Energy & Sustainability calculator

Chiller Energy Cost Calculator

Chiller energy cost helps facilities teams evaluate HVAC load, process cooling, setpoint changes, free cooling, and chiller sequencing. It turns metered or modeled chiller kW into total and unitized cost for the period.

What this calculator does

  • Estimate chiller electricity cost from average chiller demand, runtime, electricity rate, and cooling output basis.
  • a facilities or energy manager needs to estimate cooling electricity cost
  • Returns the chiller energy cost for the selected facility, line, product, project, or reporting boundary.

Formula used

  • Chiller electricity used = average chiller electrical demand × chiller runtime
  • Total chiller electricity cost = chiller electricity used × blended electricity rate
  • Chiller cost per served unit = total chiller electricity cost ÷ cooling tons, batches, or units served

Inputs explained

  • Average chiller electrical demand: Use metered chiller kW, plant kW/ton × load, or BAS trend data.
  • Chiller runtime: Use operating hours for the chilled-water plant, process loop, or HVAC period.
  • Blended electricity rate: Use the applicable electricity rate including demand allocation if desired.
  • Cooling tons, batches, or units served: Use cooling tons-hours, batches, rooms, or production units served if unitized cost is needed.

How to use the result

  • Use it for energy management, sustainability reporting, utility-cost review, project screening, compliance planning, or operational performance tracking.
  • It does not replace certified emissions inventories, utility tariff analysis, engineering M&V studies, or regulatory reporting review.

Common questions

  • What does the chiller energy cost calculator tell me? It converts the stated energy, carbon, utility, water, waste, or project assumptions into the chiller energy cost result shown on the page.
  • Which data should I enter? Use values from utility bills, submeters, emissions-factor tables, production records, supplier data, project estimates, or approved reporting workbooks for the same boundary and period.
  • How should I use the result? Use it to compare projects, support reporting, prioritize audits, update product costing, estimate savings, or prepare a business case before committing resources.
  • When is this only an estimate? Treat it as an estimate until final tariffs, emissions factors, production allocation, metering accuracy, weather or production normalization, and project performance are confirmed.

Last reviewed 2026-05-12.