To determine the required PV capacity, the tool calculates total daily energy demand adjusted for inverter efficiency and system losses: Then it adds your selected oversizing margin to compensate
As you can see, for an average household using 30 kWh/day, you would need approximately 20 solar panels in a location with 5 peak sunlight hours. If your location receives only 3 hours of sunlight per
Free DIY solar sizing calculator to estimate how many solar panels, batteries, and inverters you need for your off-grid system.
Using your daily energy usage and Peak Sun Hours, and assuming a system efficiency of 70%, the calculator estimates the Wattage required for your off-grid solar system''s solar array.
Most homeowners need between 15-25 solar panels to power their entire home, but this number varies significantly based on your energy usage, location, and roof characteristics.
In this guide, we''ll walk through everything you need to know about 6kW off-grid inverters: how they work, what they can power, how many solar panels and batteries you''ll need, and
Ideal for basic off-grid needs like lights, a small fridge, and charging devices. For users consuming 5–8 kWh/day, consider a solar array in the range of 1,500–2,400W (approx. 4–7 panels) to cover typical
Calculate how many solar panels you need based on your electricity consumption and location.
For a 6kW solar system, you''ll need to figure out how many of these panels you''ll need to meet your energy needs. Let''s use an example to calculate the number of panels needed for a 6kW
To calculate how many solar panels you need for a 6-kW system, simply divide 6,000 watts (W) (6 kW equals 6,000 W) by the wattage of the solar panels you''re using.
PEES Power Systems is a leading provider of advanced energy solutions in South Africa and Africa. We specialize in microgrid systems, solar photovoltaic (PV) power generation, BESS (battery energy storage systems), grid‑tied / hybrid / off‑grid inverters, PCS power conversion systems, EMS energy management systems, BMS battery management systems, lithium‑ion & LiFePO4 batteries, and modular energy storage systems. Our portfolio also includes energy storage containers, energy storage cabinets, containerised power stations, off‑grid power supply systems, backup emergency power, clean energy solutions, new energy storage systems, and green power systems. We offer battery cabinets with integrated BMS, outdoor all‑in‑one storage cabinets, commercial & industrial storage, communication battery cabinets, server racks, and transformer capacity expansion services. Whether you need a small off‑grid system or a zero‑carbon factory solution, our products deliver reliability and performance.
Our modular energy storage solutions range from 20ft/40ft mobile containers to outdoor all‑in‑one energy storage cabinets. We are a leading manufacturer of battery cabinets with BMS, offering communication battery cabinets for telecom, server racks for data centers, and energy storage battery BMS systems. We utilize lithium‑ion energy storage batteries and LiFePO4 batteries for optimal safety and lifecycle. Our stackable design allows flexible capacity expansion, while our grid‑forming technology ensures stable microgrid operation. Whether for distributed PV systems, off‑grid power supply, backup emergency power, or large zero‑carbon parks, our products feature advanced thermal management, PCS and EMS integration, and compliance with South African and international standards. We also provide professional energy storage system installation and after‑sales support, and we help clients navigate energy storage subsidies where applicable.