entergy louisiana , llc management's financial discussion and analysis 2007 compared to 2006 net revenue consists of operating revenues net of : 1 ) fuel , fuel-related expenses , and gas purchased for resale , 2 ) purchased power expenses , and 3 ) other regulatory charges ( credits ) . following is an analysis of the change in net revenue comparing 2007 to 2006 . amount ( in millions ) .

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Row 1: , amount ( in millions )
Row 2: 2006 net revenue, $ 942.1
Row 3: base revenues, 78.4
Row 4: volume/weather, 37.5
Row 5: transmission revenue, 9.2
Row 6: purchased power capacity, -80.0 ( 80.0 )
Row 7: other, 3.9
Row 8: 2007 net revenue, $ 991.1
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the base revenues variance is primarily due to increases effective september 2006 for the 2005 formula rate plan filing to recover lpsc-approved incremental deferred and ongoing capacity costs . see "state and local rate regulation" below and note 2 to the financial statements for a discussion of the formula rate plan filing . the volume/weather variance is due to increased electricity usage , including electricity sales during the unbilled service period . billed retail electricity usage increased a total of 666 gwh in all sectors compared to 2006 . see "critical accounting estimates" below and note 1 to the financial statements for further discussion of the accounting for unbilled revenues . the transmission revenue variance is primarily due to higher rates . the purchased power capacity variance is primarily due to higher purchased power capacity charges and the amortization of capacity charges effective september 2006 as a result of the formula rate plan filing in may 2006 . a portion of the purchased power capacity costs is offset in base revenues due to a base rate increase implemented to recover incremental deferred and ongoing purchased power capacity charges , as mentioned above . see "state and local rate regulation" below and note 2 to the financial statements for a discussion of the formula rate plan filing . gross operating revenues , fuel , purchased power expenses , and other regulatory charges ( credits ) gross operating revenues increased primarily due to : an increase of $ 143.1 million in fuel cost recovery revenues due to higher fuel rates and usage ; an increase of $ 78.4 million in base revenues , as discussed above ; and an increase of $ 37.5 million related to volume/weather , as discussed above . fuel and purchased power expenses increased primarily due to an increase in net area demand and an increase in deferred fuel expense as a result of higher fuel rates , as discussed above . other regulatory credits decreased primarily due to the deferral of capacity charges in 2006 in addition to the amortization of these capacity charges in 2007 as a result of the may 2006 formula rate plan filing ( for the 2005 test year ) with the lpsc to recover such costs through base rates effective september 2006 . see note 2 to the financial statements for a discussion of the formula rate plan and storm cost recovery filings with the lpsc. .

Question: what is the net change in net revenue during 2007?
Program: subtract(991.1, 942.1)
Answer: 49.0