At Watts & Ergon , we help industries design optimized solar + battery solutions tailored to their exact energy needs.
Sizing a solar battery system correctly is critical to ensure reliable backup power, maximize savings, and avoid costly under- or over-sizing. Whether you want to store excess solar energy for night use or achieve energy independence during outages, proper battery sizing makes all the difference.
At Watts & Ergon, we help industries design optimized solar + battery solutions tailored to their exact energy needs.
| Appliance / Load | Power Rating (W) | Hours Used / Day | Daily Energy (kWh) |
|---|---|---|---|
| Factory Lighting | 5000 | 12 | 60 |
| Machinery (Average) | 15000 | 8 | 120 |
| HVAC System | 8000 | 10 | 80 |
| Other Loads | 7000 | 6 | 42 |
| Total Daily Consumption | 302 kWh | ||
Decide how many days you want the battery to support your loads without solar input (typically 1–3 days for factories).
| Battery Type | Recommended DoD | Round-trip Efficiency |
|---|---|---|
| Lithium-ion (LiFePO4) | 80–95% | 95–98% |
| Lead-Acid | 50% | 80–85% |
Example:
Daily consumption = 302 kWh
Autonomy = 2 days
DoD = 90% (Lithium)
Efficiency = 95%
Required Capacity = (302 × 2) ÷ (0.90 × 0.95) ≈ 706 kWh
| Factory Size | Daily Consumption | Recommended Battery | Autonomy |
|---|---|---|---|
| Small Factory | 50–150 kWh | 100–300 kWh | 1–2 days |
| Medium Factory | 150–500 kWh | 300–800 kWh | 2 days |
| Large Industrial | 500+ kWh | 1 MWh+ | 2–3 days |
Our experts at Watts & Ergon provide precise calculations, professional design, and turnkey installation.
At Watts & Ergon, we help homes and businesses across Dubai, Abu Dhabi, and the UAE implement energy efficiency solutions that deliver real, measurable savings while maintaining comfort and compliance.
At Watts & Ergon, we specialize in designing, installing, and maintaining advanced Lightning Protection Systems (LPS) tailored to the unique challenges of the UAE environment.
At Watts & Ergon, we specialize in designing, installing, and testing advanced earthing and lightning protection systems that meet or exceed all DEWA and international standards.