Investor-Owned Utilities' Electricity Distribution Lines Summarized by County
as of June 2021
| County |
% of County's Power Lines Underground or Covered |
# of Fire Incidents |
Total Miles - Underground |
% of Power Lines - Underground |
Total Miles - Covered |
% of Power Lines - Covered |
Total Miles - Bare |
% of Power Lines - Bare |
Total Miles - Other |
% of Power Lines - Other |
Total Miles - Unknown |
% of Power Lines - Unknown |
| Alameda |
52.79% |
62 |
4,420 |
52.65% |
12.09 |
0.14% |
2,983 |
35.54% |
42.74 |
0.51% |
937.4 |
11.17% |
| Alpine |
86.39% |
0 |
28.05 |
86.39% |
0 |
0% |
4.095 |
12.61% |
0.2977 |
0.92% |
0.02861 |
0.09% |
| Amador |
14.09% |
23 |
143.7 |
12.54% |
17.66 |
1.54% |
918.2 |
80.18% |
41.39 |
3.61% |
24.29 |
2.12% |
| Butte |
23.36% |
123 |
814.1 |
21.18% |
83.93 |
2.18% |
2,727 |
70.94% |
118.2 |
3.08% |
100.6 |
2.62% |
| Calaveras |
12.4% |
35 |
214.3 |
12.25% |
2.61 |
0.15% |
1,424 |
81.44% |
68.75 |
3.93% |
38.86 |
2.22% |
| Colusa |
6.38% |
30 |
72.97 |
6.38% |
0 |
0% |
1,040 |
90.92% |
23.03 |
2.01% |
7.838 |
0.69% |
| Contra Costa |
59.13% |
88 |
4,892 |
58.89% |
19.81 |
0.24% |
2,588 |
31.15% |
47.79 |
0.58% |
759.7 |
9.14% |
| Del Norte |
32.55% |
0 |
141.1 |
28.87% |
17.94 |
3.67% |
0 |
0% |
73.44 |
15.03% |
256.1 |
52.42% |
| El Dorado |
26.07% |
78 |
814.9 |
24.61% |
48.54 |
1.47% |
2,308 |
69.68% |
113.8 |
3.44% |
26.89 |
0.81% |
| Fresno |
28.35% |
180 |
3,640 |
28.14% |
27 |
0.21% |
8,285 |
64.05% |
348.4 |
2.69% |
635 |
4.91% |
| Glenn |
5.11% |
29 |
68.44 |
5.11% |
0 |
0% |
1,215 |
90.73% |
36.94 |
2.76% |
18.79 |
1.4% |
| Humboldt |
14% |
79 |
323.5 |
13.37% |
15.24 |
0.63% |
1,967 |
81.26% |
65.52 |
2.71% |
49.27 |
2.04% |
| Imperial |
6.13% |
0 |
2.554 |
6.13% |
0 |
0% |
27.78 |
66.67% |
0.03831 |
0.09% |
11.29 |
27.11% |
| Inyo |
15.13% |
2 |
81.05 |
15.13% |
0 |
0% |
254.1 |
47.43% |
1.323 |
0.25% |
199.2 |
37.18% |
| Kern |
27.23% |
173 |
3,297 |
27.23% |
0 |
0% |
6,996 |
57.78% |
130.4 |
1.08% |
1,685 |
13.92% |
| Kings |
20.44% |
49 |
534.9 |
20.44% |
0 |
0% |
1,808 |
69.07% |
72.4 |
2.77% |
202 |
7.72% |
| Lake |
9.07% |
44 |
114.3 |
7.66% |
21.08 |
1.41% |
1,246 |
83.51% |
40.56 |
2.72% |
70.2 |
4.7% |
| Lassen |
1.98% |
0 |
2.358 |
1.98% |
0 |
0% |
113.4 |
95.25% |
1.834 |
1.54% |
1.456 |
1.22% |
