BESS Calculator
Industrial decision-support for Solar + Battery sizing
Estimate recommended capacity, PCS power, savings stacks, and finance fit from your operating conditions—not a toy battery estimator.
Industrial operating inputs
Decision-support model for C&I BESS screening. Final sizing follows interval data, SLD review, and site survey.
Intelligent recommendation
Confidence: High · Finance fit: Hybrid / PPA-style
Battery size
450 kWh
Usable capacity
400 kWh
PCS / inverter
250 kW
Chemistry
LFP
Cycles / year
370
Peak shaving
150 kW
Utilization
66%
Annual savings
₹13,63,586
Indicative CAPEX
₹1,12,50,000
Payback
8.3 yrs
ROI
12.1%
CO₂ reduction
70.2 t/yr
Demand charge savings
₹7,69,500/yr
Energy / TOD value
₹2,34,986/yr
Diesel savings
₹3,59,100/yr
Why this recommendation
- • Peak response sized near 150 kW based on maximum demand (850 kVA), contract demand, and day/night load spread.
- • Backup requirement of 1.5 h on 25% critical load implies ~338 kWh usable energy.
- • Existing / planned 750 kWp solar drives shifting energy of ~190 kWh/day into evening or peak windows.
- • Time-of-Day tariff enabled — EMS will prioritize charge/discharge around peak windows.
- • Demand charge savings estimated from ~143 kVA reduction at ₹450/kVA.
- • DG available — hybrid mode assumed to cut short-outage diesel starts and improve loading.
Daily load, solar & battery dispatch
Battery SOC through the day
Demand reduction (kVA)
Cashflow & ROI timeline (30-year horizon)
Need interval-data grade modeling?
We’ll refine dispatch using your load curves and tariff schedule.