Data Center 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 data centers use?

Data centers are measured by IT load and power usage effectiveness (PUE), not square feet. The Uptime Institute’s 2025 survey reports an average PUE of 1.54 and a typical rack density near 9 kW.

Illustrative site	Annual use	Est. peak demand	Est. capacity tag	Capacity cost at 2026/27 price	Value of 0.5¢/kWh
250 kW IT load	3.37 million kWh	428 kW	406 kW	$48,826/yr (≈1.4¢/kWh)	$16,863/yr
1,000 kW IT load	13.50 million kWh	1,711 kW	1,626 kW	$195,306/yr (≈1.4¢/kWh)	$67,452/yr
5,000 kW IT load	67.50 million kWh	8,556 kW	8,128 kW	$976,529/yr (≈1.4¢/kWh)	$337,260/yr

How these numbers are built: annual use = IT load × PUE 1.54 (Uptime Institute 2025 average) × 8,760 hours. Peak demand assumes a 90% load factor; the capacity tag assumes 95% 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

At a PUE of 1.54, about 35% of the facility’s energy goes to cooling and power conversion and about 65% reaches IT equipment.

When the load peaks — and why that matters for price

IT load runs 24/7/365, so load factor is very high (often above 85%). Summer peaks come from cooling, which is why PUE rises in hot months.

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 90% load factor and about 95% of the site peak landing in those hours, capacity alone works out to roughly 1.4¢ per kWh at the 2026/27 price of $329.17/MW-day — compared with about 0.1¢ 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 data centers in Ohio buy electricity

Enterprise and colocation data centers buy through RFPs, often on block-and-index or fully indexed products with hedges, and increasingly add renewable energy certificates or PPAs to meet customer requirements.

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

AEP Ohio’s data-center tariff (approved July 2025) applies to new data-center load over 25 MW and requires paying for at least 85% of contracted capacity for up to 12 years; smaller enterprise server rooms are not covered by 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 data centers cut electricity costs

Raise supply-air temperatures within ASHRAE recommended ranges and contain hot/cold aisles.
Use economizer hours — Ohio winters allow significant free cooling.
Retire or consolidate lightly used servers before buying more power.
Plan generator and UPS strategy around PJM emergency events and demand response.

Data centers by Ohio metro

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

FAQ

How much electricity does a small data center use?

A 250 kW IT load at a PUE of 1.54 uses about 3.4 million kWh a year (250 × 1.54 × 8,760 hours).

Does AEP Ohio’s data-center tariff apply to my server room?

Only to new data-center loads over 25 MW in AEP Ohio territory; ordinary enterprise server rooms are billed on standard tariffs.

What PUE should an Ohio data center target?

Uptime’s 2025 survey average is 1.54; newer facilities average about 1.48. Ohio’s climate supports economizer cooling for much of the year.

Sources

Operating evidence for the next contract

For data centers, 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 data center 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. Plan generator and UPS strategy around PJM emergency events and demand response. 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.