Scenario 2 — With SES 16.07kWh Battery
Daytime:
15 kWh stored
Night:
12.8–14 kWh supplied by battery
Grid import minimal.
Daily retail cost avoided:
~Rs 600–650
Annual savings:
Rs 220,000–240,000 (depending on load profile)
Payback Comparison Table
| Metric | Without Battery | With 16.07kWh Battery |
|---|---|---|
| Export dependency | High | Low |
| Retail import at night | High | Reduced |
| Daily arbitrage loss | ~Rs 525 | Near zero |
| Annual loss under net billing | ~Rs 190k | Avoided |
| Tariff escalation risk | High | Hedged |
| Transformer constraint exposure | Higher | Lower |
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