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REVENUES (Tables)
 12 Months Ended
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The following table presents operating revenues disaggregated by revenue source:
 
For the Year Ended December 31, 2018
Eversource
(Millions of Dollars)
Electric
Distribution
 
Natural Gas
Distribution
 
Electric
Transmission
 
Water Distribution
 
Other
 
Eliminations
 
Total
Revenue from Contracts with Customers
 
 
 
 
 
 
 
 
 
 
 
 
 
Retail Tariff Sales
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential
$
3,766.6

 
$
542.5

 
$
—

 
$
130.7

 
$
—

 
$
—

 
$
4,439.8

Commercial
2,634.7

 
334.8

 
—

 
63.3

 
—

 
(4.5
)
 
3,028.3

Industrial
351.9

 
96.0

 
—

 
4.4

 
—

 
(10.0
)
 
442.3

Total Retail Tariff Sales Revenue
6,753.2

 
973.3

 
—

 
198.4

 
—

 
(14.5
)
 
7,910.4

Wholesale Transmission Revenue
—

 
—

 
1,308.9

 
—

 
47.3

 
(1,092.2
)
 
264.0

Wholesale Market Sales Revenue
179.5

 
57.5

 
—

 
4.1

 
—

 
—

 
241.1

Other Revenue from Contracts with Customers
65.9

 
(2.2
)
 
12.6

 
7.2

 
889.0

 
(891.0
)
 
81.5

Reserve for Revenue Subject to Refund
(12.3
)
 
(8.3
)
 
—

 
(3.7
)
 
—

 
—

 
(24.3
)
Total Revenue from Contracts with Customers
6,986.3

 
1,020.3

 
1,321.5

 
206.0

 
936.3

 
(1,997.7
)
 
8,472.7

Alternative Revenue Programs
(47.0
)
 
(1.2
)
 
(35.2
)
 
5.4

 
—

 
31.9

 
(46.1
)
Other Revenue
17.9

 
3.1

 
—

 
0.6

 
—

 
—

 
21.6

Total Operating Revenues
$
6,957.2

 
$
1,022.2

 
$
1,286.3

 
$
212.0

 
$
936.3

 
$
(1,965.8
)
 
$
8,448.2

 
For the Year Ended December 31, 2018
(Millions of Dollars)
CL&P
 
NSTAR Electric
 
PSNH
Revenue from Contracts with Customers
 
 
 
 
 
Retail Tariff Sales
 
 
 
 
 
Residential
$
1,828.2

 
$
1,380.9

 
$
557.5

Commercial
928.1

 
1,391.5

 
316.9

Industrial
147.7

 
124.9

 
79.3

Total Retail Tariff Sales Revenue
2,904.0

 
2,897.3

 
953.7

Wholesale Transmission Revenue
620.6

 
488.8

 
199.5

Wholesale Market Sales Revenue
48.3

 
76.1

 
56.6

Other Revenue from Contracts with Customers
35.0

 
28.9

 
15.5

Reserve for Revenue Subject to Refund
—

 
—

 
(12.3
)
Total Revenue from Contracts with Customers
3,607.9

 
3,491.1

 
1,213.0

Alternative Revenue Programs
(65.9
)
 
0.9

 
(17.3
)
Other Revenue
8.5

 
8.3

 
1.1

Eliminations
(454.3
)
 
(387.4
)
 
(149.2
)
Total Operating Revenues
$
3,096.2

 
$
3,112.9

 
$
1,047.6