| Rank | Name | Market Cap | Price | Today | Price (30 days) | Country | |
|---|---|---|---|---|---|---|---|
 | 1 |  | £111.13 B | £53.98 | 1.27% | 🇺🇸 USA | |
| 2 |  | £85.68 B | £13.56 | 0.87% | 🇪🇸 Spain | |
| 3 |  | £76.95 B | £0.68 | 0.59% | 🇦🇪 UAE | |
| 4 |  | £76.20 B | £3.11 | 0.50% | 🇨🇳 China | |
| 5 |  | £72.84 B | £66.21 | 0.90% | 🇺🇸 USA | |
| 6 |  | £68.19 B | £6.72 | 0.35% | 🇮🇹 Italy | |
| 7 |  | £67.62 B | £215.78 | 2.88% | 🇺🇸 USA | |
| 8 |  | £67.04 B | £86.25 | 0.74% | 🇺🇸 USA | |
| 9 |  | £51.75 B | £52.80 | 0.13% | 🇬🇧 UK | |
| 10 |  | £39.35 B | £16.19 | 0.03% | 🇫🇷 France | |
| 11 |  | £38.01 B | £51.92 | 2.67% | 🇸🇦 S. Arabia | |
| 12 |  | £35.16 B | £41.23 | 0.11% | 🇺🇸 USA | |
| 13 |  | £33.77 B | £12.92 | 0.10% | 🇩🇪 Germany | |
| 14 |  | £29.49 B | £51.13 | 0.85% | 🇺🇸 USA | |
| 15 |  | £28.54 B | £2.94 | 0.03% | 🇮🇳 India | |
| 16 |  | £28.26 B | £0.57 | 0.36% | 🇦🇪 UAE | |
| 17 |  | £27.20 B | £60.95 | 0.72% | 🇺🇸 USA | |
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| 18 |  | £24.98 B | £78.29 | 0.67% | 🇺🇸 USA | |
| 19 |  | £23.82 B | £22.61 | 0.74% | 🇪🇸 Spain | |
| 20 |  | £21.31 B | £22.19 | 0.15% | 🇪🇸 Spain | |
| 21 |  | £20.75 B | £100.01 | 0.73% | 🇺🇸 USA | |
| 22 |  | £20.42 B | £104.74 | 1.04% | 🇺🇸 USA | |
| 23 |  | £19.58 B | £17.81 | 0.34% | 🇬🇧 UK | |
| 24 |  | £19.40 B | £56.07 | 0.84% | 🇦🇹 Austria | |
| 25 |  | £18.01 B | £113.43 | 0.66% | 🇺🇸 USA | |
| 26 |  | £17.94 B | £48.85 | 0.38% | 🇺🇸 USA | |
| 27 |  | £17.66 B | £35.21 | 0.32% | 🇨🇦 Canada | |
| 28 |  | £15.99 B | £26.66 | 0.24% | 🇨🇦 Canada | |
| 29 |  | £15.55 B | £52.01 | 0.70% | 🇺🇸 USA | |
| 30 |  | £14.53 B | £9.27 | 0.00% | 🇲🇾 Malaysia | |
| 31 |  | £14.38 B | £37.40 | 2.06% | 🇺🇸 USA | |
| 32 |  | £13.81 B | £29.35 | 0.61% | 🇺🇸 USA | |
| 33 |  | £12.56 B | £3.02 | 0.48% | 🇵🇹 Portugal | |
| 34 |  | £12.45 B | £5.50 | 0.95% | 🇧🇷 Brazil | |
| 35 |  | £11.59 B | £50.39 | 0.95% | 🇺🇸 USA | |
| 36 |  | £11.59 B | £45.12 | 0.63% | 🇺🇸 USA | |
| 37 |  | £11.42 B | £3.58 | 0.33% | 🇮🇳 India | |
| 38 |  | £11.40 B | £1.73 | 2.11% | 🇮🇳 India | |
| 39 |  | £10.20 B | £4.79 | 0.69% | 🇭🇰 Hong Kong | |
| 40 |  | £9.06 B | £8.14 | 0.93% | 🇯🇵 Japan | |
| 41 |  | £8.89 B | £5.16 | 0.09% | 🇦🇺 Australia | |
| 42 |  | £8.41 B | £8.01 | 0.37% | 🇪🇸 Spain | |
| 43 |  | £8.16 B | £154.82 | 0.06% | 🇨🇭 Switzerland | |
| 44 |  | £8.15 B | £27.13 | 0.26% | 🇬🇧 UK | |
| 45 |  | £8.01 B | £1.71 | 2.89% | 🇮🇹 Italy | |
| 46 |  | £7.95 B | £28.37 | 0.98% | 🇺🇸 USA | |
| 47 |  | £7.93 B | £66.48 | 0.28% | 🇺🇸 USA | |
| 48 |  | £7.92 B | £11.62 | 0.00% | 🇬🇧 UK | |
| 49 |  | £7.91 B | £1.64 | 0.43% | 🇬🇧 UK | |
| 50 |  | £7.76 B | £0.07242 | 0.89% | 🇨🇱 Chile | |
| 51 |  | £7.32 B | £18.45 | 0.17% | 🇯🇵 Japan | |
| 52 |  | £7.07 B | £2.65 | 3.78% | 🇳🇿 New Zealand | |
| 53 |  | £6.62 B | £6.03 | 2.66% | 🇮🇳 India | |
