In PJM, part of a demand-metered bill is set by your load during the grid's five busiest summer hours. In New England, it's the single busiest hour of the year. We find out what yours costs, alert your team ahead of likely peak hours, and help you plan what to turn down.
It's based on your load during a handful of peak hours on the whole grid. That number, called your capacity tag, is multiplied by the capacity price and billed for the next 12 months.
Once those hours pass, the number is locked. There's no fixing it afterward, which is why knowing when they're coming matters so much.
Your Peak Load Contribution (PLC) tag is based on your average load during the five highest-load hours on the PJM grid between June 1 and September 30.
Your capacity tag in New England is based on your load during the single highest-demand hour of the year on the ISO-NE system.
We find your current capacity tag and show what it costs you at current prices, so you know what's actually at stake.
During the season, we text and email your team ahead of likely peak hours, so they can cut load during the hours that count.
We help you decide what can come down and for how long, and how it fits with demand response if you're enrolled.
PJM's capacity price went from $28.92/MW-day for 2024/25 to $269.92 for 2025/26, then $329.17 and a record $333.44, and $325.00 for 2028/29, with every auction since the jump clearing at the price cap. At $325, each 1 MW of tag costs about $118,600 a year, so every 100 kW you take off is worth about $11,900. How to reduce your tag.
Load factor compares how much energy you use to how much you'd use running at your peak all month. A low load factor means short, sharp peaks, so demand and capacity charges make up more of your bill. Enter two numbers from your bill to see yours.
Load Factor
Rough guide:
Average Load
kW, averaged across the month
Peak vs. Average
How far your peak sits above your average
Load factor = monthly kWh ÷ (peak kW × 730 hours). As a rough guide, under 40% is peaky, 40% to 60% is moderate, and over 60% is steady. Your actual charges depend on your utility's tariff; a free savings check prices them for your account.
We'll find your current capacity tag, show what it costs at today's prices, and what a plan could take off. Free, no obligation.
Rather talk? Call Jordan at 610-904-9403