Interactive Engineering Tool
Solar & Inverter Sizing Calculator
Determine your required hybrid inverter capacity (kVA), LiFePO4 battery bank (kWh), and solar panels (550W Monocrystalline) with real-time generator fuel savings and payback calculations for Nigeria.
Solar & Inverter Sizing Calculator
Configure your appliances or enter daily energy consumption to size your hybrid inverter (kVA), world-standard battery storage bank (kWh / Ah), solar array, and generator fuel savings.
LED Energy Saving Bulbs
Security Floodlights
Standing / Orbit Fans
1.0 HP Inverter AC
1.5 HP Inverter AC
Inverter Refrigerator
Deep Chest Freezer
Smart TV (43"–65") + Decoder
Home Theatre / Soundbar
Laptops & Chargers
WiFi Router & CCTV System
Water Pumping Machine (0.5 – 1.0 HP)
Duration battery must sustain loads during non-solar hours
Recommended Engineering Spec
3.5 kVA Solar Hybrid
Continuous Load & Surge
3.5 kVA (1655W continuous)
Battery Storage (11.3 kWh Usable Autonomy)
15.36 kWh Bank (600Ah @ 24V)
Solar PV Array
4.4 kWp (8x 550W Tier-1)
9.4 kWh AC
90.2% (Inverter & DC)
96% (LiFePO4)
~75A @ 24V
Estimated Monthly Fuel Savings
₦316,800 / mo
Est. Generator Payback
~1.8 Years
Every system sizing strictly adheres to IEEE 1013 battery autonomy guidelines, IEC 62124 off-grid solar standards, DC/AC breaker protection, and Class-1 grounding.
World-Standard Methodology
How Our Engineering Sizing Works (IEEE & IEC Standards)
Our sizing engine calculates electrical parameters strictly in accordance with IEEE 1013 (Battery Sizing), IEC 62124 (Off-Grid PV Systems), and tropical climate thermal derating.
Continuous & Surge Power Sizing
Pumping machines, refrigerators, and air conditioning compressors draw 2.5× to 3.5× their rated power on startup. Our engine applies active inductive surge multipliers to guarantee inverter stability without nuisance tripping.
Regional Peak Sun Irradiance
Kano and Sokoto receive 5.5 to 5.8 peak sun hours, whereas coastal regions average 3.8 to 4.2 hours. We calibrate PV module kWp and roof area using localized solar radiation and a 0.78 temperature/dust derating factor.
IEEE 1013 Battery & String Architecture
Battery banks are sized accounting for inverter conversion efficiency (92%), DC cabling losses (98%), chemical Depth of Discharge (85% LiFePO4 vs 50% Tubular), Coulombic efficiency, and strict series-parallel voltage string matching (e.g. 4S arrays on 48V DC buses).
Common Questions
Frequently Asked Solar & Battery Questions
How does MATECH calculate battery bank storage capacity?
We calculate battery storage based on your required night or outage energy consumption (kWh AC), adjusted for inverter conversion efficiency (92%), DC distribution losses (98%), electrochemical Coulombic efficiency (96% for LiFePO4, 85% for Tubular), and maximum Depth of Discharge (DoD). Furthermore, our engine verifies string series count (e.g. 4x 12V in series for a 48V inverter) and continuous discharge C-rate limits to protect battery lifespan.
Why is LiFePO4 Lithium recommended over Lead-Acid Tubular?
LiFePO4 batteries deliver 85%–90% usable depth of discharge, 6,000+ charge cycles (10–15 years lifespan), and 96% round-trip efficiency without gassing or acid maintenance. Lead-acid tubular batteries must not be discharged past 50% to avoid rapid plate sulfation, meaning you need roughly double the nominal capacity of tubular batteries to deliver the same usable night autonomy.
Can I start with an Inverter & Battery backup and add Solar Panels later?
Yes. If you choose the “Inverter Backup Only” option, we install a hybrid-ready pure sine wave inverter and battery bank charged via the public grid or generator. Solar panels can be retrofitted seamlessly at any point.
How accurate are the generator fuel savings calculations?
Calculations are benchmarked on average Nigerian fuel pump prices (₦1,100/L petrol, ₦1,400/L diesel) and realistic generator fuel burn curves (e.g. ~1.6 litres/hour on a 5 kVA generator). For most clients, solar amortizes itself within 12 to 24 months.
Do I need a site inspection before procurement?
While this calculator provides an accurate engineering baseline, our certified team performs physical roof azimuth orientation checks, phase load balancing, and harmonic scanning before final commissioning.
Ready to commission your solar power plant?
Bring us your calculated load profile and our engineers will provide a formal Bill of Quantities with certified tier-1 components.