Solar, storage and hybrid plants for industry, with the switchboards built in our own works.
Free tool for HT industrial consumers
Electricity bill analyser
Type in the main figures from one month's HT bill and see your true landed cost per unit, how much of the bill is demand charge, your load factor, and an indicative saving from solar, storage and power-factor correction. Nothing is uploaded; the calculation runs in your browser.
This calculator needs JavaScript. If nothing appears below, enable JavaScript or send us your bill and we will run the numbers for you.
Your numbers
Enter units and total bill to begin. Add demand figures for the full analysis.
—landed cost per unit
—energy charge per unit
Unlock the detailed report
The headline numbers are free. The full breakdown, sizing and payback are emailed to you and unlocked here once you verify your work email.
- Full breakdown of every figure
- System size, capex and payback
- What to do next, flagged by our engineers
- A copy emailed to you, plus one-click request for the free feasibility study
One-time code to your email, nothing else. We do not share your details.
Verified as . The detailed report is below and in your inbox.
Where the figures are on your bill
- Units consumedThe total kWh for the month, sometimes split into peak, normal and night.
- Total bill amountThe net amount payable, after all charges, surcharges and taxes.
- Maximum demand recordedThe highest kVA drawn in any 15 or 30-minute window. This sets the demand charge.
- Contract demandThe kVA you have contracted with the DISCOM. Exceeding it is penalised.
- Energy chargesUnits multiplied by the tariff rate, before fuel surcharge.
- Demand or fixed chargesBilled on kVA, not on units. This is the line storage attacks.
- Power factor penalty or incentiveA penalty if PF is below the DISCOM threshold, an incentive if above.
- Other chargesFuel and power purchase cost adjustment, electricity duty, taxes.
What the numbers mean
Landed cost per unit
Your total bill divided by the units you used. It is always higher than the tariff rate printed on the bill, because demand charges, surcharges and duty are spread over the same units. This is the number to compare against captive solar at ₹2.5–3.5 a unit, not the tariff rate.
Demand charge share
The DISCOM bills you for the highest kVA you drew in any half hour of the month, whether you used it for an hour or every day. On many industrial bills it is a quarter of the total. Storage that discharges during the peak lowers that figure every month, with no dependence on solar or weather.
Load factor
Your average load divided by your maximum demand. A low load factor means short, sharp peaks, which is exactly the shape a battery is good at flattening. A high load factor means steady load, where solar does most of the work and storage is mainly for backup.
What the saving figures assume
- Captive solar covers the share of units you set, at the cost per unit you set, replacing your energy charge rate.
- Storage reduces billed demand by the percentage you set, applied to the demand charges on the bill.
- A power factor penalty is fully recoverable with correction equipment.
- Taxes and duty are treated as fixed. In practice they fall with the bill, which makes the saving slightly larger than shown.
The feasibility study replaces all of these with a twelve-month load profile, your actual tariff schedule and a system sized to your plant.
Why is my landed cost higher than the tariff rate on the bill?
Because demand charges, fuel surcharge, duty and taxes are spread over the same units. The tariff rate is only the energy line; the landed cost is what a unit actually costs you, and it is the number to compare against captive solar.
Which figures matter most?
Units, total bill, maximum demand and demand charges. With those four the analyser gives landed cost, demand share and load factor, which between them say whether solar, storage or both fit your plant.
Is my bill data sent anywhere?
No. The calculation runs in your browser. Figures reach us only if you click through to the feasibility study, where they are placed in the form for you to review before sending.
