| Rank | Name | Market Cap | Price | Today | Price (30 days) | Country | |
|---|---|---|---|---|---|---|---|
 | 1 |  | NZ$245.53 B | NZ$119.27 | 2.60% | 🇺🇸 USA | |
| 2 |  | NZ$196.81 B | NZ$31.15 | 0.46% | 🇪🇸 Spain | |
| 3 |  | NZ$173.56 B | NZ$7.09 | 0.13% | 🇨🇳 China | |
| 4 |  | NZ$169.72 B | NZ$1.51 | 0.30% | 🇦🇪 UAE | |
| 5 |  | NZ$161.46 B | NZ$146.76 | 0.58% | 🇺🇸 USA | |
| 6 |  | NZ$159.02 B | NZ$507.40 | 0.75% | 🇺🇸 USA | |
| 7 |  | NZ$154.92 B | NZ$15.22 | 0.10% | 🇮🇹 Italy | |
| 8 |  | NZ$148.08 B | NZ$190.53 | 0.53% | 🇺🇸 USA | |
| 9 |  | NZ$116.58 B | NZ$118.92 | 0.35% | 🇬🇧 UK | |
| 10 |  | NZ$92.10 B | NZ$37.43 | 0.49% | 🇫🇷 France | |
| 11 |  | NZ$78.32 B | NZ$106.98 | 1.79% | 🇸🇦 S. Arabia | |
| 12 |  | NZ$76.78 B | NZ$29.38 | 0.23% | 🇩🇪 Germany | |
| 13 |  | NZ$76.10 B | NZ$89.25 | 1.75% | 🇺🇸 USA | |
| 14 |  | NZ$62.84 B | NZ$108.97 | 1.71% | 🇺🇸 USA | |
| 15 |  | NZ$62.37 B | NZ$1.25 | 0.00% | 🇦🇪 UAE | |
| 16 |  | NZ$62.19 B | NZ$6.41 | 0.58% | 🇮🇳 India | |
| 17 |  | NZ$59.99 B | NZ$134.41 | 0.92% | 🇺🇸 USA | |
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| 18 |  | NZ$55.14 B | NZ$172.79 | 0.05% | 🇺🇸 USA | |
| 19 |  | NZ$54.26 B | NZ$51.52 | 0.90% | 🇪🇸 Spain | |
| 20 |  | NZ$48.88 B | NZ$50.89 | 0.30% | 🇪🇸 Spain | |
| 21 |  | NZ$45.61 B | NZ$233.90 | 0.32% | 🇺🇸 USA | |
| 22 |  | NZ$45.45 B | NZ$219.04 | 0.89% | 🇺🇸 USA | |
| 23 |  | NZ$45.02 B | NZ$128.74 | 0.15% | 🇦🇹 Austria | |
| 24 |  | NZ$44.79 B | NZ$40.74 | 0.47% | 🇬🇧 UK | |
| 25 |  | NZ$40.15 B | NZ$252.79 | 0.17% | 🇺🇸 USA | |
| 26 |  | NZ$39.67 B | NZ$78.64 | 0.63% | 🇨🇦 Canada | |
| 27 |  | NZ$38.53 B | NZ$104.90 | 1.80% | 🇺🇸 USA | |
| 28 |  | NZ$35.66 B | NZ$59.46 | 0.18% | 🇨🇦 Canada | |
| 29 |  | NZ$34.31 B | NZ$114.73 | 0.60% | 🇺🇸 USA | |
| 30 |  | NZ$32.47 B | NZ$20.67 | 8.42% | 🇲🇾 Malaysia | |
| 31 |  | NZ$31.42 B | NZ$81.66 | 1.76% | 🇺🇸 USA | |
| 32 |  | NZ$30.68 B | NZ$65.20 | 0.20% | 🇺🇸 USA | |
