In a mixed commercial and residential site in the Philippines, the client operates a telephone company and a coffee shop, and also resides on the same property. Continuous, reliable power was vital for both business operations and daily life. The client required a solution that could sustain critical loads around the clock, even during grid outages, and provide multi‑day energy autonomy without reliance on solar production.
1) Provide uninterruptible power with at least two days of autonomy from battery storage alone, without solar harvest.
2) Eliminate dependency on the local power grid and frequent utility interruptions.
3) Replace a previous battery system with unresolved system alarms and reliability concerns.
4) Ensure the new system could consistently handle commercial loads alongside residential demand.
The selected Pytes HV48100 high‑voltage battery system stands out with several performance advantages:
1) Long cycle life: designed for over 6,000 charge/discharge cycles with minimal capacity degradation, supporting 10+years of continuous use.
2) High efficiency: up to 95 % cycle efficiency, maximizing usable stored energy.
3) Fast charging capability: each module can recharge fully in as little as 2 hours with a 2.56 kW peak continuous output per module, ensuring quick replenishment of energy reserves.
4) Scalability and flexibility: supports series expansion (up to 8 sets) for tailored capacity and high‑voltage configurations.
5) Integrated system design: battery pack, high‑voltage control box, and advanced BMS in one cabinet, simplifying installation and ensuring safety.
These characteristics make the HV48100 well‑suited for commercial and industrial energy storage applications requiring high reliability and long life.
To meet the project's requirements, Pytes designed and deployed a high‑voltage energy storage system with the following configuration:
1) Inverters
4 × 30 kWh 3‑phase Solis low voltage inverters
2) Battery Storage
The system includes 8 HV battery groups, each composed of 8 HV48100 BMUs, delivering a total capacity of 327.68 kWh with prismatic LFP cells
3) Renewables
70 kWp solar PV array
The system architecture was optimized for high efficiency and capacity, enabling high‑power output with manageable current levels, improved safety margins, and reduced balance‑of‑system complexity.
1) The Pytes high‑voltage system has been operating smoothly for over two months since installation, providing stable and reliable power to all loads.
2) The client now enjoys zero electricity bills, as the system maintains continuous power even when the grid is unavailable.
3) With Pytes' prismatic cell design and carefully engineered high‑voltage architecture, the system delivers consistent performance, high efficiency, and long‑term operational confidence for both commercial operations and residential use.
This deployment demonstrates how high‑voltage ESS can reliably support demanding applications and deliver true autonomy in environments with unstable utility service.
