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Cover: 7.2kW PV system installed by Jim Bryant in Moab, Utah.

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Find all the components you would need for residential, commercial, and industrial solar systems.

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You will need more than solar panels for your project. We have helped hundreds of customers with their selection of inverters, charge controller, cables, breakers, enclosures, racking systems, and energy storage.

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Flat shipping rates across the US and free shipping on qualifying orders.

Wholesale Pricing

Tell us about your project, we offer full system discounts and volume pricing.

Grid-Tie Solar Systems

Are you looking at getting solar panels for your home?

We carry PV panels, roof (or ground) mounting systems, cables, circuit protection, inverters, optimizers, and everything you need for a complete residential solar system.

Off-Grid Complete Systems

Do you need power where there is no access to the grid?

A solar off-grid system might be your most viable power source. Pair the solar panels with a wind turbine or a fuel generator for additional energy. We offer a full range of power storage solutions and off-grid systems.

Complete Solar Systems

In addition to the products in this store, we offer complete solar systems. We call them BOXED systems. They include everything that you will need for a professional installation. Our comprehensive residential PV systems even come with a set of drawings to aid you with the permitting process.

Happy Customers

I have finished my install. Thanks again for all the help on this project!
~ David Hale

9.15kW PV System installed by David in Kaysville, Utah

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Equipment Manufacturers

Solar (photovoltaic) Panels

Solar panels are all made of silicon cells. They are either monocrystalline or polycrystalline. We have grouped solar panels into two categories: low voltage (12V and 24V) and large format.

The solar cells in a low voltage panel are configured in a way that the output will be nominal 12 or 24 Volts DC. They are used in simple battery charging applications to keep the voltage constant across the system. These panels are available in sizes ranging from 5W to 190W. See 12V and 24V solar panels.

Large format panels are made with 60, 72, or 96 solar cells. The output voltage of these panels varies but tends to be higher than 40 Volts DC. These panels are preferred in multiple applications, from residential and commercial systems to large power plants. See our solar panel selection guide.

Solar Power Electronics: Inverters and Charge Controllers

The power from the solar panels is not stable, and for practical purposes, it can’t be used as-is. An electronic device is required to harness solar power and convert it into useful energy. Systems that are interconnected to the grid use an inverter that converts the DC power from the panels into AC power compatible with the electric grid. When the solar power is used to charge batteries, a charge controller is needed between the panels and the batteries to protect the batteries from overcharging.

Off-Grid Inverters

Off-grid systems can be fully configured in DC current, therefore not needing an inverter. The inverters used in off-grid systems convert the DC energy stored in the batteries into AC power to operate standard appliances. The output of a DC/AC inverter is equivalent to power in a home outlet (120VAC) or the power coming from the utility grid (240VAC).

Batteries and Energy Storage

The batteries used in renewable energy systems are known as deep cycle batteries. Even with new technologies, lead-acid batteries are widely used in renewable energy systems. Deep cycle batteries come in two presentations: flooded and valve-regulated (VRLA). VRLA batteries are also known as maintenance-free; the two most common types of VRLA batteries are gel and glass-mat (AGM).

Battery banks can be configured at any desired voltage. However, it is rare to see a bank with a nominal voltage other than 12V, 24V, or 48V. As a rule of thumb, portable and mobile systems are 12V. Recent RVs, boats, and custom vans are wired at 24V. 48V is the default voltage for medium and large power applications.

Wind and Other Power Sources

Solar is the most common renewable energy source; however, in specific locations, it makes sense to add other sources such as wind and hydropower. Wind power has the advantage that it is not limited to daily cycles, and it tends to be available when the sun is not. For example, wind can be harnessed at night or on stormy days, making it an ideal complement to solar for stand-alone systems in remote locations.

Balance of Systems (BOS)

As you can imagine, there are other components needed to operate a renewable energy system safely. For circuit protection, think of breakers, fuses, cables, connectors, surge protectors, boxes, and electrical enclosures. For the installation, you might require a racking system to mount the solar panels or a combiner box for the PV circuits.

Solar Energy Knowledge Base