Table:
Hydroelectric generation in the United States[2][24]

Year

Summer capacity
(GW)

Electricity generation
(TWh)

Capacity factor

Yearly growth of
generating capacity

Yearly growth of
produced energy

Portion of
renewable electricity

Portion of
total electricity

2018

79.89
291.72
0.417
0.12%
-2.7%
40.9%
7.0%

2017

79.79
300.05
0.430
-0.2%
12%
43.7%
7.44%

2016

79.91
267.81
0.383
0.3%
7.50%
43.9%
6.57%

2015

79.66
249.08
0.357
0.56%
-4.0%
45.77%
6.11%

2014

79.24
258.75
0.373
0.05%
-3.66%
47.93%
6.32%

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<table border="1" cellspacing="0">
<tr> <th> Year </th> <th> Summer capacity (GW) </th> <th> Electricity generation (TWh) </th> <th> Capacity factor </th> <th> Yearly growth of generating capacity </th> <th> Yearly growth of produced energy </th> <th> Portion of renewable electricity </th> <th> Portion of total electricity </th></tr>
<tr> <td> 2018 </td> <td> 79.89 </td> <td> 291.72 </td> <td> 0.417 </td> <td> 0.12% </td> <td> 2.7% </td> <td> 40.9% </td> <td> 7.0% </td></tr>
<tr> <td> 2017 </td> <td> 79.79 </td> <td> 300.05 </td> <td> 0.430 </td> <td> 0.2% </td> <td> 12% </td> <td> 43.7% </td> <td> 7.44% </td></tr>
<tr> <td> 2016 </td> <td> 79.91 </td> <td> 267.81 </td> <td> 0.383 </td> <td> 0.3% </td> <td> 7.50% </td> <td> 43.9% </td> <td> 6.57% </td></tr>
<tr> <td> 2015 </td> <td> 79.66 </td> <td> 249.08 </td> <td> 0.357 </td> <td> 0.56% </td> <td> 4.0% </td> <td> 45.77% </td> <td> 6.11% </td></tr>
<tr> <td> 2014 </td> <td> 79.24 </td> <td> 258.75 </td> <td> 0.373 </td> <td> 0.05% </td> <td> 3.66% </td> <td> 47.93% </td> <td> 6.32% </td></tr>
</table>