The Office of Energy Security has released the Draft Environmental Impact Statement (DEIS) for the Hiawatha Transmission Line Project, Xcel’s plan to run high-voltage lines along the Midtown Greenway (careful, the PDF is huge and will bog down even newer computers). They have also announced a public meeting to take comments on the document on February 10th.
The DEIS does identify above-ground lines as having negative impacts on visual quality, being inconsistent with local urban design standards and potentially discouraging additional residential and commercial development nearby.
As I understand it, although the EIS has to identify mitigation strategies for the impacts of the project, it does not require that these mitigation measures be implemented if the project is approved. From this TC Daily Planet article, it sounds as though the PUC may have the final say about mitigation, but I assume that the Department of Commerce is the responsible LGU, and would also have to approve a route and mitigation measures.
Either way, the public meeting is a chance for anyone to comment on potential additional impacts, whether the scale of impacts has been adequately measured, and the effectiveness of mitigation measures identified. This is a good time to get involved.