| Los Angeles |
38.14% |
230 |
13,459 |
38.14% |
0 |
0% |
8,613 |
24.4% |
42.76 |
0.12% |
13,178 |
37.34% |
| Madera |
11.57% |
86 |
445.6 |
11.54% |
1.459 |
0.04% |
3,230 |
83.63% |
107.9 |
2.79% |
77.25 |
2% |
| Marin |
36.88% |
39 |
852.4 |
36.05% |
19.73 |
0.83% |
1,015 |
42.93% |
48.01 |
2.03% |
429.4 |
18.16% |
| Mariposa |
4.56% |
21 |
42.73 |
4.18% |
3.863 |
0.38% |
936.7 |
91.63% |
23.85 |
2.33% |
15.08 |
1.47% |
| Mendocino |
9.12% |
64 |
203.6 |
8.63% |
11.43 |
0.48% |
2,080 |
88.24% |
43.65 |
1.85% |
18.69 |
0.79% |
| Merced |
17.01% |
92 |
658 |
17.01% |
0 |
0% |
3,024 |
78.17% |
112.6 |
2.91% |
73.85 |
1.91% |
| Modoc |
5.89% |
0 |
24 |
5.89% |
0 |
0% |
0 |
0% |
102.1 |
25.04% |
281.6 |
69.07% |
| Mono |
35.45% |
5 |
199.7 |
35.45% |
0 |
0% |
200.8 |
35.63% |
0.555 |
0.1% |
162.4 |
28.82% |
| Monterey |
29.21% |
88 |
1,398 |
28.97% |
11.47 |
0.24% |
2,864 |
59.36% |
103.2 |
2.14% |
448.3 |
9.29% |
| Napa |
33.14% |
40 |
575.5 |
29.35% |
74.23 |
3.79% |
1,143 |
58.29% |
32.55 |
1.66% |
135.6 |
6.91% |
| Nevada |
15.73% |
60 |
267.3 |
13.84% |
36.43 |
1.89% |
1,514 |
78.39% |
68.9 |
3.57% |
44.74 |
2.32% |
| Orange |
65.15% |
50 |
11,343 |
65.15% |
0 |
0% |
2,253 |
12.94% |
10.75 |
0.06% |
3,803 |
21.84% |
| Placer |
40.33% |
92 |
1,362 |
40.15% |
6.132 |
0.18% |
1,908 |
56.23% |
69.97 |
2.06% |
46.98 |
1.38% |
| Plumas |
27.69% |
3 |
154.8 |
27.38% |
1.756 |
0.31% |
373.9 |
66.15% |
16.62 |
2.94% |
18.16 |
3.21% |
| Riverside |
65.73% |
91 |
11,778 |
65.73% |
0 |
0% |
3,432 |
19.15% |
79.27 |
0.44% |
2,628 |
14.67% |
| Sacramento |
5.45% |
11 |
12.06 |
5.42% |
0.06405 |
0.03% |
202.2 |
90.98% |
5.617 |
2.53% |
2.306 |
1.04% |
| San Benito |
25.36% |
22 |
280.9 |
25.27% |
1.029 |
0.09% |
756.8 |
68.08% |
20.61 |
1.85% |
52.3 |
4.7% |
| San Bernardino |
42.45% |
117 |
9,247 |
42.45% |
0 |
0% |
6,577 |
30.19% |
103.2 |
0.47% |
5,858 |
26.89% |
| San Diego |
59.46% |
156 |
9,219 |
59.46% |
0 |
0% |
768.3 |
4.96% |
0 |
0% |
5,517 |
35.58% |
| San Francisco |
64.3% |
5 |
1,826 |
64.23% |
1.849 |
0.07% |
929.5 |
32.69% |
25.07 |
0.88% |
60.53 |
2.13% |
| San Joaquin |
34.38% |
107 |
2,277.3 |
34.37% |
0.3976 |
0.01% |
3,731 |
56.31% |
174 |
2.63% |
442.8 |
6.68% |
| San Luis Obispo |
27% |
115 |
1,285 |
26.76% |
11.31 |
0.24% |
3,116 |
64.89% |
89.04 |
1.85% |
