Table 4.10. Net Metering Customers and Capacity by Technology Type, by End Use Sector,
2009 through 2019

  Capacity (MW) Customers
Year Residential Commercial Industrial Transportation Total Residential Commercial Industrial Transportation Total
Historical Data
2009 N/A N/A N/A N/A N/A 88,205 7,365 919 -- 96,489
Photovoltaic
2010 697.890 517.861 243.051 -- 1,458.802 137,618 11,897 1,225 -- 150,740
2011 1,024.139 1,089.275 381.670 -- 2,495.410 198,255 18,345 2,418 -- 219,018
2012 1,542.226 1,741.821 395.328 -- 3,679.630 294,437 27,611 1,317 -- 323,365
2013 2,286.567 2,294.831 565.982 -- 5,147.380 442,195 35,379 2,480 -- 480,054
2014 3,452.987 2,933.122 710.719 -- 7,096.828 642,276 43,335 3,131 -- 688,742
2015 5,357.358 3,455.124 884.664 -- 9,697.146 958,850 51,501 3,624 -- 1,013,975
2016 7,487.643 3,975.813 1,078.607 -- 12,542.064 1,321,277 60,456 4,391 -- 1,386,124
2017 9,486.987 5,119.870 1,197.785 -- 15,804.641 1,626,283 69,538 5,267 -- 1,701,088
2018 11,356.711 6,173.324 1,378.863 -- 18,908.896 1,911,892 78,912 5,844 -- 1,996,648
2019 13,863.288 7,181.594 1,613.248 -- 22,658.129 2,283,702 86,552 6,499 -- 2,376,753
Storage
2016 4.489 7.575 11.698 -- 23.762 793 79 31 -- 903
2017 13.276 15.356 12.328 -- 40.960 2,316 137 34 -- 2,487
2018 65.199 40.141 24.526 -- 129.866 10,633 303 61 -- 10,997
2019 153.282 48.397 40.441 -- 242.120 24,007 427 93 -- 24,527
Virtual PV (1 MW and over)
2016 15.171 194.318 -- -- 209.489 5,193 322 -- -- 5,515
2017 11.115 287.440 2.000 -- 300.555 3,611 535 2 -- 4,148
2018 19.719 360.749 2.603 -- 383.071 6,045 2,037 17 -- 8,099
2019 19.883 401.179 4.212 -- 425.274 5,939 2,164 22 -- 8,125
Virtual PV (under 1 MW)
2016 27.482 73.116 3.168 -- 103.766 8,705 1,506 11 -- 10,222
2017 42.005 129.547 5.136 -- 176.689 11,337 2,372 17 -- 13,726
2018 49.232 163.228 5.466 -- 217.926 13,071 2,959 16 -- 16,046
2019 57.609 223.409 6.472 -- 287.489 14,814 3,744 18 -- 18,576
Wind
2010 83.797 26.106 6.392 -- 116.295 3,467 583 37 -- 4,087
2011 28.063 44.373 9.932 -- 82.368 4,456 905 50 -- 5,411
2012 33.484 74.620 17.495 -- 125.599 4,796 1,143 48 -- 5,987
2013 38.987 92.818 14.659 -- 146.464 5,265 1,308 92 -- 6,665
2014 37.918 101.622 25.426 -- 164.966 5,379 1,351 94 -- 6,824
2015 34.893 103.086 29.137 -- 167.116 5,387 1,434 109 -- 6,930
2016 37.030 108.726 41.454 -- 187.210 5,759 1,470 113 -- 7,342
2017 35.005 119.651 49.507 -- 204.163 5,258 1,429 111 -- 6,798
2018 33.625 133.856 52.386 -- 219.867 5,368 1,452 110 -- 6,930
2019 33.668 148.594 52.580 -- 234.842 5,218 1,438 107 -- 6,763
Other
2010 11.455 34.752 24.835 -- 71.042 767 271 56 -- 1,094
2011 5.030 49.010 56.681 -- 110.721 807 242 100 -- 1,149
2012 7.539 65.821 83.170 -- 156.530 862 314 122 -- 1,298
2013 6.785 80.405 80.568 -- 167.758 598 331 169 -- 1,098
2014 7.633 102.797 98.277 -- 208.707 857 397 201 -- 1,455
2015 7.873 116.382 116.780 -- 241.035 821 445 249 -- 1,515
2016 7.952 155.889 149.608 -- 313.449 862 592 325 -- 1,779
2017 9.064 208.639 199.398 -- 417.101 915 693 330 -- 1,938
2018 6.351 258.601 241.416 -- 506.368 692 826 347 -- 1,865
2019 23.364 254.281 263.966 -- 541.611 2,226 842 381 -- 3,449
All Technologies
2010 793.142 578.719 274.278 -- 1,646.139 141,852 12,751 1,318 -- 155,921
2011 1,057.232 1,182.658 448.283 -- 2,688.173 203,518 19,492 2,568 -- 225,578
2012 1,583.249 1,882.262 495.993 -- 3,961.504 300,095 29,068 1,487 -- 330,650
2013 2,332.339 2,468.054 661.209 -- 5,461.602 448,058 37,018 2,741 -- 487,817
2014 3,498.538 3,137.541 834.422 -- 7,470.501 648,512 45,083 3,426 -- 697,021
2015 5,400.124 3,674.592 1,030.581 -- 10,105.297 965,058 53,380 3,982 -- 1,022,420
2016 7,715.715 4,576.384 1,289.946 -- 13,582.045 1,341,796 64,346 4,840 -- 1,410,982
2017 9,584.177 5,865.147 1,453.826 -- 16,903.148 1,647,404 74,567 5,727 -- 1,727,698
2018 11,465.638 7,089.758 1,680.734 -- 20,236.128 1,937,068 86,186 6,334 -- 2,029,588
2019 13,997.811 8,209.056 1,940.478 -- 24,147.345 2,311,899 94,740 7,027 -- 2,413,666

N/A = Not Available.
Total customer count for the years 2007, 2009, and 2010 were revised based on requests from respondents.
Capacity and customer count was not collected by technology type before 2010.
Starting in 2013, there is no maximum capacity on installed units.
Starting in 2016, utilities have the option to report photovoltaic in DC or AC. Values have been converted to AC.
Source: U.S. Energy Information Administration, Form EIA-861, "Annual Electric Power Industry Report."