Case study · Induction-furnace billet plant · Time-of-day tariff
Re-planning melts around tariff bands cut peak-band energy from 13.0% to 6.3%, worth ₹40–50 lakh a year.
Evidence: Measured · ₹40–50 lakh a year
- Industry
- Induction-furnace billet plant
- System
- Time-of-day tariff
- Data used
- Feeder energy data, HT bill tariff bands
13.0% → 6.3%Share of energy used in the peak tariff band
₹40–50 lakha year, durable
13,43,742 kWhenergy moved (plant report)
What was found
Second-shift melting followed the shift clock and ignored the utility’s tariff bands. Charging and hold timing had never been planned against the tariff structure.
What was done
The melt plan was re-sequenced around the tariff bands, with charging and holds timed to avoid melting in the peak band. The pollution blower was interlocked to the furnace, air pressure was stepped down and cooling-tower fans were staged. No new equipment was needed.
Cost and benefit
| Peak-band share of energy | 13.0% before, 6.3% after |
|---|---|
| Energy moved | 13,43,742 kWh (plant report) |
| Money saved | ₹40–50 lakh a year, durable |
| Pollution blower, furnace off | 70.4 kW to 8.7 kW, about ₹1.03 lakh a yearSeparate, not added |
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