WEC Energy's $47.5 billion grid plan bets on AI data centers, and Wisconsin's regulator holds the key
A record $47.5 billion five-year plan, nearly half for data centers, puts Wisconsin's ratepayer protection regime and its regulators in the path of the AI buildout.
Vincent Jiang · 2 min read
WEC Energy Group+1.45% — WEC Energy Group, up 1.45 percent today, the Milwaukee-based parent of We Energies, will spend a record $47.5 billion on its Wisconsin grid between 2027 and 2031, a $10 billion, more than 26%, increase over the prior five-year plan (which implied about $37.5 billion for 2026-2030), unveiled on the October 29 earnings call 12. Roughly 45% of that money exists to power data centers 2. Third-quarter earnings came in at $1.18 a share, up from 83 cents a year ago, on net income of $389.3 million, and 2026 guidance rose to $5.60 to $5.64 per share 45.
Whether that growth arrives on schedule now depends less on the customers than on the state regulator. The spending is already accelerating: quarterly capital expenditures have run ahead of operating cash flow for most of the past two years 7.
WEC's quarterly capex has doubled in two years and outran operating cash in six of ten quarters
- Capital expenditures
- Operating cash flow
Data
| Capital expenditures | Operating cash flow | |
|---|---|---|
| Q1 '24 | 0.45 | 0.86 |
| Q2 '24 | 0.69 | 1.04 |
| Q3 '24 | 0.8 | 0.73 |
| Q4 '24 | 0.85 | 0.58 |
| Q1 '25 | 0.7 | 1.16 |
| Q2 '25 | 0.83 | 0.85 |
| Q3 '25 | 1.57 | 0.94 |
| Q4 '25 | 1.3 | 0.43 |
| Q1 '26 | 0.82 | 1.22 |
| Q2 '26 | 1.26 | 0.99 |
Management says the hyperscalers pay their own way
Under We Energies' very large customer tariff, a special rate class for data centers drawing 100 megawatts or more that requires those customers to cover their full cost of service, Microsoft−1.68% — Microsoft, down 1.68 percent today, Vantage, a data-center developer, and Oracle−6.16% — Oracle, down 6.16 percent today are locked into long contracts and, per CEO Scott Lauber, pay "their full share of costs" 13. Cash returns from those customers hold planned equity issuance flat at $5 billion to $5.5 billion despite the extra $10 billion of capital 1.
Demand is forecast to grow 4.9 gigawatts by 2031, including 400 megawatts from an unnamed data-center developer whose power likely lands only in 2032 or 2033 13. By 2031, very large customers are projected to sit behind nearly 30% of total assets, a concentration management defends by pointing to the tariff's credit requirements 1.
The approvals, not the customers, set the pace
Most of the new capital needs Public Service Commission approval, and that commission's reach is narrow: state law confined its review of the 1.5 gigawatts of Invenergy gas plants We Energies now seeks to buy for more than $2 billion, a purchase reported here on October 23 6. Chair Summer Strand called the framework's deficiencies "ripe for legislative action" when the commission approved the plants on October 15 6. The unnamed 400-megawatt customer may also site in Wisconsin Public Service territory, where no large-customer tariff yet protects other ratepayers 3.
The "plus" in WEC's 7% to 9%+ growth guidance is, in management's own words, faster approvals, possibly in 2028, more likely 2029 1. The numbers to watch are the commission's next rulings on the plan's generation projects, and whether Wisconsin Public Service gains a large-customer tariff before the newest hyperscaler signs 13.
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