Southwest Gas adjusts rates to reflect changes in the Gas Cost rate for Nevada customers on a quarterly basis. The rate is composed of the Base Tariff Energy Rate (BTER) and the Deferred Energy Account Adjustment (DEAA). This rate is updated to account for changes in the cost of natural gas the Company purchased on behalf of customers, with no profit to the Company, and uses a rolling 12-month average of natural gas costs.
The Company makes these quarterly advice letter filings in February, May, August, and November. Copies of Nevada Advice Letters can be found
here
.
Southwest Gas’ most recent Nevada Quarterly Gas Cost Rate Adjustment filing was made on May 20, 2025 to account for the natural gas costs purchased by the Company between April 2024 and March 2025. The updated Gas Cost rate will be effective July 1, 2025.
The average monthly natural gas bill for Nevada customers is expected to decrease for southern Nevada customers by $13.65 (24.2%) compared to last quarter, and by $22.26 (26.6%) for northern Nevada customers. The estimated bill for an average southern or northern Nevada residential customer is shown in the table below.
| Annual Average1 | Summer Average2 | Winter Average3 | |
| Southern Nevada | $42.69 | $25.45 | $59.93 |
| Northern Nevada | $61.24 | $29.38 | $93.10 |
The estimated bills shown in the table above are based on the following average residential customer monthly usage. Your actual bill may be higher or lower depending on your specific usage.
1 Southern Nevada: 37 therms and Northern Nevada: 57 therms (July through June)
2 Southern Nevada: 17 therms and Northern Nevada: 21 therms (May through October)
3 Southern Nevada: 57 therms and Northern Nevada: 93 therms (November through March)
2 Southern Nevada: 17 therms and Northern Nevada: 21 therms (May through October)
3 Southern Nevada: 57 therms and Northern Nevada: 93 therms (November through March)
