Powerfrill offers advanced Battery Energy Storage Systems designed to meet the energy needs of off-grid homes, remote areas, commercial buildings, industrial operations, public infrastructure, and EV charging stations. Our BESS solutions combine high performance, safety, and scalability to deliver reliable power, reduced costs, and sustainable operations.
Below are standard specifications & features you should expect / specify for a modern BESS. Powerfrill’s systems adhere to or exceed these benchmarks.
Specification | Typical / Target Value | Purpose / Benefit |
Capacity (Energy Storage) | From 5 kWh up to MWh-scale is 20 MWh, 40 MWh, 100 MWh+… | Indicates how much stored energy is available for use. Determines duration of backup or continuous supply. |
Power Rating | Sizes from kW to MW ratings is 50 kW, 500 kW, 1 MW+… | Determines how much load the system can support at any moment (how fast it can discharge). |
Power-to-Energy Ratio (C-rate) | Varies is 0.5C, 1C, 2C+… | Determines how quickly the battery can be charged/discharged. High C-rate = faster response. |
Depth of Discharge (DoD) | Typically 80-95 % for Li-ion; lower for other chemistries | Higher DoD lets you use more of the battery energy without harming lifetime. |
Round-Trip Efficiency | ~85-95 % | What fraction of input energy is available for use after losses. |
Cycle Life | 4,000-10,000 cycles (if large Li-ion / LFP); longer for flow battery etc. | Determines how long the BESS will perform before capacity degrades significantly. |
Calendar Life | Typically 10-20 years | Ageing over time even if the battery is not heavily cycled. |
Operating Temperature Range | −20 °C to +50 °C (depending on system); with thermal management | Ensures performance and safety in different climates. |
Safety & Certifications | UL 9540 / UL9540A, IEC 62619, IEC 61427, NFPA / local codes etc. | Ensures system meets national/international safety, fire, environmental, and electrical standards. |
Monitoring & Management | Integrated Battery Management System (BMS), Energy Management System (EMS), remote monitoring | For live analytics, cell balancing, safety, optimised operation. |
Power Conversion | Bi-directional PCS/inverter; AC / DC coupling depending on use case | To convert between battery’s DC and the AC load/grid; allows flexible system configurations. |
Modularity & Scalability | Modular battery / cabinet units; containerised systems for large scale | Makes installation easier; allows scaling up as demand grows. |
Maintenance & Warranty | ≥5-10 years warranty typical; warranty on capacity retention (e.g. ≥80 % after X years/cycles) | Important for reliability and lifetime cost of ownership. |
Typical Product Ranges which we are providing depending on applications
Use Case | Capacity / Power | Configuration / Notes |
Residential / Off-Grid Home | ~5-20 kWh, with ~3-10 kW power rating | For backup during nighttime; grid-independent solar + storage; ability to run essential loads. |
Small Commercial / Public Infrastructure | 50-500 kWh, 50-200 kW | For malls, clinics, schools, remote sites; supports partial load or peak load shaving. |
Large Commercial / Industrial | 1-5 MWh, 0.5-3 MW | For factories, data centres; to handle demand charges, intermittent grid supply, stabilise operations. |
Utility / Micro-Grid & Grid Services | 10-100 MWh+, multi-MW power | To support solar farms, EV charging hubs, whole communities; providing grid‐form, frequency & voltage regulation, long-duration backup. |
Powerfrill’s BESS systems include:
To ensure maximum safety, performance, and reliability:
PowerFrill’s BESS performance is backed by: