Operational - Quarterly Summary

 

Q4
2020
Q3
2020
Q2
2020
Q1
2020
Q4
2019

Utilities

         
Natural gas deliveries – end use (Bcf) (1) 50.0 14.2 23.1 66.6 52.2
Natural gas deliveries – transportation (Bcf) (1) 35.6 28.3 24.1 40.5 38.3
Service sites (thousands) (2) 1,672 1,667 1,664 1,661 1,653
Degree day variance from normal – SEMCO Gas (%) (3) (4.4) 1.8 20.2 (11.4) 4.3
Degree day variance from normal – ENSTAR (%) (3) 0.2 (13.3) 0.5 16.1 (20.6)
Degree day variance from normal – Washington Gas (%) (3) (4) (10.6) 233.0 45.6 (17.1) (3.2)
WGL retail energy marketing – gas sales volumes (Mmcf) 18,053 8,393 11,419 21,916 20,131
WGL retail energy marketing – electricity sales volumes (GWh) 3,257 3,688 3,151 3,511 3,291

Midstream

         
RIPET export volumes (Bbls/d) (5) (6) 37,782 42,736 41,460 35,141 36,394
Ferndale export volumes (Bbls/d) (5) (7) 33,979 - - - -
Total inlet gas processed (Mmcf/d) (5) 1,409 1,328 1,300 1,393 1,413
Extracted ethane volumes (Bbls/d) (5) 30,766 24,681 26,699 29,932 25,951
Extracted NGL volumes (Bbls/d) (5) (8) 34,199 32,165 29,946 32,495 32,313
Fractionation volumes (Bbls/d) (5) 27,026 25,430 20,641 21,079 20,310
Frac spread – realized ($/Bbl) (5) (9) 13.95 15.90 16.61 11.76 16.54
Frac spread – average spot price ($/Bbl) (5) (10) 9.33 7.11 3.73 2.04 8.29
Propane Far East Index to Mont Belvieu spread (US$/Bbl) (11) 15.01 8.00 8.08 16.23 17.95
Natural gas optimization inventory (Bcf) 39.3 51.1 49.1 34.3 41.4

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 volumes exported at RIPET since facility was placed into service in May 2019.
(7) Represents propane and butane volumes exported at Ferndale for the period after close of the Petrogas Acquisition on December 15, 2020.
(8) NGL volumes refer to propane, butane and condensate.
(9) 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 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.
(10) 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 exposed volumes for the period.
(11) Average propane price spread between FEI and Mont Belvieu TET commercial index for the period beginning May 2019.