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MSTI transmission line’s path rating affirmed
Published
12 years agoon
Northwestern Energy’s Mountain States Transmission Intertie (MSTI), a proposed high-voltage transmission line that would run from Townshend, Mont. to southeastern Idaho, has been approved to carry up to 1,500 megawatts of electricity north-to-south and up to 1,100 MW south-to-north.
The Western Electricity Coordinating Council (WECC) approved the project through a project rating review process, a technical planning study that defines the transfer limit that a new transmission line (or lines) can achieve without interfering with the reliability or stability of other lines in the western interconnection. In addition to technical modeling, the path rating process requires a peer review by all interested transmission providers and other stakeholders.
The MSTI project has received “Phase 3” status, which means that the study has been concluded, the path rating established and the line can be constructed with the approved rating. Phase 3 concludes when the project is placed into service.
Northwestern still has a lot of work to get MSTI into operation, including negotiating with landowners and the state goverment for siting the line.
The WECC recently published a 10-year transmission planning study and the Northern Tier Transmission Group (NTTG) recently published its biennial planning report, both of which look at what the grid may look like in 2020 under different operating conditions. Both reports found that new transmission lines are needed throughout the west to accommodate demand for proposed renewable energy development. Both studies also found benefit (mostly in the form of congestion relief) should transmission be built to accommodate renewable energy development in Montana.
MSTI is still working its way through the siting process with the Bureau of Land Management and Montana Department of Environmental Quality.
While the path rating is independent of the siting process, the path rating study did evaluate the “common corridor” approach to what has been termed the “northern route alterative” that may allow MSTI to more closely parallel the existing BPA double-circuited 500kv towers from Townsend to Deer Lodge.
The rating was affirmed for all of the potential alternative routes, including the scenario that places MSTI in a common corridor with the BPA line.
NorthWestern Energy provides electricity and natural gas in the Upper Midwest and Northwest, serving approximately 665,000 customers in Montana, South Dakota and Nebraska.
Megan Paulson is the Co-Founder and Chief Operating Officer of Outlaw Partners.
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My Barking Dog is a nightmare comedy
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My Barking Dog is a nightmare comedy that tells the story of Toby and Melinda, two lonely people whose lives are forever changed the night they encounter a starving coyote at their apartment building. Over time they grow to expect him, leaving ritual offerings to entice the coyote every night. Toby and Melinda forge a connection over this visitor and share curiosity and concern about his presence in the city. The coyote expands their world–until, one night, their world is shattered. Their lives are pushed suddenly into uncharted territory, sending them on a surreal odyssey that changes their city–and the world–forever.
Directed by LX Miller. Starring Max Schneider and Denise Hergett
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