Coldwater Board of Public Util

What This Utility Data Tells You

Coldwater Board of Public Util is a municipally-owned utility operating in Michigan under EIA identifier 3915. It reports service to approximately 7,701 customer accounts and generated about $0.05 billion in annual electric revenue, with a service footprint spanning 1 ZIP code. Being municipally owned, the utility answers to a local board or city council rather than a state commission, and carries a federal income tax exemption.

In 2023, the average Coldwater Board of Public Util customer experienced 33.8 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI, the average number of outage events per customer, was 0.39 for the same period, so customers statistically faced roughly 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 33.8 minutes, the gap between that figure and the headline 33.8 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Coldwater Board of Public Util, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 159.1 to 33.8 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.