Real-World Case Studies
How homes, offices, and factories across Southeast Asia are using battery storage to cut costs and gain energy independence.
Zeroing the bill in Klang Valley
A family of four in Shah Alam paired an 8 kWp rooftop solar system with a Tesla Powerwall 3 to virtually eliminate their electricity bill. Before installation, their average monthly bill was RM 480. After 6 months, their average bill dropped to RM 60.
Key Results
- Monthly bill reduced from RM 480 to RM 60
- Self-consumption rate increased from 40% to 85%
- Battery covers overnight AC usage (2 split units)
- Exported only 3 kWh/day to grid under NEM 3.0
“We were sceptical about the battery adding value on top of solar. But the numbers speak for themselves — we basically eliminated our night-time electricity cost.”
Landed property backup + savings in Singapore
A landed property in Bukit Timah installed a BYD BatteryBox Premium alongside a 6 kWp solar system. The primary motivation was backup power during grid outages, with cost savings as a secondary benefit.
Key Results
- Monthly bill reduced from S$320 to S$140
- Provides 6-8 hours of backup during outages
- LFP chemistry well-suited for Singapore heat
- Estimated 10-year warranty with 80% capacity retention
“After the 2023 outage that lasted 4 hours, we decided backup power was essential. The battery pays for itself in savings while giving us peace of mind.”
Peak shaving for a Bangkok co-working space
A co-working space in Sukhumvit installed three Huawei LUNA 2000 units to shave afternoon demand peaks. Combined with rooftop solar, demand charges dropped by 40%. The system also provides seamless backup for critical IT equipment.
Key Results
- Demand charges reduced by 40%
- System ROI in under 5 years
- 3-phase setup covers all office circuits
- Remote monitoring via Huawei FusionSolar app
Off-grid solar + storage for a Cebu beach resort
A small beach resort on Cebu Island moved to a hybrid solar + battery system to reduce reliance on expensive diesel generators. The Pylontech stack provides reliable evening power for guest rooms and common areas.
Key Results
- Diesel generator runtime reduced by 70%
- Fuel cost savings of ₱25,000/month
- Silent operation improved guest experience
- Stack expandable to 38.4 kWh
“Our guests come for the quiet and the nature. Switching from a noisy diesel generator to silent battery power was the best decision we made.”
Industrial demand management in Jakarta
A garment factory in Cikarang deployed a 100 kWh BYD commercial BESS to flatten demand peaks and reduce their peak demand tariff. Combined with rooftop solar, the factory reduced their overall electricity cost by 25%.
Key Results
- Peak demand reduced by 35%
- Overall electricity cost down 25%
- Battery provides 2-hour backup for critical machinery
- PLN demand tariff savings compound annually
Have a BESS installation story?
We feature real installations from across Southeast Asia. Share your experience — costs, savings, and lessons learned.
Share your story