15 kW Solar System

If you’re thinking about switching to solar, a 15 kW system is a strong option for larger homes, small businesses, or properties with above-average energy use. On average, a system of this size can generate between 50 and 70 kilowatt-hours (kWh) of electricity per day, depending on factors like location, panel orientation, and available sunlight. This level of production can cover the energy needs of most high-usage households or light commercial operations. Read on to discover what a 15 kW system offers and see if it’s the right match for your energy goals.

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Is a 15 kW Solar System Right For Me?

A 15 kW solar system is a great fit if:

Your property consumes approximately 1,800 to 2,500 kWh of electricity per month.
You’re looking to reduce or eliminate your monthly electric bill significantly.
You have sufficient space on your roof or land to accommodate a larger solar array.
You’re interested in long-term energy savings and gaining more control over your energy use.

A 15 kW solar system is ideal for large homes, small commercial buildings, or agricultural properties with high and steady energy consumption. When your system produces more electricity than your property uses, the extra energy can typically be sent back to the utility grid through net metering. This allows you to earn energy credits that can be applied to future electricity use, effectively lowering or even offsetting your utility bills over time.

15 kW Solar System Options

At Belmont Solar, we create tailored solar solutions designed to fit your specific energy requirements. Here are the three main types of 15 kW solar systems we provide:

Grid-tie Solar Systems

Remain tied to the power grid while reducing your reliance on traditional sources of energy.

Grid-Tied Solar

Hybrid Solar Systems

Combine the benefits of grid power and off-grid freedom by including battery storage for dependable backup energy.

Hybrid Solar

Off Grid Solar Systems

A perfect solution for remote locations or if complete energy independence is your ultimate goal.

Off Grid Solar

Every system is designed to meet your specific power needs, property layout, and budget objectives.

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Solar System Components

Understanding the components of a 15 kW solar system gives you insight into how they work together to deliver consistent, renewable power.

Solar Panels

Solar panels are the foundation of any solar power system, capturing sunlight and converting it into electricity for your home, business, or farm. A 15 kW system typically produces around 1,800 to 2,500 kilowatt-hours (kWh) of energy each month, depending on local sunlight conditions and the efficiency of your panels. Reaching this capacity generally requires between 34 and 45 solar panels, depending on the wattage of the panels used. At Belmont Solar, we use top-quality, American-made panels and back every installation with our Triple 10 Warranty, covering system performance, components, and workmanship for long-lasting peace of mind.

Inverters

Inverters are a key component of your solar system, converting the direct current (DC) generated by your panels into alternating current (AC), which your home or business uses to power everyday electronics and appliances. Modern inverters also include real-time monitoring capabilities, giving you insights into how much energy your system is producing and how efficiently it’s operating. At Belmont Solar, we work with reputable inverter manufacturers like Sol-Ark, SolarEdge, and Tesla to provide dependable, long-lasting performance.

Meters

Smart meters measure the electricity produced by your grid-tied or hybrid solar system, along with the energy you use and send back to the utility grid. They’re a crucial part of net metering programs, which credit you for any surplus power your system supplies. If you want to participate in Solar Renewable Energy Credit (SREC) programs, you’ll also need a separate production meter that records your system’s total energy generation.

Batteries

Batteries are an essential part of Off-Grid and Hybrid solar systems, storing surplus energy produced during daylight hours for use when the sun isn’t shining. In Off-Grid setups, they supply continuous power throughout the day and night. In Hybrid systems, batteries act as a backup source, ensuring your home stays powered during grid failures or blackouts.

Racking System

If your solar array is roof-mounted or ground-mounted, having a strong and reliable racking system is key to keeping your panels securely in place. At Belmont Solar, we use our custom-engineered Tough Trac racking system, crafted in-house for superior durability and support. This system also includes integrated wire management, providing a clean, organized look while improving overall efficiency and aesthetics.

Our Solar Panel Installation Process

Begin your solar journey by reaching out to us via phone or by filling out a quote request on our website. To help us deliver the most accurate estimate possible, please have your property address, a recent utility bill, and an estimated budget available. With this information, we can determine the ideal system size for your needs and give you a detailed overview of potential installation costs.

We’ll provide you with a free online proposal that covers all the important aspects of your solar project. It will detail expected costs, a payback period estimate, and a general timeline for the installation. Once you’re ready to proceed, you can approve the proposal with an electronic signature and make an initial deposit to get things underway.

After the contract is finalized, we handle all permitting and documentation by working directly with local officials. Once we receive the required approvals, we’ll schedule your installation and dispatch our crew to begin the setup. When the system is installed, we conduct a full inspection to verify that everything is operating properly and generating power as expected.

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Why Belmont Solar?

For over 20 years, Belmont Solar has helped families transition to clean, dependable solar energy through customized service and expert guidance. We’ve worked with hundreds of homeowners using a personal, hands-on approach that avoids call centers and cookie-cutter solutions. Every system is carefully designed in-house to meet your specific needs, and our team is with you from the first conversation to final installation. With top-tier equipment, skilled craftsmanship, and clear communication, we make going solar simple and stress-free. Ready to get started? Download our free solar guide to learn more.

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Areas We Serve

Since 2002, we’ve been serving homeowners and businesses across Pennsylvania and Maryland with expert solar installation services. Whether you’re interested in a grid-tied, off-grid, or hybrid setup, our knowledgeable team will work with you to find the ideal solution for your energy goals. Contact us today or give us a call to begin your solar journey with confidence.

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Solar Panel FAQ

A 15 kW solar system is designed for durability and long-term efficiency, with a typical lifespan of 25 to 30 years. Most solar panel manufacturers guarantee that their panels will maintain at least 90% of their original output over a 25-year period. At Belmont Solar, we use trusted, American-made Solar4America panels, which come with a 25-year limited product warranty. To give you even more peace of mind, our installations are also backed by our exclusive Triple Ten Warranty—covering the system’s production, equipment, and workmanship for a full decade.

Solar panels perform best in full sun, but they can still produce electricity from diffused or indirect light, such as on cloudy or overcast days. Although output is reduced compared to clear conditions, your system will continue generating power even when the weather isn’t ideal.

Renewable Energy Source: Solar energy draws from the sun, an infinite and free natural resource, making it a highly dependable and environmentally friendly way to power your home or business.
Reduced Electricity Costs: Installing a solar system can lead to major savings on your electricity bills—and in some cases, eliminate them entirely—depending on your usage and system output.
Environmental Benefit: Solar energy is a clean power source that doesn’t rely on fossil fuels, meaning it produces no harmful emissions and helps lower your overall carbon footprint.
Increased Home Value: According to data from Zillow, homes in Pennsylvania with solar installations may see a property value increase of up to 4.1%, making solar a smart financial and environmental investment.

Installing a grid-tied or hybrid solar system gives you access to net metering, a program that lets you send excess electricity back to the utility grid. When your solar panels generate more power than your home or business needs, the surplus is converted into credits on your account. These credits can offset future energy usage, helping you save on your electricity bills over time.