal franchises or rural gas co-ops. Check your bill — the distributor name appears in the delivery section.
Yes. The company rebranded from AltaGas Utilities to Apex Utilities in recent years. Older bills, mail, and websites may still use the AltaGas name. The territory and operations are unchanged.
Outside ATCO and Apex territory, more than 80 member-owned gas co-ops serve rural Albertans — Pembina West, Three Hills Rural, and dozens of others. They set their own rates through the AUC tariff process. See our separate guide on rural natural gas co-ops.
No. Each distributor files its own tariff with the AUC. Apex rates are typically higher than ATCO rates because the customer density is lower — the same pipe serves fewer homes per kilometre.
Leave the building first. Then call the distributor: ATCO Gas 1-800-511-3447 or Apex Utilities 1-866-222-2068. Both lines run 24/7. Never use a phone, light switch, or any electric device inside a building you suspect of leaking.