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System-wide upgrades to CMP's transmission and distribution equipment are vital to address the increasing demand placed on the Company's ability to meet customer needs. These projects include the upgrade and replacement of aging electric infrastructure, such as transformers and above ground/underground cable, and the building of new substations and transmission lines to increase the capacity of the system to meet customers' increased demand for electricity.
Substations – Connecting the regional transmission grid to our electric distribution network, substations are where 115-kV power is "stepped down” to 35kV for delivery to customers. Many of our current substations are 50+ years old and to assure the continued reliability of the system we will modernize or replace substations as needed. We also may reroute lines in and out of the substation.
Lines – upgrading, rerouting, and replacing overhead electrical lines, poles and transformers.
CMP is committed to working cooperatively with our customers, neighbors, community leaders, and regulators as we improve reliability while minimizing disruption to the environment and community. We have a dedicated team of public outreach liaisons who will be involved throughout the duration of these projects to answer any questions you may have.
Below are the stages of the project construction process that you may see in your community.
1) Laying matting and building access roads for construction vehicles while protecting the area
2) Tree clearing – trimming "danger trees" that may cause service interruption
3) Drilling foundations which will support the new galvanized steel poles
4) Setting the bolt cage for the foundation structure
5) Pouring concrete for the foundations
6) Final concrete cap for the H-frame foundations
7) Setting the poles into the foundation
8) Stringing the wire (conductor) onto the poles
9) Restoration - grading, seeding & mulch. Access roads removed.
Updated September 2020
CMP designs projects to avoid and minimize negative impacts to the community and the environment. Early project planning efforts included the completion of a set of resource assessments to clarify important planning considerations such as water resources, soil characteristics, cultural resources, and sensitive plant and animal species. Active regulatory coordination and reviews precede numerous permitting efforts and are ongoing through the construction phase of the project. CMP secures the necessary authorizations reviews and permits from agencies across federal, state and local administration agencies. CMP has sought consultation and permits from the following agencies where required:
State of Maine
Read more about it here.
CMP, a subsidiary of AVANGRID, serves more than 636,000 electricity customers in an 11,000 square-mile service area in central and southern Maine. Affiliated with Iberdrola SA, AVANGRID owns eight electricity, natural gas or combination utilities in Connecticut, Maine, Massachusetts, and New York. The utilities serve 2.2 million electricity customers, 930,000 natural gas customers, and are recognized for safe, reliable energy delivery, excellent customer service, and a commitment to the community and environment.