Load Factor Calculator

  • Demand charges are 30–70% of a large commercial bill — load factor determines how much you pay.
  • A business at 35% load factor pays roughly twice the demand cost per kWh as one at 70%.
  • Load factor is calculated using your monthly kWh and peak kW demand.

Enter two numbers from your bill

That's it. Two numbers from your most recent utility bill.

Sample: a 2,500 sq ft retail store

Enter your monthly kWh and peak kW demand to see your load factor grade and what it means for your bill.

How Load Factor Works

Load factor measures how evenly your business uses electricity. It's the ratio of your average demand to your peak demand.

Load Factor = Total kWhPeak kW × Hours
Hours = days in billing period × 24 (typically 720 for a 30-day month)

Why it matters for your bill

A business that draws power steadily (high load factor) costs the utility less to serve than one with sharp spikes. Utilities reward steady usage with lower demand charges per kW.

Load factor also determines how competitive your rate quotes will be. Providers view high-load-factor accounts as more predictable and less risky, which translates to lower per-kWh offers.

A 100% load factor would mean perfectly flat usage, 24/7. A 10% load factor means you're spiking hard but barely using power the rest of the time. Most commercial buildings fall between 30% and 70%.

Load Factor Grades

Where your business falls on the scale determines your demand charge exposure and your leverage when negotiating rates.

<25%
Critical
25–39%
Poor
40–54%
Fair
55–69%
Good
70%+
Excellent

Critical (<25%)

Extreme spikes with low base usage. Demand charges dominate your bill. Typical of seasonal businesses or facilities with unmanaged equipment startups.

Poor (25–39%)

Significant peaks relative to average usage. Common in restaurants, schools, and small retail. Quick wins from staggering equipment and shifting loads.

Fair (40–54%)

Room for improvement but not alarming. Typical of office buildings and mid-size retail. Focus on peak shaving and HVAC scheduling.

Good (55–69%)

Solid usage profile. Providers see you as a desirable customer. Common in hospitals, hotels, and well-managed commercial facilities.

Excellent (70%+)

Near-flat consumption. Best rates and lowest demand charges. Typical of data centers, 24/7 manufacturing, and continuous-process facilities.

Load Factor by Industry

How different business types compare. Load factor is the ratio of your average demand to your peak demand. Demand share is the percentage of your total bill from demand charges.

Data Center

Load Factor88%
Demand Share55%

Manufacturing

Load Factor68%
Demand Share50%

Hospital / Healthcare

Load Factor65%
Demand Share45%

Grocery / Supermarket

Load Factor55%
Demand Share42%

Hotel / Hospitality

Load Factor50%
Demand Share38%

Warehouse / Distribution

Load Factor48%
Demand Share42%

Other

Load Factor45%
Demand Share40%

Office

Load Factor42%
Demand Share40%

Retail

Load Factor38%
Demand Share35%

Restaurant

Load Factor32%
Demand Share30%

School / Education

Load Factor30%
Demand Share32%

How to Improve Your Load Factor

Every point you add to your load factor reduces demand charges and earns better rate quotes. These are the highest-impact strategies.

Stagger equipment startups

Don't turn everything on at once in the morning. Sequence HVAC, lighting, compressors, and production equipment across a 15–30 minute window to avoid a demand spike.

Impact: 5–15% demand reduction

Shift load to off-peak hours

Run high-draw processes (batch manufacturing, EV charging, ice storage) during nights, weekends, or shoulder hours when your facility's overall draw is lower.

Impact: 10–20% demand reduction

Optimize HVAC scheduling

Pre-cool or pre-heat before peak demand windows. Use programmable thermostats and demand-response controls to cap compressor cycling during high-load periods.

Impact: 5–15% demand reduction

Install demand controllers

Automated demand controllers monitor real-time power draw and cycle non-critical loads (water heaters, dehumidifiers, secondary HVAC) when you approach your peak threshold.

Impact: 10–25% demand reduction

Frequently Asked Questions

What is a good load factor for my business?

It depends on your industry. Data centers typically run 85–95%. Manufacturing: 60–75%. Offices: 35–50%. Restaurants: 25–40%. Any improvement of 10 percentage points can reduce your total bill by 8–15%.

How do I find my load factor on my utility bill?

Most bills show total kWh and peak kW demand. Divide kWh by (peak kW × 720) for a 30-day month. Some utilities print load factor directly. If you only see a dollar amount for demand, divide it by the demand rate (typically $8–15/kW) to back into your peak kW.

Does load factor affect my electricity rate?

Yes, significantly. In deregulated markets, providers quote lower per-kWh rates to businesses with higher load factors because they're more predictable and efficient to serve. A high load factor also reduces your demand charges, which can be 30–70% of a large commercial bill.

What causes a low load factor?

Sharp demand spikes — usually from turning on all equipment simultaneously in the morning, running compressors during peak hours, or having a single high-draw process that runs for short bursts. Seasonal businesses (schools, event venues) also tend to have low load factors.

Can I improve load factor without reducing my total consumption?

Yes. Load factor improves when you flatten your usage curve, not necessarily when you use less. Spreading the same kWh more evenly across the billing period — by staggering startups, shifting loads off-peak, or using thermal storage — raises your load factor without changing total consumption.