Office Building 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 office buildings use?

CBECS 2018 puts offices at about 13.6 kWh per square foot per year (median 10.1); the average office building uses about 234,000 kWh a year.

Illustrative site	Annual use	Est. peak demand	Est. capacity tag	Capacity cost at 2026/27 price	Value of 0.5¢/kWh
10,000 ft²	136,000 kWh	35 kW	29 kW	$3,523/yr (≈2.6¢/kWh)	$680/yr
50,000 ft²	680,000 kWh	173 kW	147 kW	$17,617/yr (≈2.6¢/kWh)	$3,400/yr
150,000 ft²	2.04 million kWh	518 kW	440 kW	$52,850/yr (≈2.6¢/kWh)	$10,200/yr

How these numbers are built: annual use = 13.6 kWh/ft² (EIA CBECS 2018 Table C14, office (mean; median 10.1)). Peak demand assumes a 45% load factor; the capacity tag assumes 85% 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

Ventilation is the largest office electric end use in CBECS (about 28%), then lighting (17%), computing (11%) and cooling (10%).

When the load peaks — and why that matters for price

Median office operating hours are 45 a week: a weekday daytime profile that peaks on summer afternoons. Buildings with partial post-pandemic occupancy often still run HVAC as if they were full.

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 45% load factor and about 85% of the site peak landing in those hours, capacity alone works out to roughly 2.6¢ 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 office buildings in Ohio buy electricity

Single-tenant offices usually buy standard fixed products; multi-tenant landlords buy base-building (common area and central HVAC) power and may resell or allocate it to tenants under the lease.

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

Office buildings in NOPEC, Columbus or Cincinnati aggregation areas may already be enrolled on the aggregation price if they are under 700,000 kWh a year and never chose a supplier.
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 office buildings cut electricity costs

Re-set HVAC schedules and ventilation rates to actual occupancy (badge data is a good source).
Retro-commission the building automation system: fix simultaneous heating/cooling and overridden schedules.
Upgrade to LED with occupancy and daylight controls.
Tie server-room cooling to its own efficient unit instead of running the whole building overnight.

Office buildings by Ohio metro

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

FAQ

How much electricity does an office building use?

CBECS 2018 reports about 13.6 kWh per square foot per year on average, so a 50,000 ft² office would use roughly 680,000 kWh.

What is the biggest electric load in an office?

Ventilation fans (about 28% of office electricity in CBECS), followed by lighting.

Who buys electricity in a multi-tenant office?

It depends on the lease and metering: the landlord buys common-area and central-system power; tenants on their own meters can buy their own supply.

Sources

Operating evidence for the next contract

For office buildings, 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 office building 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. Tie server-room cooling to its own efficient unit instead of running the whole building overnight. 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.