| 54 |  | £6.56 B | £32.62 | 0.53% | 🇺🇸 USA | |
| 55 |  | £6.45 B | £8.54 | 1.12% | 🇯🇵 Japan | |
| 56 |  | £6.24 B | £12.39 | 1.69% | 🇮🇳 India | |
| 57 |  | £6.17 B | £5.36 | 0.07% | 🇧🇷 Brazil | |
| 58 |  | £6.14 B | £1.96 | 0.39% | 🇮🇹 Italy | |
| 59 |  | £6.12 B | £3.10 | 2.21% | 🇲🇾 Malaysia | |
| 60 |  | £6.06 B | £4.84 | 1.62% | 🇧🇷 Brazil | |
| 61 |  | £5.73 B | £26.74 | 1.52% | 🇺🇸 USA | |
| 62 |  | £5.26 B | £3.62 | 0.28% | 🇮🇹 Italy | |
| 63 |  | £5.03 B | £5.83 | 0.88% | 🇮🇹 Italy | |
| 64 |  | £4.75 B | £2.12 | 0.33% | 🇵🇱 Poland | |
| 65 |  | £4.73 B | £6.58 | 0.91% | 🇧🇷 Brazil | |
| 66 |  | £4.61 B | £85.37 | 0.47% | 🇺🇸 USA | |
| 67 |  | £4.40 B | £5.40 | 0.57% | 🇧🇷 Brazil | |
| 68 |  | £4.29 B | £11.68 | 0.73% | 🇬🇷 Greece | |
| 69 |  | £4.20 B | £20.47 | 0.67% | 🇨🇦 Canada | |
| 70 |  | £3.91 B | £18.43 | 0.46% | 🇮🇹 Italy | |
| 71 |  | £3.88 B | £41.97 | 0.05% | 🇺🇸 USA | |
| 72 |  | £3.69 B | £10.08 | 0.00% | 🇵🇭 Philippines | |
| 73 |  | £3.67 B | £2.62 | 1.14% | 🇨🇱 Chile | |
| 74 |  | £3.63 B | £3.31 | 0.74% | 🇶🇦 Qatar | |
| 75 |  | £3.61 B | £20.29 | 1.24% | 🇦🇹 Austria | |
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| 76 |  | £3.45 B | £55.28 | 1.28% | 🇺🇸 USA | |
| 77 |  | £3.36 B | £30.73 | 1.57% | 🇺🇸 USA | |
| 78 |  | £3.34 B | £33.30 | 0.99% | 🇺🇸 USA | |
| 79 |  | £3.32 B | £4.95 | 0.68% | 🇦🇺 Australia | |
| 80 |  | £3.26 B | £4.07 | 0.98% | 🇳🇿 New Zealand | |
| 81 |  | £3.26 B | £55.28 | 0.96% | 🇺🇸 USA | |
| 82 |  | £3.10 B | £42.77 | 0.52% | 🇺🇸 USA | |
| 83 |  | £3.09 B | £27.50 | 0.89% | 🇨🇦 Canada | |
| 84 |  | £3.06 B | £56.37 | 4.14% | 🇦🇷 Argentina | |
| 85 |  | £2.92 B | £2.28 | 0.07% | 🇮🇹 Italy | |
| 86 |  | £2.88 B | £4.19 | 0.40% | 🇮🇳 India | |
| 87 |  | £2.80 B | £48.42 | 0.08% | 🇺🇸 USA | |
| 88 |  | £2.58 B | £1.48 | 0.76% | 🇵🇱 Poland | |
| 89 |  | £2.57 B | £1.84 | 1.07% | 🇮🇳 India | |
| 90 |  | £2.48 B | £4.97 | 2.26% | 🇯🇵 Japan | |
| 91 |  | £2.48 B | £59.19 | 1.81% | 🇺🇸 USA | |
| 92 |  | £2.42 B | £66.47 | 1.13% | 🇺🇸 USA | |
| 93 |  | £2.40 B | £39.12 | 0.34% | 🇺🇸 USA | |
| 94 |  | £2.39 B | £16.63 | 0.00% | 🇧🇷 Brazil | |
| 95 |  | £2.34 B | £4.97 | 0.61% | 🇬🇧 UK | |
| 96 |  | £2.25 B | £28.03 | 1.31% | 🇺🇸 USA | |
| 97 |  | £2.13 B | £60.14 | 0.71% | 🇩🇪 Germany | |
| 98 |  | £2.08 B | £89.37 | 0.96% | 🇺🇸 USA | |
| 99 |  | £2.07 B | £0.12 | 0.70% | 🇨🇱 Chile | |
| 100 |  | £2.04 B | £8.19 | 1.72% | 🇸🇦 S. Arabia | |
This is the list of the largest utility companies by market capitalization. A public utility company or simply utility company is an organization that maintains the infrastructure for a public service. Only the top utility companies are shown in this list and utility companies that are not publicly traded are excluded. The ranking and the market cap data shown on this page are updated daily.