Contract Demand Headroom Checker
. Free, runs in your browser.
Your bill may be charging for demand you never actually draw. Check whether your contract demand is too high, or whether a peak month is already pushing you into penal billing.
Runs entirely in your browser. Nothing you type is uploaded or stored.
The formula we use
billedFloor = f/100 * CD
If MD < billedFloor: headroomBilled = billedFloor - MD
indicated safe CD = MD / (f/100), rounded UP
monthlySaving = (CD - indicatedCD) * (f/100) * demandRate
If MD > CD: overrun = MD - CD
- Screening only, 12-month history and growth plans decide.
- Tariff rules, security deposit and approval process can change whether a reduction is worth applying for.
Typical numbers
Reference figures to sanity-check your inputs. Your own bill and equipment data always win.
Load factor is monthly units divided by maximum demand times hours in the month, using kWh with kW MD or kVAh with kVA MD.
Source: Energy = demand x time
For a 30-day billing month, every 1 kW of recorded maximum demand represents 720 kWh of full-time use.
Source: Energy = demand x time
A 100 kVA maximum demand over a 30-day month has a 72,000 kVAh full-load denominator.
Source: Energy = demand x time
Billing demand should be read from the tariff order because many Indian tariffs use actual MD, a percentage of contract demand, or a sanctioned-load floor.
Source: MERC/MSEDCL tariff order
Common questions
What is contract demand in an electricity bill?
Contract demand is the kVA demand reserved for your connection. Your bill may charge a minimum demand even when actual maximum demand is lower.
Can I reduce contract demand after one low month?
No. Use at least 12 months of maximum demand and check expansion plans before applying for a reduction.
What happens if maximum demand crosses contract demand?
Many tariffs apply penal billing or higher charges on the excess demand. The exact clause depends on your DISCOM tariff order.