Operational - Quarterly Summary

 

Q3
2021
Q2 2021 Q1
2021
Q4
2020
Q3
2020

Utilities

         
Natural gas deliveries – end use (Bcf) (1) 12.2 22.4 72.6 50.0 14.2
Natural gas deliveries – transportation (Bcf) (1) 21.4 25.3 43.1 35.6 28.3
Service sites (thousands) (2) 1,676 1,673 1,675 1,672 1,667
Degree day variance from normal – SEMCO Gas (%) (3) (41.8) (5.6) (6.2) (4.4) 1.8
Degree day variance from normal – ENSTAR (%) (3) 16.9 9.0 9.7 0.2 (13.3)
Degree day variance from normal – Washington Gas (%) (3) (4) - 20.8 (7.1) (10.6) 233.0
WGL retail energy marketing – gas sales volumes (Mmcf) 7,682 9,887 24,696 18,053 8,393
WGL retail energy marketing – electricity sales volumes (GWh) 3,738 3,201 3,249 3,257 3,688

Midstream

         
RIPET export volumes (Bbls/d) (5) 58,056 44,973 50,714 37,782 42,736
Ferndale export volumes (Bbls/d) (5) (6) 47,014 45,133 34,750 33,979 -
Total inlet gas processed (Mmcf/d) (5) 1,471 1,460 1,526 1,409 1,328
Extracted ethane volumes (Bbls/d) (5) 22,938 28,867 33,138 30,766 24,681
Extracted NGL volumes (Bbls/d) (5) (7) 34,671 37,070 38,026 34,199 32,165
Fractionation volumes (Bbls/d) (5) 29,130 27,900 28,591 27,026 25,430
Frac spread – realized ($/Bbl) (5) (8) 12.63 11.59 14.69 13.95 15.90
Frac spread – average spot price ($/Bbl) (5) (9) 36.32 20.54 24.35 9.33 7.11
Propane Far East Index (FEI) to Mont Belvieu spread (US$/Bbl) (5) (10) 9.00 8.98 10.14 15.01 8.00
Butane FEI to Mont Belvieu spread (US$/Bbl) (5) (11) 8.79 10.0 12.74 12.84 -
Natural gas optimization inventory (Bcf) 2.6 1.3 23.9 39.3 51.1

Notes:

(1) Bcf is one billion cubic feet.
(2) Service sites reflect all of the service sites of the utilities, including transportation and non‑regulated business lines.
(3) A degree day is a measure of coldness determined daily as the number of degrees the average temperature during the day in question is below 65 degrees Fahrenheit. Degree days for a particular period are determined by adding the degree days incurred during each day of the period. Normal degree days for a particular period are the average of degree days during the prior 15 years for SEMCO Gas, during the prior 10 years for ENSTAR, and during the prior 30 years for Washington Gas. 
(4) In certain of Washington Gas’ jurisdictions (Virginia and Maryland) there are billing mechanisms in place which are designed to eliminate the effects of variance in customer usage caused by weather and other factors such as conservation. In the District of Columbia, there is no weather normalization billing mechanism nor does Washington Gas hedge to offset the effects of weather. As a result, colder or warmer weather will result in variances to financial results.
(5) Average for the period.
(6) Represents propane and butane volumes exported at Ferndale for the period after close of the Petrogas Acquisition on December 15, 2020.
(7) NGL volumes refer to propane, butane and condensate.
(8) Realized frac spread or NGL margin, expressed in dollars per barrel of NGL, is derived from sales recorded by the segment during the period for frac spread exposed volumes plus the settlement value of frac hedges settled in the period less extraction premiums, divided by the total frac exposed volumes produced during the period.
(9) Average spot frac spread or NGL margin, expressed in dollars per barrel of NGL, is indicative of the average sales price that AltaGas receives for propane, butane and condensate less extraction premiums, before accounting for hedges, divided by the respective frac spread exposed volumes for the period.​​​​​​​
(10) Average propane price spread between FEI and Mont Belvieu TET commercial index.​​​​​​​
(11) Average butane price spread between FEI and Mont Belvieu TET commercial index.