| 33 |  | NZ$28.93 B | NZ$6.90 | 0.03% | 🇵🇹 Portugal | |
| 34 |  | NZ$28.47 B | NZ$12.55 | 0.92% | 🇧🇷 Brazil | |
| 35 |  | NZ$25.62 B | NZ$99.74 | 0.61% | 🇺🇸 USA | |
| 36 |  | NZ$25.48 B | NZ$110.78 | 0.70% | 🇺🇸 USA | |
| 37 |  | NZ$24.09 B | NZ$7.54 | 1.04% | 🇮🇳 India | |
| 38 |  | NZ$23.57 B | NZ$3.58 | 2.16% | 🇮🇳 India | |
| 39 |  | NZ$23.04 B | NZ$10.82 | 1.54% | 🇭🇰 Hong Kong | |
| 40 |  | NZ$21.31 B | NZ$19.14 | 1.79% | 🇯🇵 Japan | |
| 41 |  | NZ$20.39 B | NZ$11.84 | 2.22% | 🇦🇺 Australia | |
| 42 |  | NZ$19.61 B | NZ$18.29 | 2.04% | 🇪🇸 Spain | |
| 43 |  | NZ$18.35 B | NZ$347.82 | 0.00% | 🇨🇭 Switzerland | |
| 44 |  | NZ$18.20 B | NZ$3.79 | 0.30% | 🇮🇹 Italy | |
| 45 |  | NZ$18.09 B | NZ$60.18 | 0.52% | 🇬🇧 UK | |
| 46 |  | NZ$17.94 B | NZ$3.73 | 0.09% | 🇬🇧 UK | |
| 47 |  | NZ$17.72 B | NZ$26.00 | 0.78% | 🇬🇧 UK | |
| 48 |  | NZ$17.60 B | NZ$147.46 | 0.09% | 🇺🇸 USA | |
| 49 |  | NZ$17.24 B | NZ$61.51 | 0.86% | 🇺🇸 USA | |
| 50 |  | NZ$16.95 B | NZ$0.16 | 1.07% | 🇨🇱 Chile | |
| 51 |  | NZ$16.83 B | NZ$42.61 | 1.94% | 🇯🇵 Japan | |
| 52 |  | NZ$15.18 B | NZ$20.10 | 1.74% | 🇯🇵 Japan | |
| 53 |  | NZ$14.66 B | NZ$72.87 | 0.07% | 🇺🇸 USA | |
| 54 |  | NZ$14.64 B | NZ$5.60 | 3.88% | 🇳🇿 New Zealand | |
| 55 |  | NZ$14.27 B | NZ$12.39 | 0.61% | 🇧🇷 Brazil | |
| 56 |  | NZ$14.08 B | NZ$7.12 | 0.55% | 🇲🇾 Malaysia | |
| 57 |  | NZ$14.07 B | NZ$12.57 | 1.02% | 🇮🇳 India | |
| 58 |  | NZ$13.96 B | NZ$11.07 | 0.76% | 🇧🇷 Brazil | |
| 59 |  | NZ$13.82 B | NZ$4.36 | 0.70% | 🇮🇹 Italy | |
| 60 |  | NZ$13.47 B | NZ$26.71 | 1.30% | 🇮🇳 India | |
| 61 |  | NZ$12.89 B | NZ$60.13 | 0.92% | 🇺🇸 USA | |
| 62 |  | NZ$11.87 B | NZ$8.06 | 0.47% | 🇮🇹 Italy | |
| 63 |  | NZ$11.55 B | NZ$13.37 | 0.29% | 🇮🇹 Italy | |
| 64 |  | NZ$10.89 B | NZ$15.34 | 0.87% | 🇧🇷 Brazil | |
| 65 |  | NZ$10.83 B | NZ$4.83 | 4.29% | 🇵🇱 Poland | |
| 66 |  | NZ$10.15 B | NZ$188.01 | 0.43% | 🇺🇸 USA | |
| 67 |  | NZ$10.02 B | NZ$12.22 | 0.54% | 🇧🇷 Brazil | |
