Use the calculator above to translate your energy needs into a right-sized solar array. This guide explains the equations, what each input means, and how to avoid the most common
Calculate solar panel system requirements, energy production, and financial returns for residential and commercial installations. This calculator helps homeowners and businesses evaluate
This free DIY solar calculator makes it simple to estimate the size of your solar array, the number of panels, battery storage, and the inverter capacity you''ll need.
Calculate solar panel size, battery, inverter needs for homes. Free rooftop & off-grid calculator, how many solar panels you needs.
Use our solar panel calculator to find your solar power needs and what panel size would meet them.
Calculate how much power you need with these solar calculators to estimate the size and the cost of the solar panel array needed for your home energy usage.
Estimates the energy production and cost of energy of grid-connected photovoltaic (PV) energy systems throughout the world. It allows homeowners, small building owners, installers and manufacturers to
Easily calculate how many solar panels you need for your home or project. Simple, fast, and free solar power calculator with instant results.
Calculate how many solar panels you need based on your electricity consumption and location.
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.