Amps to kVA Calculator

kVA is the unit your DNO and supplier care about on the contract, but operations teams usually live in amps day to day on the floor. The conversion sits behind every Authorised Supply Capacity (ASC), Maximum Import Capacity (MIC) and Maximum Export Capacity (MEC) decision, every transformer specification, and every generator sizing exercise on a commercial or industrial site. Get the conversion wrong at design stage and the site either chokes at peak demand or pays for headroom on the bill that never gets used in production.

Availability Charges scale linearly with the kVA you have agreed with the DNO, and they bill every month whether you draw the capacity or not. On a 1,000 kVA HV connection a 20% over-spec can mean four to five figures per year of waste, year after year, against an actual peak that never gets close. Reviewing kVA against measured half-hourly demand is one of the highest-return exercises an energy manager can run.

Purely Energy reviews MIC, MEC and capacity bands for portfolio clients as standard practice. We pull twelve months of HH data, plot demand against agreed capacity, and where there is genuine headroom we manage the DNO process to right-size the contract end-to-end. The calculator is the engineering check; the application and the contract change are where the bill actually moves, and for a multi-site business that exercise often pays back in a single quarter once a few sites are right-sized together.