| 68 |  | NZ$9.43 B | NZ$46.00 | 0.05% | 🇨🇦 Canada | |
| 69 |  | NZ$9.41 B | NZ$25.58 | 1.83% | 🇬🇷 Greece | |
| 70 |  | NZ$9.17 B | NZ$25.46 | 12.79% | 🇵🇭 Philippines | |
| 71 |  | NZ$8.82 B | NZ$41.04 | 0.37% | 🇮🇹 Italy | |
| 72 |  | NZ$8.65 B | NZ$93.45 | 0.48% | 🇺🇸 USA | |
| 73 |  | NZ$8.41 B | NZ$5.91 | 1.11% | 🇨🇱 Chile | |
| 74 |  | NZ$7.92 B | NZ$44.47 | 0.85% | 🇦🇹 Austria | |
| 75 |  | NZ$7.92 B | NZ$7.12 | 0.58% | 🇶🇦 Qatar | |
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| 76 |  | NZ$7.48 B | NZ$11.12 | 0.67% | 🇦🇺 Australia | |
| 77 |  | NZ$7.43 B | NZ$119.16 | 0.06% | 🇺🇸 USA | |
| 78 |  | NZ$7.37 B | NZ$73.48 | 0.27% | 🇺🇸 USA | |
| 79 |  | NZ$7.29 B | NZ$66.57 | 0.37% | 🇺🇸 USA | |
| 80 |  | NZ$7.27 B | NZ$9.06 | 1.20% | 🇳🇿 New Zealand | |
| 81 |  | NZ$7.07 B | NZ$119.87 | 0.25% | 🇺🇸 USA | |
| 82 |  | NZ$7.04 B | NZ$62.48 | 0.44% | 🇨🇦 Canada | |
| 83 |  | NZ$6.79 B | NZ$121.63 | 0.68% | 🇦🇷 Argentina | |
| 84 |  | NZ$6.75 B | NZ$93.10 | 0.25% | 🇺🇸 USA | |
| 85 |  | NZ$6.72 B | NZ$5.16 | 0.07% | 🇮🇹 Italy | |
| 86 |  | NZ$6.45 B | NZ$3.68 | 5.49% | 🇵🇱 Poland | |
| 87 |  | NZ$6.33 B | NZ$9.17 | 0.02% | 🇮🇳 India | |
| 88 |  | NZ$6.18 B | NZ$106.73 | 0.51% | 🇺🇸 USA | |
| 89 |  | NZ$5.80 B | NZ$11.61 | 1.30% | 🇯🇵 Japan | |
| 90 |  | NZ$5.53 B | NZ$3.95 | 1.63% | 🇮🇳 India | |
| 91 |  | NZ$5.34 B | NZ$146.18 | 0.42% | 🇺🇸 USA | |
| 92 |  | NZ$5.24 B | NZ$125.27 | 1.04% | 🇺🇸 USA | |
| 93 |  | NZ$5.19 B | NZ$39.29 | 2.52% | 🇧🇷 Brazil | |
| 94 |  | NZ$5.18 B | NZ$84.43 | 0.53% | 🇺🇸 USA | |
| 95 |  | NZ$5.07 B | NZ$10.75 | 0.21% | 🇬🇧 UK | |
| 96 |  | NZ$4.97 B | NZ$61.79 | 0.79% | 🇺🇸 USA | |
| 97 |  | NZ$4.70 B | NZ$132.65 | 0.00% | 🇩🇪 Germany | |
| 98 |  | NZ$4.68 B | NZ$0.27 | 0.59% | 🇨🇱 Chile | |
| 99 |  | NZ$4.59 B | NZ$197.10 | 0.22% | 🇺🇸 USA | |
| 100 |  | NZ$4.59 B | NZ$47.60 | 2.92% | 🇯🇵 Japan | |
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.