what is the net change in net revenue during 2016 for entergy new orleans , inc?
entergy new orleans , inc . and subsidiaries management 2019s financial discussion and analysis results of operations net income 2016 compared to 2015 net income increased $ 3.9 million primarily due to higher net revenue , partially offset by higher depreciation and amortization expenses , higher interest expense , and lower other income . 2015 compared to 2014 net income increased $ 13.9 million primarily due to lower other operation and maintenance expenses and higher net revenue , partially offset by a higher effective income tax rate . net revenue 2016 compared to 2015 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 . following is an analysis of the change in net revenue comparing 2016 to 2015 . amount ( in millions ) .

|  | Amount (In Millions) |
| :--- | :--- |
| 2015 net revenue | $293.9 |
| Retail electric price | 39.0 |
| Net gas revenue | (2.5) |
| Volume/weather | (5.1) |
| Other | (8.1) |
| 2016 net revenue | $317.2 |

the retail electric price variance is primarily due to an increase in the purchased power and capacity acquisition cost recovery rider , as approved by the city council , effective with the first billing cycle of march 2016 , primarily related to the purchase of power block 1 of the union power station . see note 14 to the financial statements for discussion of the union power station purchase . the net gas revenue variance is primarily due to the effect of less favorable weather on residential and commercial sales . the volume/weather variance is primarily due to a decrease of 112 gwh , or 2% ( 2 % ) , in billed electricity usage , partially offset by the effect of favorable weather on commercial sales and a 2% ( 2 % ) increase in the average number of electric customers. .

net_revenue_2016 = 317.2
net_revenue_2015 = 293.9
net_revenue_change = net_revenue_2016 - net_revenue_2015
answer = net_revenue_change