WEC · 10-Q · 2026Q2 · Full report
Transmission Infrastructure Investment
WEC ENERGY GROUP, INC. · 2026-08-04 · Importance 64 · Surprise 42 · In source text
WEC expects to provide approximately $645 million of capital contributions to American Transmission Company (ATC) from 2026 through 2028. Its share of MISO Tranche 1 and Tranche 2.1 investments is estimated at approximately $700 million and $400 million, respectively, between 2026 and 2030. These projects support MISO's long-range transmission planning and grid upgrades needed to accommodate a shift toward lower-carbon generation.
Key facts
- We expect to provide total capital contributions to ATC of approximately $645 million from 2026 through 2028. source
- WEC's portion of the investment in MISO Tranche 1 is estimated to be approximately $700 million between 2026 and 2030 and Tranche 2.1 approximately $400 million between 2026 and 2030. source
- We currently forecast that our share of ATC's projected capital expenditures over the next five years will be approximately $4.1 billion. source
- WE and WPS deferred $194.5 million of transmission costs as of the second quarter of 2026 billed by transmission providers (difference between actual transmission costs and those included in rates). source
- During the six months ended June 30, 2026, 358.8 million of costs were billed to our electric utilities by transmission providers, compared with $308.8 million in 2025. source
- Transmission amounts billed to the electric utilities by transmission providers were $194.5 million in the second quarter of 2026 and $159.9 million in the second quarter of 2025. source
- Equity in earnings of transmission affiliates was $62.6 million for the electric transmission segment for the three months ended June 30, 2026, compared with $51.9 million for the same quarter in 2025, an increase of $10.7 million. source
- Equity in earnings of transmission affiliates was $122.1 million for the six months ended June 30, 2026, an increase of $16.6 million versus 2025. source
Impact estimates
| metric | direction | stage | expected | basis |
|---|---|---|---|---|
| assets | positive | probable | +3.9% | We currently forecast that our share of ATC's projected capital expenditures over the next five years will be approximately $4.1 billion. |
| cash | negative | probable | -3.9% | We currently forecast that our share of ATC's projected capital expenditures over the next five years will be approximately $4.1 billion. |
| operating_income | negative | realized | -2.4% | During the six months ended June 30, 2026, 358.8 million of costs were billed to our electric utilities by transmission providers,… |
| assets | positive | probable | +1.0% | WEC's portion of the investment in MISO Tranche 1 is estimated to be approximately $700 million between 2026 and 2030 and Tranche 2.1… |
| cash | negative | probable | -1.0% | WEC's portion of the investment in MISO Tranche 1 is estimated to be approximately $700 million between 2026 and 2030 and Tranche 2.1… |
| assets | positive | probable | +0.6% | We expect to provide total capital contributions to ATC of approximately $645 million from 2026 through 2028. |
| cash | negative | probable | -0.6% | We expect to provide total capital contributions to ATC of approximately $645 million from 2026 through 2028. |
| assets | positive | realized | +0.4% | WE and WPS deferred $194.5 million of transmission costs as of the second quarter of 2026 billed by transmission providers (difference… |