The solar panel wattage calculator will help you find your recommended solar panel wattage requirement depending on your electricity consumption.
Quick online calculation of solar photovoltaic power and energy (PV panels or systems). KWp to kWh calculator.
System Configuration Configure your solar installation parameters Location System Power (kW) Panel Tilt Angle 35 ° Optimal angle for maximum solar exposure
Design Online Your Solar System. Calculate your daily Solar needs and get recommendations for panels, batteries & inverter—all in one place!
Solar Panel Calculator is an online tool used in electrical engineering to estimate the total power output, solar system output voltage and current when the number of solar panel units connected in series or
NREL''s PVWatts ® Calculator Estimates the energy production of grid-connected photovoltaic (PV) energy systems throughout the world. It allows homeowners, small building
PV*SOL online is a free tool for the calculation of PV systems. Made by Valentin Software, the developers of the full featured market leading PV simulation software PV*SOL, this online tool
Calculate Total Solar Panel Area (m²): Once you know the total power, divide it by the power and area of a single solar panel to find out how many panels and how much space you need. Keep in mind that
Calculate how many solar panels you need with this solar calculator. Great for estimating the solar panels needed for a solar array project.
Solar Panel Calculator Size a PV system, estimate energy output, or find panel count from your usage, sun-hours, and performance ratio — with steps and units.
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.