Common Sizes for Solar Panels

Common Sizes for Solar Panels

Alternative Energy

If you are interested in going solar, you may be wondering what the standard size is for residential or commercial panels. This question could be answered in several ways – we can talk about the physical characteristics, the number of cells or the amount of power. Below are some answers to these questions about grid-tied solar panel systems.

Number of Cells

Solar panels are the most vital of all the solar components, as this is the part of the system that collects energy. A solar cell, or photovoltaic cell, is a device that converts the energy from the sun into electricity. These cells are connected in the solar panels in order to generate enough energy. Residential systems typically have 60 cell modules, while larger commercial panels have around 72.

Physical Characteristics

Most companies manufacture solar panels in standard sizes, even if the exact lengths and widths vary slightly. Most residential installations use panels that are 65 inches by 39 inches, as the smaller size is more ideal to maximize roof space. Commercial buildings can typically fit larger-sized panels that measure out to approximately 77 inches by 39 inches. Both residential and commercial panels are around 1.8 inches deep, and weigh between 40 and 50 pounds.

Amount of Power

Power generated from solar panels are rated by the amount of direct current (DC) they produce. Solar panels generate direct current electricity but almost everything you use in your house uses alternating current (AC) electricity. Therefore, solar systems require an inverter.

Microinverters are mounted directly behind each solar panel and convert the DC electricity from each solar panel into usable AC electricity. The amount of energy is measured in watts (W) and represents the solar panel’s hypothetical power production under ideal conditions. As of 2018, solar panels typically produce about 320 watts of power.

Why Does it Matter

It’s important to determine the size of your solar panel system to ensure your home is receiving the appropriate amount of energy. You can start by looking at how many kilowatt hours (kWh) of electricity you use in a year. Most installers provide you with your total consumption from the last year, but the average household consumes about 10,400 kWh per year [1]. Once you calculate how many kWh of power you need, you can determine the number of panels necessary to power your home. The average homeowner will need between 28 and 34 solar powers to generate energy that covers 100% usage.

Momentum Solar is one of the fastest-growing solar companies that is dedicated to the customer experience while providing affordable energy options to qualified homeowners. We handle the entire process of solar enrollment through customized design, engineering, permitting, installation and activation of every system to ensure a seamless transition to renewable energy.

If you want to reduce your monthly bills, reduce your annual taxes and help improve the environment then solar energy may be right for you. Visit our website at or call 1-888-MOMENTUM for more information.

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