MISO Distribution Hardening — 380 miles

A 380-mile distribution hardening program across a MISO utility’s territory. We are replacing weak poles, converting overhead lines to underground in certain areas, adding wildlife protection, and installing automated switches. Six full-time crews on a 30-month schedule.

Distribution capability Utilities sector

Client: MISO distribution utility
Region: Lower Midwest (MISO)
Duration: 30 month program
Voltage: 12.47 kV · 380 mi
Status: In Progress

12.47 kV distribution circuit — FIG— P0192.A · 12.47 KV DISTRIBUTION CIRCUIT

Project details.

The numbers that defined the work.

Voltage 12.47 kV

Length 380 miles

Work types Pole replacement · Underground · Wildlife protection

Crews 6 full-time + 2 flex

Duration 30 month program

Region Lower Midwest (MISO)

The challenge we walked into.

A MISO distribution utility needed to strengthen 380 miles of older 12.47 kV distribution circuits — driven by reliability targets and grid modernization filings with their regulator. The work had to happen on a schedule the regulator approved, with strict customer-notice and outage-minimization requirements.

How we approached the work.

The decisions that kept us on schedule and got the outcome the client needed.

01

Six full-time crews

Six crews assigned to the program full-time, with two additional flex crews available during peak windows. A predictable schedule meant predictable rate-case filings for the utility.
02

Multiple types of work

Composite pole replacement on the highest-risk sections, underground conversion in dense neighborhoods, and wildlife protection across the whole program.
03

Strict customer notice

Outage scheduling built around the customer-notice windows the regulator required. Zero notice violations across the program to date.

What the client got.

Year-1 work (130 miles) closed on schedule. Year-2 (140 miles) finished 12 days ahead of schedule. Year-3 (110 miles) is in progress with the same full-time crew team.