Natural Gas
Therm
A unit of natural gas energy equal to 100,000 BTU, used for commercial gas billing.
Definition
A therm is a unit of heat energy equal to 100,000 British Thermal Units (BTU), the standard unit for measuring commercial natural gas usage.
Detailed explanation
Natural gas contracts and qualification thresholds are frequently expressed in annual therms (for example, a 50,000-therm minimum). One therm is roughly the energy in about 100 cubic feet of natural gas.
Why it matters
Many gas procurement programs have therm-based eligibility requirements, so knowing your annual therms determines which options are available to you.
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