Mills called the proposals to give local governments the ability to block the project "poor public policy." She said Wednesday the bills would give towns disproportionate power over a project with statewide benefits and would discourage investment by upsetting established procedures.
The New England Clean Energy Connect aims to bring Canadian hydropower to the New England power grid to help Massachusetts meet its clean energy goals.
Sandi Howard, a critic, accused Mills of siding with "foreign corporations" over "the will of Maine people."
Mills came out in support of the $1 billion project after CMP sweetened the deal with a package of benefits for Maine.