TALLMADGE
SubstationMichigan · CONSUMERS ENERGY CO
TALLMADGE is an electric transmission substation in Michigan, operated by CONSUMERS ENERGY CO. It is classified as high-voltage (345 kv) and connects 12 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #29224 | 345 kV | — | IN SERVICE | 22.9 mi |
| #40384 | 345 kV | — | IN SERVICE | 46.3 mi |
| #41006 | 345 kV | — | IN SERVICE | 14.8 mi |
| #31467 | 345 kV | — | IN SERVICE | 14.8 mi |
| #19340 | 345 kV | — | IN SERVICE | 46.3 mi |
| #48861 | 345 kV | — | IN SERVICE | 16.2 mi |
| #38500 | 138 kV | — | IN SERVICE | 1.8 mi |
| #11555 | 138 kV | CONSUMERS ENERGY CO | IN SERVICE | 9.2 mi |
| #36450 | 138 kV | WOLVERINE POWER SUPPLY COOP | IN SERVICE | 36.6 mi |
| #10119 | 138 kV | — | IN SERVICE | 12.6 mi |
| #47495 | 138 kV | CONSUMERS ENERGY CO | IN SERVICE | 6.7 mi |
| #47766 | 138 kV | — | IN SERVICE | 9.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TALLMADGE, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| GAINES | Substation-Adjacent | MI | Kent County | 345 kV | 600 MW | 2.2 yrs | 78.7 |
| VERGENNES | Substation-Adjacent | MI | Kent County | 345 kV | 600 MW | 2.2 yrs | 77.3 |
| J H CAMPBELL | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 75.3 |
| KENOWA | Substation-Adjacent | MI | Kent County | 345 kV | 600 MW | 1.4 yrs | 74.1 |
| ZEELAND GENERATING STATION | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 73.8 |
| UNKNOWN128738 | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 72.9 |
| UNKNOWN128766 | Substation-Adjacent | MI | Kent County | 138 kV | 100 MW | 2.2 yrs | 72.2 |
| UNKNOWN129933 | Substation-Adjacent | MI | Kent County | 138 kV | 100 MW | 2.2 yrs | 72.2 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for TALLMADGE substation, Michigan. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.