The Ratchet Clause Trap: How One Bad Month Costs $150K/Year

A single 15-minute demand spike in January can lock your facility into inflated billing for the next 11 months. Here’s how ratchet clauses work—and how to avoid them.

What Is a Ratchet Clause?

Most federal facilities pay two types of charges on their utility bills:

Energy charges: What you actually used (measured in kWh)
Demand charges: Your peak usage during any 15-minute window (measured in kW)

Demand charges can represent 30–60% of your total bill—but they’re based on a single moment each month.

The ratchet clause makes it worse.

If your utility contract includes a ratchet clause (also called a “minimum demand” provision), you don’t just pay for your actual peak each month. You pay for the greater of:

Your actual peak demand this month, OR
85% of your highest peak from the past 12 months

How This Costs You Money

Example: The January Spike

January: A chiller startup coincides with a grid voltage sag. Your facility hits a 15-minute peak of 5,000 kW.

February–December: Your normal peak is only 3,800 kW.

Without ratchet clause: You pay demand charges based on 3,800 kW each month.

With ratchet clause: You pay demand charges based on 4,250 kW (85% of 5,000 kW) every month—even though you never use that much again.

The cost: At $15/kW/month, that extra 450 kW costs you $74,250 per year—for capacity you never used after January.

How to Check If You Have a Ratchet Clause

Step 1: Pull your utility tariff (usually available on your utility’s website under “Rate Schedules”)

Step 2: Look for language like:

“Minimum demand”
“Ratchet provision”
“85% of annual peak”
“12-month rolling maximum”

Step 3: Compare your billed demand to your actual demand

If your billed demand stays suspiciously consistent month-to-month (even when your usage varies), you’re likely in a ratchet.

How to Avoid Ratchet Penalties

Strategy 1: Identify and eliminate anomalous peaks

Most ratchet-triggering peaks aren’t from normal operations—they’re from:

Equipment startups at the wrong time
Grid voltage sags forcing motors to draw excess current
Power factor penalties creating reactive power spikes

Our forensic analysis identifies which peaks are anomalies vs. legitimate operational needs.

Strategy 2: Control when large loads start

If you can delay chiller/pump startups by 30 minutes to avoid coinciding with other loads, you can prevent ratchet-setting peaks.

Requires: Real-time monitoring and automated load controls

Strategy 3: Challenge grid-caused peaks

If your peak was caused by a utility-side voltage drop (not your equipment), you may be able to dispute the charge.

Requires: Time-synchronized data proving the utility caused the spike

What This Looks Like in Practice

Facility: Mid-size federal installation

Problem: January chiller startup during grid voltage sag created 5,200 kW peak

Ratchet baseline: 4,420 kW (85% of 5,200) for next 11 months

Normal peak: 3,700 kW

Excess demand billed: 720 kW × 11 months × $15/kW/month = $118,800 wasted

Solution: Forensic analysis identified the spike was grid-caused + poor power factor. Utility agreed to remove ratchet penalty after we provided synchronized voltage data.

Savings: $118,800 recovered