PV solar panels convert solar power into DC electrical energy, providing an efficient and eco-friendly energy source. Solar panels come in various sizes, ranging from 1 watt to over 700 watts. Panels up to 135 watts are generally 12 volts, while those over 135 watts range from 21 to 40 volts (often referred to as nominal 24v panels).

For off-grid setups, high-voltage panels can be paired with MPPT controllers, which optimize performance by stepping down and converting the solar panel voltage to match the battery bank, perfect for efficient solar energy production. Solar panel output is measured in watts, a product of amps and volts, and rated under standard conditions (STC) at 25°C (77°F).

For detailed insights, refer to our comprehensive article on solar panel specifications and performance.

Durable Solar Energy Systems with Warranty

All our high-quality solar panels come with a dependable 20- or 25-year warranty, ensuring long-term reliability. Even beyond warranties, the lifespan of most solar panels exceeds 50 years, making them a sound investment that delivers decades of clean energy.

Cell Types

Our panels feature four main silicon-based cell types. Monocrystalline silicon is the most efficient and compact, offering high wattage in a smaller footprint. Polycrystalline silicon follows closely in performance and provides a cost-effective alternative. Amorphous (thin-film) silicon uses less material but requires more space due to its lower efficiency.

Cell Numbers

The configuration of solar panels has evolved with the industry. The 6-inch, 60-cell panels have become the standard for grid-tied setups, providing compatibility with both new installations and older solar systems. Whether you're managing existing solar infrastructure or installing from scratch, our panels cater to your needs.

If you have older solar panel systems and want to match up to the newer 60-cell solar panels, you can find information on how to match and use different cell panels in your solar array.

Size and Watts

Solar panels are priced in cents per watt, and their size and output depend on the type of cells used. Monocrystalline panels are the most efficient and produce more power per square foot than polycrystalline options. Thin-film panels, while historically lower in price, require nearly double the space of conventional crystalline panels due to their reduced efficiency.

With falling silicon costs, monocrystalline and polycrystalline modules remain the most popular and economical choice for modern solar energy systems.

Take the First Step Toward Clean Renewable Energy

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Frequently Asked Questions

What are PV solar panels, and how do they work?

Photovoltaic (PV) solar panels convert sunlight into direct current (DC) electrical energy. They achieve this by utilizing semiconductor materials that generate electricity when exposed to sunlight. The generated DC electricity can be used directly or converted to alternating current (AC) for grid-tied applications, while excess solar energy can be stored in batteries.

What sizes and voltage ratings are available for solar panels?

Solar panels range from 1 watts to over 700 watts. Panels up to 135 watts are typically 12-volt, suitable for small-scale applications. Panels over 135 watts usually have voltage ratings between 21 and 40 volts. High-voltage panels can also be used in off-grid systems with appropriate charge controllers.

Can high-voltage solar panels be used in off-grid battery charging systems?

Yes, high-voltage panels can be utilized in off-grid systems when paired with Maximum Power Point Tracking (MPPT) charge controllers. These controllers adjust the higher voltage from the panels to match the battery bank voltage, ensuring efficient charging.

How is the power output of a solar panel determined?

All solar panels are rated in watts, representing the power output (calculated as volts multiplied by amps) under standard test conditions (STC), which is full sunlight at 25 degrees Celsius (77°F). This standardized rating allows for consistent comparison across different panels.