Merchant transmission should not be granted eminent domain authority. Eminent domain authority allows the involuntary condemnation of private property. It allows the authority to impose involuntary costs on landowners who choose not to participate in the transmission project. The landowner's property value is not freely negotiated between buyer and seller when the transmission company has eminent domain authority. The price is capped at whatever the transmission company wants to pay. If the owner doesn't accept the offer, the property is taken through eminent domain and the price paid is set by a court (or mediation).
Merchant transmission uses eminent domain to keep its land acquisition costs low, although it is not charging its customers on a cost-plus basis. The benefits of acquiring land cheaply aren't flowing to the customers, they're flowing into the pockets of the merchant transmission owner.
Just in case you need to see this concept in action, take a look at the minutes of a February 5, 2020 meeting of the City of Columbia, Missouri Water and Light Advisory Board.
Invenergy is the only one who benefits from eminent domain.
Eminent domain should NEVER be authorized for merchant transmission. It does not benefit the customers or landowners. It only benefits the for-profit transmission owner, Invenergy.