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61
Natural Gas Revenues
The following tables summarize the components of the changes in natural gas revenues and margin for the years ended Dec. 31:
(Millions of Dollars)
2010 vs.
2009
Purchased natural gas adjustment clause recovery . ............................. .. .......... ................ $ (100)
Estimated impact of weather ........ .......... .. ...... .. .... ............................................. (8)
Retail sales decrease (excluding weather impact) .. ........................................................ (2)
Conservation and DSM revenue and incentive .. .. .. ................ ...... ................................. 18
Rate increase (Minnesota) . .. .. .. ..... .. .... ......... ... ....... .......................................... 6
Other (including sales mix), net .. .. .. .... ..... ........................................................... 3
Total decrease in natural gas revenues .. ........ .. ................... .... .. ............................. $ (83)
2010 Comparison to 2009 — Natural gas revenues decreased primarily due to lower natural gas costs in 2010, partially offset by
higher conservation and DSM rates.
Natural Gas Margin
(Millions of Dollars)
2010 vs.
2009
Conservation and DSM revenue and incentive (partially offset by expenses) ................................ . $ 18
Rate increase (Minnesota) . .. .. .. ..... .. .... ......... ... ....... .......................................... 6
Estimated impact of weather ........ .......... .. ...... .. .... ............................................. (8)
Retail sales decrease (excluding weather impact) .. ........................................................ (2)
Other, net .............................. .. ....... ....................................................... 6
Total increase in natural gas margin . .. .... ................... .. ........................................ $ 20
2010 Comparison to 2009 — Natural gas margins increased mainly due to higher conservation and DSM rates in 2010.
Natural Gas Revenues
(Millions of Dollars)
2009 vs.
2008
Purchased natural gas adjustment clause recovery . ............................. .. .......... ................ $ (568)
Estimated impact of weather ........ .......... .. ...... .. .... ............................................. (10)
Conservation and DSM revenue and incentive .. .. .. ................ ...... ................................. 6
Other (including sales mix), net .. .. .. .... ..... ........................................................... (5)
Total decrease in natural gas revenues .. ........ .. ................... .... .. ............................. $ (577)
2009 Comparison to 2008 — Natural gas revenues decreased primarily due to lower natural gas costs in 2009, and the estimated
impact of weather.
Natural Gas Margin
(Millions of Dollars)
2009 vs.
2008
Estimated impact of weather ........ .......... .. ...... .. .... ............................................. (10)
Conservation and DSM revenue and incentive (partially offset by expenses) ................................ . 6
Other (including sales mix), net .. .. .. .... ..... ........................................................... (6)
Total decrease in natural gas margin ........ .... .. ...................................................... $ (10)
2009 Comparison to 2008 — Natural gas margins decreased mainly due to milder than normal temperatures.
$