North Central Wisconsin
Zone 1
Transmission system limitations in Zone 1
Zone 1 has a few key system performance issues. High voltages may occur in the northern portion of the zone under system intact and contingent system conditions. Potential overloads and low voltages resulting from multiple contingency planning events will continue to be monitored. The most severe limitations are expected during both peak and off-peak periods.
Electricity usage
Peak electric demand typically occurs during the summer months, with some winter peaks appearing in the northern portion of the zone. Primary electricity users in Zone 1 include several large paper mills and food processing plants.
Electric load is forecasted to grow approximately 0.2 percent annually through 2036.
Transmission projects in Zone 1
The most notable planned, proposed, and provisional network/asset-renewal projects in Zone 1, are listed below – along with their projected year of completion and the factors driving the need for the projects.
Zone 1 includes the counties of:
- Adams , Wis.
- Fond du Lac (NW) , Wis.
- Forest (SW) , Wis.
- Green Lake , Wis.
- Juneau , Wis.
- Langlade , Wis.
- Lincoln , Wis.
- Marathon , Wis.
- Marquette , Wis.
- Monroe (E) , Wis.
- Oneida , Wis.
- Portage , Wis.
- Shawano (W) , Wis.
- Vernon (E) , Wis.
- Vilas (S) , Wis.
- Washara , Wis.
- Waupaca , Wis.
- Winnebago (W) , Wis.
- Wood , Wis.
Zone 1 Planned Projects
| Project Description | Project # | In-service year | Need driver | Regulatory Update |
|---|---|---|---|---|
| Saratoga – 7 Mile Creek 138 kV, Construct New Line phase two | 1 | 2027 | Reliability | N/A |
| Rocky Run SS T2 and T4 Power Transformer Replacement | 2 | 2027 | Reliability/Condition and performance | CA approved in 2026 |
| Northern Adams County Area Network Improvement Project | 3 | 2027 | Reliability / T-D Interconnection | CA Approved in 2026 |
| North Central WI Reliability Project | 4 | 2028 | Reliability | CPCN Approved in 2026 |
| Pittsville Area Reliability Project | 5 | 2029 | Reliability / T-D Interconnection | CPCN targeted filing 2026 |
Zone 1 Proposed Projects
| Project Description | Project # | In-service year | Need driver | Regulatory Update |
|---|---|---|---|---|
| Badger West 69kV 20 ohm Series Reactor | 6 | 2027 | Operational Flexibility | N/A |
| J2099 J2107 J2185 MPFCA Network Upgrades | 7 | 2028 | G-T interconnection | CA Approved |
| Y-95 Sectionalizing Project | 8 | 2030 | Network Reliability | Future CA Filing |
| Pine – Skanawan Tap – Eastom 115 kV (I-9), OPGW Addition & Partial Rebuild | 9 | 2031 | Communication, Condition and Performance | N/A |
Zone 1 Provisional Projects
| Project Description | Project # | In-service year | Need driver | Regulatory Update |
|---|