Key takeaways


hile smaller solar systems can satisfy the energy requirements of most households, larger systems like 10kW solar systems are gaining popularity among homes or businesses with high daytime electricity usage. These bigger systems can generate a significant amount of power, decreasing reliance on the grid and leading to long-term cost savings. In this write-up, we will take a deep dive into the world of 10kW solar systems, discover their advantages, and explain why incorporating battery storage can prove to be a smart investment. Whether you're a homeowner or a business owner seeking to transition to solar energy, this article will provide you with all the necessary details to make an informed choice.

Definition of a 10kW solar system

A solar photovoltaic (PV) system that has the ability to generate 10 kilowatts of power under standard testing conditions is commonly known as a 10kW solar system. This type of system includes solar panels, an inverter of 10kw, mounting racks, and other necessary components for installation. The number of solar panels needed to generate 10kW of power may vary depending on their wattage and efficiency, with most residential solar panels having an output rating of 330W to 400W, meaning that a 10kW system will require 25 to 30 solar panels.

A 10kW solar system is a real powerhouse and an excellent choice for commercial or large residential properties. Its capacity to generate around 35-40 kilowatt-hours of electricity per day, depending on location, weather, and shading, translates to a whopping 12,000 to 15,000 kWh of electricity per year, which surpasses the US household average needs of 10,632 kWh. This amount of electricity is enough to run a big house that has high energy demands for heating, cooling, lighting, and appliances.

Benefits of combining a 10kW solar system and backup energy storage

If you're looking to make the most of your 10kW solar system, adding backup storage can be a smart choice. By storing any extra energy generated by your solar panels during the day, you'll have access to it when the sun goes down or when sunlight is scarce. This can reduce your reliance on the power grid, cut down on electricity bills, and even allow you to earn credits for the excess energy you return to the grid. By utilizing the right battery size and type, you could potentially power your entire home using solar energy.

But the benefits of solar energy storage don't stop there. By relying less on the grid, you can boost your energy independence and reduce your vulnerability to power outages and energy price swings - especially if you live in remote areas or regions prone to extreme weather events. And by tapping into stored solar energy during peak demand times, you can also help ease the strain on the grid and possibly prevent blackouts or brownouts.

120W solar panels are compact and efficient, suitable for small-scale applications like RVs, boats, and off-grid cabins. They provide reliable power generation in limited spaces.

Components of a 10kW solar system

Now, let's take a look at the key components of a 10kW solar system with storage.

Solar panels

Solar panels are the epicenter of a solar energy system, as they are responsible for capturing and converting the sun's energy into usable electricity. These panels are usually made up of photovoltaic cells constructed from silicon or other materials. It's essential to pick the ideal solar panel size and power rating to meet your energy demands.


The inverter is another critical component of a solar system. It converts the DC (direct current) electricity generated by the solar panels into AC (alternating current) electricity that can be used to power appliances and devices in your home or business. A 10kW solar system requires a large inverter capable of handling the output of your system.

Solar battery bank

A battery bank is an optional but recommended component of a solar system, especially if you want to store excess energy generated during the day for use at night or during power outages. A 10kW solar system with backup storage typically includes several deep-cycle batteries that store the excess energy generated by the solar panels.

Charge controller

The charge controller is a device that regulates the flow of electricity between the solar panels and the battery bank. It prevents overcharging and undercharging of the batteries, which can reduce their lifespan.

Solar monitoring system

Solar monitoring tools let you keep track of your system's performance, providing real-time updates on solar energy production, consumption, and storage. This will help you fine-tune your system for maximum efficiency while spotting potential problems early on.

Costs of a 10kw solar system and ROI

Initial costs of a 10kw solar system

So, how much will getting a 10kw system cost you? EnergySage estimates that solar prices in 2023 are around $2.95 per watt, not including solar incentives. So, for a 10kw solar system without batteries, the average cost would be about $30,000. But if you want to add backup energy storage, the price will go up. Typically, a 10kW system requires a battery bank that can hold 20-30kWh, costing around $13,000 to $15,000. That means you'll be looking at a total cost of $43,000 to $45,000 for the entire solar plus storage system.

Solar incentives making a 10kW solar system more affordable

Although the upfront investment may seem steep, there are plenty of solar incentives available that can significantly lower the cost of your PV system. They can take many forms, such as federal tax credits, state and local rebates, and incentives from utility companies. These benefits make solar energy a more affordable option, opening the doors for homeowners and organizations alike. As an example, the federal solar tax credit covers 30% of the total cost of a solar panel system, which means that for a $45,000 system, this incentive can bring the price down to $31,500, and there could be additional savings from other stimuli.

Long-term savings

The return on investment (ROI) for a 10kW solar system can vary based on different factors, such as the system cost, energy output, and local electricity rates. Typically, the ROI is calculated by dividing the total electricity bill savings over the lifespan of the system by the initial installation cost. It's estimated that a 10 kW solar system can save the average U.S. homeowner about $1,970 on their annual electricity bill.

The average payback period for a solar system, i.e., the time it takes to recoup your solar energy investment, can range from 8 to 20 years, depending on your location.

Considering a 10kw solar system with battery backup: closing thoughts

To sum up, whether a 10kw solar system and backup storage is the right fit for you hinges on various factors. These include the size of your home, your energy usage habits, your budget, and the climate in your area. For a larger home that consumes a lot of energy and has limited grid access, a 10kw solar system might be a good option. However, it might not be the most suitable option for a smaller home that has lower energy needs.

The best approach is to consult a trustworthy solar contractor to determine the ideal system size based on your unique needs and goals. By carefully assessing your energy requirements and budget, you can make an informed decision that will provide you with a dependable and cost-effective solar energy system for years to come.


Key takeaways

Apr 25, 2023

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