The Mark Twain transmission project is a line consisting of two segments that will run from Palmyra, MO to the Iowa border. The 100 mile line is one of the MISO multi-value projects (MVP) approved in 2011, which will help reduce congestion and improve reliability for the transmission grid, and provide better access to new renewable energy sources.
One segment of the line will run from Palmyra to Kirksville, with the other segment traveling from Kirksville to the Iowa border. The project will total about 100 miles of new transmission lines, and a new substation near Kirksville.
Starting in 2014, Ameren held open house meetings with communities to inform the public about the project and received regulatory approval in 2018. December 2019 is the in-service date for the project.
After engaging the public on the project, Ameren will likely submit two potential routes to the Missouri Public Service Commission (PSC) for approval. The PSC gave the project conditional approval in April 2016 dependent upon gaining the assent of five counties. In March 2017, a Missouri appellate court issued a decision that overturned this conditional approval, stating that Ameren should have had this authorization before receiving state regulatory approval. Ameren gained final approval for the project in January 2018.
Ameren will hold open house meetings to provide an opportunity for communities and landowners to learn about the project and offer insight into potential routes. The open house meetings will occur in August of 2014. Several families wish to intervene in an ongoing lawsuit between Ameren and the PSC about the ability of Ameren to use eminent domain without oversight from the PSC.
Commissioners for Adair County in Missouri passed a resolution in October 2014 opposing the project. They cited the fact that the transmission line would not bring power to the county, and that they had other concerns relating to property and health claims. Several other landowners and community members have voiced opposition to the project for the same reasons. After a hearing in 2015, commissioners sent a letter to the Missouri PSC opposing the project.
One of the routing options for the project could also impact an Amish community near Greentop. There are also concerns relating to one of the potential routes running through a Mennonite community near Kirksville.
In mid-2017, Ameren held another round of open house meetings to consider new routing options for the project. Ameren is currently working with counties that project would pass through to gain their assent for use of local roads.
Clean Energy Potential:
Ameren notes that the project will increase access to new renewable energy generation in the region.
Ameren updates Adair Co. Commission on Mark Twain project March 20, 2018
ATXI outlines next steps for Mark Twain line January 17, 2018
Missouri PSC approves Mark Twain Transmission Line January 10, 2018
State approves Ameren transmission line for northeast Missouri January 10, 2018
The next steps for ATXI, Mark Twain line September 11, 2017
Ameren unit picks route for 100-mile Mark Twain transmission project September 7, 2017
ATXI ready to move forward after vote September 6, 2017
Ameren Picks Final Route for Mark Twain Transmission Line September 6, 2017
Adair County Commission votes, 2-1, to approve Mark Twain line September 5, 2017
Marion and Lewis County approve Mark Twain Transmission Project August 14, 2017
Adair County Commission, ATXI to hold public hearing August 8, 2017
ATXI drops lawsuit against Adair County August 1, 2017
ATXI makes its case - again - to Adair County June 16, 2017
Future of power line project still up in the air April 16, 2017
Mo. courts, not regulators, may decide fate of 2 big projects November 9, 2016
Adams County receives payment from Ameren November 7, 2016
Adair County vote a win for Neighbors United September 22, 2016
Adair County Commission again votes against Mark Twain Transmission Line September 20, 2016
Marion County Commission votes 2-0 not to endorse Ameren electrical project September 19, 2016
PSC approves Mark Twain line, county remains in opposition April 28, 2016
PSC rules on Mark Twain Transmission Project April 27, 2016
Wind Power Wiggles Through Midwest Transmission Roadblocks April 11, 2016
Group speaks out against transmission line project March 21, 2016
Mark Twain Transmission Project creates sparks in Jefferson City January 25, 2016
Public Service Commission delays ATXI hearings to January December 3, 2015
PSC modifies hearing schedule in ATXI transmission line case December 2, 2015
PSC hearing held at Truman State October 28, 2015
Neighbors United voices concerns about new Ameren transmission line October 23, 2015
PSC announces public hearings in Ameren transmission line application September 29, 2015
Ameren seeks ruling on PSC from apellate court March 26, 2015
Ameren, Neighbors United clash at final Mark Twain open house February 26, 2015
Community to Discuss Transmission Line February 25, 2015
Neighbors United members continue fight against Ameren February 17, 2015
Ameren officials share Mark Twain Transmission line plans February 11, 2015
Ameren finalizes route but court, PSC decisions loom February 11, 2015
Ameren Selects Southern Route for Mark Twain Transmission Line February 10, 2015
Mark Twain Transmission line location reportedly set February 9, 2015
Marion County Commission votes "no" to Mark Twain Transmission Line November 25, 2014
Shekinah Mennonite community to see impact from Ameren November 19, 2014
Amish community to see impact from Ameren Transmission Project November 6, 2014
Ameren project concerns Council November 4, 2014
Protesters, questions at Mark Twain Transmission Project open house October 31, 2014
Ameren officials hold open house October 30, 2014
Ameren meets with city, county officials before open house October 30, 2014
Knox County Commissioners join opposition of Ameren project October 23, 2014
Families fighting Ameren transmission project score court victory October 21, 2014
Adair County Commission drafts resolution opposing power line October 15, 2014
Adair County Commissioners oppose Ameren project October 15, 2014
Ameren to hold Mark Twain open houses in late October October 13, 2014
Landowners speak out regarding Ameren power lines October 10, 2014
Missouri families file suit against power line project October 9, 2014
Citizens express opposition to Ameren transmission line project September 10, 2014
118 attend transmission line project open house in Palmyra August 13, 2014
Mark Twain Transmission Project Is Coming Through Knox County August 11, 2014
Ameren gets input on transmission line August 5, 2014
Meetings set for Mark Twain Transmission Project July 26, 2014
We all know that clean energy transmission is vitally important to our energy future. It brings economic opportunity to rural areas, enables wind development and improves the reliability of your grid. But to build it properly - to create projects that work best for you and your community - requires your knowledge and participation. That's why we've created this database.
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