300.6 |
6.26% |
| San Mateo |
38.99% |
46 |
1,602 |
38.37% |
26.11 |
0.63% |
1,530 |
36.64% |
40.73 |
0.98% |
977.1 |
23.4% |
| Santa Barbara |
32.36% |
85 |
1,275 |
32.2% |
6.39 |
0.16% |
1,904 |
48.11% |
27.34 |
0.69% |
746 |
18.84% |
| Santa Clara |
54.59% |
144 |
5,053 |
54.16% |
40.05 |
0.43% |
2,851 |
30.56% |
183.7 |
1.97% |
1,202 |
12.89% |
| Santa Cruz |
27.47% |
47 |
570.8 |
23.35% |
100.5 |
4.11% |
1,362 |
55.71% |
69.7 |
2.85% |
341.7 |
13.98% |
| Shasta |
12.39% |
77 |
281.3 |
10.67% |
45.43 |
1.72% |
2,155 |
81.71% |
74.03 |
2.81% |
81.56 |
3.09% |
| Sierra |
2.85% |
3 |
3.213 |
2.85% |
0 |
0% |
104.3 |
92.48% |
2.899 |
2.57% |
2.368 |
2.1% |
| Siskiyou |
26.11% |
0 |
576.3 |
22.23% |
100.6 |
3.88% |
4.957 |
0.19% |
426.1 |
16.43% |
1,485 |
57.27% |
| Solano |
52.11% |
116 |
2,018 |
51.88% |
8.885 |
0.23% |
1,638 |
42.1% |
47.32 |
1.22% |
178.2 |
4.58% |
| Sonoma |
36.26% |
116 |
2,019 |
34.56% |
99.14 |
1.7% |
3,546 |
60.69% |
102.2 |
1.75% |
76.47 |
1.31% |
| Stanislaus |
19.17% |
19 |
224 |
19.17% |
0 |
0% |
878.9 |
75.23% |
29.55 |
2.53% |
35.85 |
3.07% |
| Sutter |
20.2% |
36 |
348.5 |
20.19% |
0.01389 |
0% |
1,320 |
76.5% |
47.19 |
2.73% |
9.852 |
0.57% |
| Tehama |
7.82% |
67 |
158 |
7.81% |
0.06967 |
0% |
1,764 |
87.21% |
64.27 |
3.18% |
36.37 |
1.8% |
| Trinity |
1.41% |
5 |
2.293 |
1.29% |
0.227 |
0.13% |
170.1 |
95.41% |
4.132 |
2.32% |
1.528 |
0.86% |
| Tulare |
23.92% |
91 |
2,078 |
23.91% |
0.5694 |
0.01% |
4,571 |
52.59% |
140.2 |
1.61% |
1,901 |
21.88% |
| Tuolumne |
13.22% |
32 |
161.9 |
11.71% |
20.92 |
1.51% |
1,073 |
77.61% |
64.73 |
4.68% |
62.04 |
4.49% |
| Ventura |
55.06% |
67 |
4,032 |
55.06% |
0 |
0% |
1,200 |
16.38% |
4.032 |
0.06% |
2,087 |
28.5% |
| Yolo |
32.13% |
62 |
813.7 |
32.13% |
0.04278 |
0% |
1,641 |
64.8% |
52.44 |
2.07% |
25.47 |
1.01% |
| Yuba |
15.99% |
48 |
238.4 |
15.96% |
0.387 |
0.03% |
1,209 |
80.97% |
35.04 |
2.35% |
10.47 |
0.7% |
Source: Geographic data for primary and secondary distribution lines that Bear Valley Electric Service, PacifiCorp, Pacific Gas and Electric, Southern California Edison, and San Diego Gas and Electric reported to the Energy Safety Office, as of June 2021, and interviews with Energy Safety Office staff.
Note: Liberty Utilities did not provide consent to publish its detailed data.