Sioux Center Weighs 7% Electric Rate Hike as Wholesale Costs Climb

Between 2015 and 2025, the average residential electric bill in Sioux Center, Iowa, rose by only about 9%. That decade of stability is about to end.

In June 2026, the Sioux Center City Council approved the first reading of an ordinance that would raise electric utility rates by 7% later that summer, with another 7% increase scheduled for the following year. The decision, reported by KTIV and Sioux County Radio, was driven by forces largely outside the small northwest Iowa community's control.

The numbers behind the increase

Sioux Center Municipal Utilities serves more than 2,760 homes and businesses and is one of 61 member communities within Missouri River Energy Services (MRES), the wholesale power provider that supplies electricity across four states. Tim Miller, MRES Director of Rates, told the council that the largest single factor behind the increase is the rising cost of purchasing electricity.

About 23% of Sioux Center's power comes from federal hydroelectric generation along the Missouri River. The remainder is supplied through MRES generation and energy market purchases — the portion most exposed to inflation, transmission expenses, and volatile market prices.

According to city officials, an average family of four would see roughly a $7.00-per-month increase under this year's proposal. A longer-range utility study also modeled potential additional increases in 2028 and 2029, though those years are not part of the current ordinance.

Why rates stayed flat — and why they can't anymore

City officials repeatedly stressed that Sioux Center's rates remained relatively stable over the past decade, and MRES comparisons showed the community still has some of the lowest residential and commercial electric rates in the region. That track record matters. A town that held the line for ten years is not recklessly hiking rates now.

But stability in the past does not guarantee stability ahead. Wholesale power costs, transmission expenses, and inflation are pushing up the floor under every municipal utility in the MRES network. The proposal also factors in future investments, including Sioux Center's share of a planned 11-megawatt local generation project estimated at roughly $21 million — most of it offset through MRES capacity payments.

Mayor Dale Vander Berg framed the challenge plainly: remaining a place where businesses want to locate requires balancing competitive rates with the realities of running a growing electric system.

The case for — and against — the increase

The conservative instinct on a rate hike is skepticism, and that instinct is healthy. Local governments, even small and well-run ones, face constant pressure to spend, and ratepayers are the ones who pay.

Critics of the increase can fairly ask whether the city has exhausted every efficiency before passing costs to residents — and whether the long-range study's projected 2028 and 2029 increases signal a habit of planned escalation rather than a one-time adjustment. Those are legitimate questions the council will face at its next two readings, as we have noted in our Energy Independence coverage.

But the counterargument is equally grounded in conservative principle: government should price its services honestly. A municipal utility that holds rates artificially low by deferring maintenance or underfunding reliability is not doing ratepayers a favor — it is storing up a larger bill for later. The $7-a-month increase is modest, the rationale is documented, and the city has a decade-long record of restraint to weigh against it.

The honest concern is not the size of this increase but the pattern it may start. If 7% becomes an annual habit, a decade of 9% total growth will look like a bargain. The council owes residents a clear answer about what the long-range trajectory means — and whether the 2028 and 2029 increases in the study are a warning or a plan.

What happens next

The council approved only the first reading. Two additional meetings over the summer will give residents a chance to weigh in before the ordinance is finalized. Each reading is a separate opportunity to ask whether the city is doing enough to control costs or simply passing them along.

For a community of roughly 8,200 in Sioux County, Iowa, the stakes are concrete: every dollar added to a monthly bill is a dollar not spent at a local business or saved for a family. The Taxes & Spending debate that animates state politics lives just as fiercely at the utility-board level.

Sioux Center's leaders have, so far, made a defensible case. The test will be whether the next two readings sharpen it — or expose it as the first step in a much steeper climb.