kWh vs kVAh — what's the difference and why your bill uses one or the other

Tariffs & billing · 5 min read · Updated 2026-03-15

TL;DR

kWh measures real energy. kVAh measures apparent energy (real + reactive). Commercial utilities bill in kVAh because it reflects network load. Improve power factor to make kWh ≈ kVAh and the surcharge disappears.

Formula in one line

kVAh = kWh ÷ PF. So at PF = 1.0, kVAh = kWh. At PF = 0.80, kVAh = 1.25 × kWh.

Frequently asked questions

How do I know if I'm billed in kWh or kVAh?

Check your monthly bill. 'Energy charge' at the 'unit rate' in kVAh indicates kVAh billing. Contact your utility if unclear.

Related from Enlog

Power factor correction basics EnPro three-phase meter

More from Enlog Learn

Prepaid electricity meter

A prepaid electricity meter lets tenants, PGs and co-living owners pay for power upfront — like a mobile recharge. Here's how it works, who needs it, and how to choose one.

Reduce PG electricity bill

PG electricity bills can eat 20–30% of revenue. Learn the exact playbook PG owners use to cut bills and recover 100% cost from tenants — fairly and automatically.

Smart vs traditional meter

Smart meters read, report and control electricity consumption remotely. Traditional meters only spin. Here's the full comparison for PG owners, offices and homes.

How to do energy audit

An energy audit maps every kWh your building consumes. Learn the 7-step professional audit process used for hotels, malls, offices, hospitals and factories in India.

Common area billing PG

Corridors, lifts, pumps, gyms — who pays? Learn the fair, transparent way PGs split common-area electricity bills among tenants using room-wise prepaid meters.

VRV/VRF billing

VRV/VRF systems serve many zones from one outdoor unit — billing each zone is tricky. Here's how modern IoT metering attributes VRV consumption per room or per tenant.