Overview
Greenstone Substation is an operational electrical substation in Michigan, United States, owned by Upper Michigan Energy Resources Corporation. It operates at 138 kV and 24.9 kV, supporting regional grid stability.
Greenstone Substation is an operational electrical substation located in Michigan, United States. Owned by Upper Michigan Energy Resources Corporation, it serves as a key node in the regional electrical infrastructure, stepping down transmission voltages for local distribution. The substation operates at two voltage levels: 138 kV for transmission and 24.9 kV for sub-transmission or distribution. This dual-voltage configuration is typical for substations that connect high-voltage transmission lines to lower-voltage distribution networks. As part of the U.S. grid, the facility adheres to NERC reliability standards and is subject to FERC regulation for interstate transmission. Located in Michigan's Upper Peninsula, the substation supports the region's electrical needs, including residential, commercial, and industrial loads. Its operational status ensures continued grid reliability in an area with significant seasonal demand variations. The facility's role in voltage transformation is critical for efficient power delivery and grid stability.
Environmental context
The substation is situated in a rural area of Michigan's Upper Peninsula, characterized by forests and cold winters. Its operation involves electromagnetic fields and potential impacts on local wildlife, though modern substations are designed to minimize ecological disruption. The facility's voltage levels indicate a role in both long-distance transmission and local distribution, influencing land use and infrastructure planning.
Frequently asked questions
Greenstone Substation is located in Michigan, United States, in the Upper Peninsula region. Its approximate coordinates are 46.4978° N, -87.8972° W.
Greenstone Substation operates at 138 kV for transmission and 24.9 kV for sub-transmission or distribution, typical for a step-down substation.
Greenstone Substation is owned by Upper Michigan Energy Resources Corporation, a utility serving the Upper Peninsula of Michigan.
As part of the U.S. electrical grid, Greenstone Substation must comply with NERC reliability standards and FERC regulations for transmission-level assets.
Substations like Greenstone transform voltage levels, enabling efficient power transmission over long distances and safe distribution to end users. They also provide switching, protection, and monitoring functions.