WEATHER NORMALIZATION ADJUSTMENT (WNA) FOR RESIDENTIAL AND GENERAL SERVICE CUSTOMERS

On April 11, 2024, in Case 23-0280-G-42T, the Public Service Commission of West Virginia (PSC) approved a Weather Normalization Adjustment (WNA) as a five-year pilot program for service rendered to residential and general service customers from October 1 to May 31. A WNA is a billing method used to adjust for differences between “normal” (or expected) weather and “abnormal” (or unexpected) weather in the base rate charge portion of the customer bill; the WNA does not apply to the purchased gas cost rate or the Infrastructure Replacement and Expansion Program (IREP) rate.

A Weather Normalization Adjustment will be applied under the following circumstances:

  • If temperatures are more than two (2) percent colder than normal during the WNA billing period, customers will receive a credit on their bill.
  • If temperatures are more than two (2) percent warmer than normal during the WNA billing period, customers will receive a surcharge on their bill.
  • If temperatures are within two (2) percent of normal weather during the WNA billing period, the WNA amount will be zero and ‘0.00’ will be shown on the bill.

EXAMPLE OF A WARMER THAN NORMAL BILL FOR A RESIDENTIAL CUSTOMER

Line Calculation
1 Billing Period:
2 From (day after previous read date): 11/16/2024
3 To (current month read date): 12/15/2024
4 Deadband / Temperature Threshold: 2%
5 Normal Heating Degree Days (NHDD): 732
6 NHDD Adjusted for Deadband (NHDD x 98%) 717
7 Actual Heating Degree Days (AHDD): 667
8 WNA Factor Line 6 ÷ Line 7 1.07496
9 Number of Days in Billing Period 30
10 Average Daily Base Load in Mcfs: 0.00000
11 Base Load Monthly Mcfs (BLMM): Line 9 x Line 10 0.00
12 Actual Monthly Mcfs (AMM) Consumption: 6.00
13 Weather Normalized Billing Mcfs (WNBM): Line 11 + (Line 8 x (Line 12 - Line 11)) 6.45
14 Weather Normalized Adjustment Mcf (WNAM): Line 13 - Line 12 0.45
15 Base Rate Charge per Mcf: $ 4.929
16 Weather Normalization Adjustment (WNA): Line 14 x Line 15 $ 2.22

EXAMPLE OF A COLDER THAN NORMAL BILL FOR A RESIDENTIAL CUSTOMER

Line Calculation
1 Billing Period:
2 From (day after previous read date): 12/16/2024
3 To (current month read date): 1/15/2025
4 Deadband / Temperature Threshold: 2%
5 Normal Heating Degree Days (NHDD): 887
6 NHDD Adjusted for Deadband (NHDD x 102%) 905
7 Actual Heating Degree Days (AHDD): 1,000
8 WNA Factor Line 6 ÷ Line 7 0.90500
9 Number of Days in Billing Period 31
10 Average Daily Base Load in Mcfs: 0.00000
11 Base Load Monthly Mcfs (BLMM): Line 9 x Line 10 0.00
12 Actual Monthly Mcfs (AMM) Consumption: 14.00
13 Weather Normalized Billing Mcfs (WNBM): Line 11 + (Line 8 x (Line 12 - Line 11)) 12.67
14 Weather Normalized Adjustment Mcf (WNAM): Line 13 - Line 12 (1.33)
15 Base Rate Charge per Mcf: $ 4.929
16 Weather Normalization Adjustment (WNA): Line 14 x Line 15 $ (6.56)

EXAMPLE OF A WARMER THAN NORMAL BILL FOR A GENERAL SERVICE CUSTOMER

Line Calculation
1 Billing Period:
2 From (day after previous read date): 11/16/2024
3 To (current month read date): 12/15/2024
4 Deadband / Temperature Threshold: 2%
5 Normal Heating Degree Days (NHDD): 732
6 NHDD Adjusted for Deadband (NHDD x 98%) 717
7 Actual Heating Degree Days (AHDD): 667
8 WNA Factor Line 6 ÷ Line 7 1.07496
9 Number of Days in Billing Period 30
10 Average Daily Base Load in Mcfs: 0.10000
11 Base Load Monthly Mcfs (BLMM): Line 9 x Line 10 3.00
12 Actual Monthly Mcfs (AMM) Consumption: 50.00
13 Weather Normalized Billing Mcfs (WNBM): Line 11 + (Line 8 x (Line 12 - Line 11)) 53.52
14 Weather Normalized Adjustment Mcf (WNAM): Line 13 - Line 12 3.52
15 Base Rate Charge per Mcf: $ 3.423
16 Weather Normalization Adjustment (WNA): Line 14 x Line 15 $ 12.05

EXAMPLE OF A COLDER THAN NORMAL BILL FOR A GENERAL SERVICE CUSTOMER

Line Calculation
1 Billing Period:
2 From (day after previous read date): 12/16/2024
3 To (current month read date): 1/15/2025
4 Deadband / Temperature Threshold: 2%
5 Normal Heating Degree Days (NHDD): 887
6 NHDD Adjusted for Deadband (NHDD x 102%) 905
7 Actual Heating Degree Days (AHDD): 1,000
8 WNA Factor Line 6 ÷ Line 7 0.90500
9 Number of Days in Billing Period 31
10 Average Daily Base Load in Mcfs: 0.10000
11 Base Load Monthly Mcfs (BLMM): Line 9 x Line 10 3.10
12 Actual Monthly Mcfs (AMM) Consumption: 80.00
13 Weather Normalized Billing Mcfs (WNBM): Line 11 + (Line 8 x (Line 12 - Line 11)) 72.69
14 Weather Normalized Adjustment Mcf (WNAM): Line 13 - Line 12 (7.31)
15 Base Rate Charge per Mcf: $ 3.423
16 Weather Normalization Adjustment (WNA): Line 14 x Line 15 $ (25.02)

CLICK HERE to learn how to read your bill

FREQUENTLY ASKED QUESTIONS

WNA EXAMPLES:

Residential Service:

Warmer Than Normal
Colder Than Normal

General Service:

Warmer Than Normal
Colder Than Normal
Customer Service
Make a Payment
View My Bill
Customer Termination Rights
Gas Emergency
1.800.834.2070 or 911
Service Questions
1.800.834.2070