Operating profile
From the motor calculator
Gujarat industrial slabs ₹5–9
Awaiting Valid Duty Parameters
Adjust the parameters on the left to compute live hydraulic values, ranges, and sizing verdicts.
Wondering what that pump costs to run?
We audit pump energy use on site and recommend trims, VFDs and replacements that pay back in months — call for an energy check.
Pump energy cost explained
The number that pays for retrofits
Annual energy = input power × running hours × running days; cost = energy × tariff. A 4.19 kW pump at 16 h/day, 300 days and ₹6.5/kWh costs about ₹1.31 lakh a year — and 24×7 duties at higher tariffs reach ₹3–5 lakh per pump. These numbers decide every VFD, trim and replacement decision.
Input power matters more than rated power: a 7.5 kW motor drawing 5 kW duty still costs what it draws, not what the frame says. Use the duty current or the motor calculator to find the real input kW.
Tariffs and duty cycles
Gujarat industrial tariffs run roughly ₹5–9/kWh by slab and demand charges; enter your actual slab. Duty cycle is the multiplier plants underestimate: 16 h/day × 300 days (4,800 h) is typical for a shift-heavy chemical plant; 24×7 processes use 8,760 h.
The calculator splits the result into daily, monthly and annual figures so budgets and payback math both work.
What saves the most
Slowing the pump saves with the cube law — see the affinity calculator — and a high-efficiency motor or a trim can cut 10–25 % of the energy bill. Every 1 kW saved at 4,800 h/year is worth about ₹31,000 annually at ₹6.5/kWh. The VFD payback calculator turns these savings into a payback period, and the LCC calculator adds maintenance and repair to the full picture. Teflow runs on-site pump energy audits across Gujarat — call +91 98251 62709.
Technical & Operational FAQs
Q1.How do I calculate pump electricity cost?
Annual kWh = input power (kW) × running hours/day × running days/year. Annual cost = kWh × tariff. A 4.19 kW pump at 16 h × 300 days is 20,112 kWh, which is about ₹1.31 lakh at ₹6.5/kWh.
Q2.Which power should I use — rated or duty?
Use the power actually drawn at the operating point (input kW at duty), not the motor frame rating. You can get it from the motor calculator’s duty current or from a clamp meter reading at the panel: kW = 1.732 × V × I × power factor ÷ 1000.
Q3.What is the Indian industrial tariff for pumps?
Gujarat industrial slabs typically run ₹5–9/kWh plus demand charges; other states vary. Use your latest bill’s slab rate — the calculator default of ₹6.5/kWh is a typical mid-range figure, adjustable per your bill.
Q4.How much can a VFD save on a pump?
Power follows the cube of the speed ratio: running at 70 % speed uses about 34 % of full-load power. Savings depend on the duty cycle and how much time the pump runs throttled — the VFD payback calculator turns your duty into a payback period.
Q5.How do I reduce pump energy cost?
In order: correct the duty (trim or slower speed), improve efficiency (overhaul or high-efficiency motor), and control the running time (VFD, timers, or duty-standby rotation). Each 1 kW saved is worth roughly ₹31,000 a year at typical Indian tariffs.
Related Engineering Tools
Motor Sizing Calculator
VFD Payback Calculator
Pump LCC Calculator
Affinity Laws Calculator
Pump Repair Service
Energy Efficient Pumping
Need a custom hydraulic audit or specific duty curve verification? Call +91 98251 62709 or Request a Detailed Engineering Quote.