Car Wash Energy Procurement in Illinois

Car washes are an energy-intensive small-commercial account with a distinctive two-commodity profile: natural gas to heat water and electricity to run motor-heavy equipment. For Illinois operators — where winter water heating adds real gas load — procuring both commodities and watching demand pays off.

Who this is for

Owners and operators of Illinois car washes — express, full-service, and self-serve — including multi-site chains. Energy is a notable operating cost for these facilities, and the load is more equipment-driven than floor-area-driven.

The car wash load profile

• Natural gas for water heating — significant, and seasonally higher in Illinois winters. The gas utility depends on location (Nicor in most suburbs, Peoples in Chicago).
• Motor-heavy electricity — pumps, blowers, conveyors, and vacuums. Simultaneous operation creates peaks.
• Demand (kW) exposure — on demand-billed rate classes, those peaks can be a meaningful demand charge, separate from the energy rate.

What drives the demand peak

A car wash is one of the more motor-dense small-commercial buildings you will find. The billed peak is set by the highest interval of electricity draw in the month, and at a wash that moment usually arrives when several motors run at once — high-pressure pumps, reclaim pumps, the conveyor, and a bank of dryer blowers all energized while a car moves through. Blowers are frequently the single largest contributor because dryer horsepower is high and the motors start under load. When multiple pieces start simultaneously, the inrush can briefly push draw well above the steady running level, and if that spike lands inside a metered interval it can set the month's demand charge. This is why two washes with similar water volumes and similar energy bills can carry very different demand charges — the difference is in how their equipment starts and overlaps, not in how many cars they wash.

Demand is a real lever here

Because the load is so motor-driven, managing peaks — through equipment sequencing, soft starts, or controls, where feasible — can affect the bill independently of the supply rate. Staggering blower and pump starts so they don't all energize in the same interval, for example, is a common approach, though whether it helps depends entirely on the equipment and the wash's throughput. In the ComEd/PJM zone, the site's capacity tag (PLC) — driven by draw during regional peak hours — also carries peak behavior into the supply cost for a full delivery year, so a summer-afternoon peak can echo across twelve months of capacity charges. Interval data shows whether the opportunity exists. Nothing here promises a specific reduction; it depends on how the site operates.

The gas side deserves equal attention

The winter water-heating load is easy to underweight because the electric equipment is more visible, but in an Illinois winter the burner that keeps wash water at temperature can be a substantial and seasonal natural gas cost. Both commodities are worth procuring, and because they sit on different utilities with different renewal timing, they are handled as two tracks rather than one contract.

What to watch for

• Holdover rates at renewal. A supply contract that lapses past its end date can drop to a month-to-month rate; track end dates on both the electric and gas accounts.
• Load additions that shift the rate class. Adding tunnels, bays, or heating capacity can move a site across a demand threshold into a different rate class — check the class after any equipment expansion.
• The utility, not the supplier, keeps the lights on. Choosing a supplier changes only the supply charge. ComEd or Ameren still delivers the power, maintains the service, and restores outages.

Chains and portfolios

Multi-site operators are best handled as a grouped multi-location procurement, grouping by utility and aligning renewals so no site rolls to a post-expiration rate. Because sites can straddle ComEd and Ameren and more than one gas utility, a chain usually resolves into a few coordinated groups on a shared renewal calendar.

Getting started

Provide a recent electric and gas bill (and interval data where available) for a car wash, and the account or chain can be reviewed and priced on matched terms through the procurement process. No savings figure is promised in advance.