Car Wash Electricity Costs in Ohio: 2026 Buying Guide

Updated October 15, 2026Ohio Commercial Energy editorial teamHow we review content Book a free 15-min bill review

How much electricity do car washes use?

EIA does not publish car washes separately (CBECS groups them in “other service”). An engineering study of about 50 wash systems (MDPI Sustainability, 2025) estimated equipment electricity at about 1.5 kWh per car for tunnels, 1.3 for in-bay automatics and 0.9 for self-serve.

Illustrative site	Annual use	Est. peak demand	Est. capacity tag	Capacity cost at 2026/27 price	Value of 0.5¢/kWh
3,000 ft²	36,600 kWh	14 kW	7 kW	$837/yr (≈2.3¢/kWh)	$183/yr
5,000 ft²	61,000 kWh	23 kW	12 kW	$1,394/yr (≈2.3¢/kWh)	$305/yr
8,000 ft²	97,600 kWh	37 kW	19 kW	$2,231/yr (≈2.3¢/kWh)	$488/yr

How these numbers are built: annual use = 12.2 kWh/ft² (EIA CBECS 2018 Table C22, 'Other service' (broad group that includes car washes). Not car-wash-specific.). Peak demand assumes a 30% load factor; the capacity tag assumes 50% of that peak falls in the grid's summer peak hours. Capacity cost uses PJM's 2026/27 clearing price of $329.17/MW-day (about $120 per kW-year) before utility scaling factors. These are illustrations for sizing a decision — your own bills and interval data are what suppliers price.

Where the electricity goes

Dryers (blowers) are the largest electric load, followed by high-pressure pumps, conveyors, vacuums and water heating if electric. Blower packages commonly use several 10–30 horsepower motors.

When the load peaks — and why that matters for price

Load comes in bursts as each car passes through, concentrated on weekends and after snow or pollen events. Starting several blower motors at once can set the monthly demand peak.

In Ohio's PJM market, the capacity part of your generation cost is set by how much you use during the grid's few highest summer peak hours. With a 30% load factor and about 50% of the site peak landing in those hours, capacity alone works out to roughly 2.3¢ per kWh at the 2026/27 price of $329.17/MW-day — compared with about 0.2¢ at the 2024/25 price of $28.92. That jump, not the energy price, explains most of the 2025–2026 increase in Ohio business electricity bills.

How car washes in Ohio buy electricity

Most car washes are small-commercial accounts. Because demand charges are a big share of the bill, compare supply offers and also check whether a different utility rate schedule fits your load.

If you…	Usually consider
need a fixed monthly budget	a 12–36 month fixed price with capacity included (fixed vs variable)
can move load away from summer peak hours	a product that passes capacity through at cost, so reducing your capacity tag lowers your bill
use more than 700,000 kWh a year at a site	an interval-data RFP, block-and-index structures, and HB 15's behind-the-meter options
are 700,000 kWh a year or less and never chose a supplier	first check whether you're already in a community aggregation program

Ohio rules that affect this industry

Winter salt season can make January–March your busiest months; make sure your contract volume band covers it.
Supplier choice applies to customers of AEP Ohio, Duke Energy Ohio, AES Ohio, Ohio Edison, The Illuminating Company and Toledo Edison. Municipal-utility and electric-cooperative customers generally can't choose a supplier.
Ohio does not charge sales tax on electricity; the per-kWh excise tax does appear on bills.
As of 2026, Ohio's utilities do not offer general business efficiency rebates, so upgrades must pay back on bill savings (plus any federal tax treatment).
Under HB 15 (effective August 14, 2025), suppliers must send two notices before a fixed-rate contract rolls to a variable rate — but only to accounts with demand of 25 kW or less. Larger sites should track their own expiration dates.

Ways car washes cut electricity costs

Use soft-starts or VFDs on blower motors and stagger their starts.
Tune dryer run time to vehicle length and speed.
Use reclaim-water systems to reduce pumping and heating energy.
Put vacuums on timers or demand-based controls.

Car washes by Ohio metro

Single-site cost models by city and multi-site buying guides by county:

FAQ

How much electricity does a car wash use per car?

An engineering study estimated about 1.5 kWh per car for tunnel washes and 0.9 for self-serve bays, equipment only.

What’s the biggest electric load at a car wash?

The dryer blowers.

How can a car wash lower its demand charge?

Soft-start or VFD blowers and staggered motor starts.

Sources

https://www.mdpi.com/2071-1050/17/4/1384
https://www.carwashmag.com/dryer-systems-april-2023/
https://www.carwash.com/managing-carwash-energy-costs/
PJM capacity auction results: https://www.pjm.com/markets-and-operations/rpm

Operating evidence for the next contract

For car washes, an electricity quote should reflect the actual operation rather than a generic business category. Give the reviewer the opening schedule, continuously required systems, planned equipment changes and the responsible legal customer. A national building benchmark can frame a question, but cannot prove the usage or saving at your facility.

Evidence to review	Decision it supports
Current operating schedule and required service levels	Identify whether the quoted load shape represents the next term, rather than last year’s business
Equipment and controls associated with car wash operations	Separate a procurement question from an engineering or maintenance question
A committed expansion, closure or tenant/ownership change	Review usage tolerance, assignment and site add/delete rights before signing
Written supply inclusions and exclusions	Distinguish an energy-only offer from a product that includes capacity or other components

Separate safe operating changes from price decisions

Use an appropriate facility specialist to validate technical changes. Put vacuums on timers or demand-based controls. Treat that as a potential review item, not a guaranteed saving or permission to alter safety-critical settings. Medical, food, process and temperature requirements take precedence over an energy target.

Retain a base case without assumed rebates or unapproved tax benefits. If a project materially changes electricity use, ask the supplier how it affects the contract rather than silently carrying the old consumption profile forward. A lower supply price and reduced consumption are separate effects and should not be counted twice.

Keep the bid review practical

Compare at least the proposed start date, included components, monthly fees, renewal clause, exit rules and the treatment of expected load changes. Ask who is responsible for enrollment and what happens if a meter cannot switch on the expected date. An adviser should be able to explain why staying on the current arrangement may be appropriate.

The browser-only comparison tools keep inputs private. Start an Ohio electricity inquiry with the utility and question, without bills or account identifiers. For the common vocabulary behind the comparison, consult PUCO’s bill definitions.