A 19KW solar system is a powerful and efficient solution for generating clean, renewable energy for residential or commercial properties. This comprehensive guide will cover everything you need to know about 19KW solar systems, including their components, performance, costs, and suitability for various applications.

What is a 19KW Solar System?

A 19KW solar system is a large-scale photovoltaic (PV) installation capable of generating approximately 19 kilowatts of electricity under optimal conditions. These systems typically consist of high-quality solar panels, inverters, charge controllers, and other essential components designed to maximize energy production and efficiency.

Core Components of a 19KW Solar System

  1. Solar Panels: A 19KW system typically requires 50-60 high-efficiency solar panels, such as the economical high-efficiency aluminum 300W monocrystalline solar energy panel. These panels convert sunlight into direct current (DC) electricity.
  2. InvertersSolar inverters convert the DC electricity generated by the solar panels into alternating current (AC) electricity, which is compatible with household appliances and the utility grid. A 19KW system may require one or more high-capacity inverters, depending on the system configuration.
  3. Charge ControllersMPPT solar charge controllers optimize the charging process between the solar panels and the battery bank, ensuring maximum energy harvest and battery longevity. A 19KW system typically requires a high-capacity charge controller, such as a 96V 80A model.
  4. Battery Bank: For off-grid or hybrid systems, a battery bank stores excess energy generated by the solar panels for use during low-light conditions or at night. The size of the battery bank depends on the system’s energy storage requirements and the property’s energy consumption patterns.
  5. Mounting Hardware: Solar panels are securely attached to the roof or ground using durable mounting hardware, such as aluminum rails, clamps, and brackets. The mounting system ensures the panels are positioned at the optimal angle for maximum energy production.

Performance and Output

A well-designed 19KW solar system can generate approximately 28,500 to 34,200 kilowatt-hours (kWh) of electricity annually, depending on factors such as geographic location, panel orientation, and system efficiency. This output is sufficient to power most medium to large-sized homes or small commercial properties, significantly reducing or eliminating reliance on the utility grid.

Cost and Return on Investment

The cost of a 19KW solar system can vary depending on factors such as location, component quality, and installation complexity. On average, a 19KW system can cost between $30,000 to $50,000 before incentives or tax credits. However, the long-term savings on electricity bills and the potential for net metering or feed-in tariffs can provide a substantial return on investment over the system’s lifespan, which is typically 25-30 years.

Suitability for Residential and Commercial Properties

A 19KW solar system is suitable for medium to large-sized homes with high energy consumption or small commercial properties with moderate energy needs. However, the actual suitability depends on factors such as available roof or ground space, local climate, and energy usage patterns.

To determine if a 19KW system is the right fit for your property, consider the following:

  1. Energy Consumption: Review your monthly electricity bills to estimate your annual energy consumption. A 19KW system is ideal for properties that consume between 25,000 to 35,000 kWh per year.
  2. Available Space: Assess the available roof or ground space for installing solar panels. A 19KW system typically requires 600-800 square feet of unobstructed space with minimal shading.
  3. Local Climate: Consider your location’s solar irradiance, which is the amount of sunlight available for energy production. Areas with higher solar irradiance can generate more electricity from a 19KW system.
  4. Energy Storage: Determine if you want an off-grid, grid-tied, or hybrid system. Off-grid and hybrid systems require a battery bank for energy storage, while grid-tied systems can feed excess energy back into the utility grid.

Choosing the Right Components

When designing a 19KW solar system, it is crucial to select high-quality, reliable components that are compatible with each other. Consider the following factors when choosing components:

  1. Solar Panels: Opt for high-efficiency, durable panels from reputable manufacturers. Monocrystalline panels, such as the REC320P solar panel, offer excellent performance and longevity.
  2. Inverters: Choose inverters with high conversion efficiency, such as the 10kW solar inverter, and ensure they are compatible with your solar panels and battery bank.
  3. Charge Controllers: Select an MPPT solar charge controller with the appropriate voltage and current ratings for your system, such as a 96V 80A model.
  4. Batteries: If using a battery bank, choose deep-cycle batteries designed for solar applications, such as lithium-ion or lead-acid batteries. Ensure the battery capacity matches your energy storage requirements.
  5. Mounting Hardware: Use durable, corrosion-resistant mounting hardware that is compatible with your roof type or ground-mount setup. Consider factors such as wind and snow loads when selecting mounting components.

Installation and Maintenance

Installing a 19KW solar system is a complex process that requires professional expertise. Hire a licensed and experienced solar installer to ensure your system is designed, installed, and commissioned according to local building codes and safety standards.

Regular maintenance is essential to ensure optimal system performance and longevity. This includes:

  1. Cleaning solar panels to remove dust, debris, or snow accumulation.
  2. Inspecting electrical connections and wiring for signs of damage or corrosion.
  3. Monitoring system performance using a web-based or mobile app to detect any issues or anomalies.
  4. Scheduling professional maintenance checks every 1-2 years to identify and address any potential problems.

Financing and Incentives

Financing options for 19KW solar systems include cash purchases, loans, leases, and power purchase agreements (PPAs). Each option has its advantages and disadvantages, and the best choice depends on your financial situation and long-term goals.

Additionally, many governments offer incentives, such as tax credits, rebates, or grants, to encourage the adoption of solar energy. Research the available incentives in your area to maximize your financial benefits.

Real-World Examples and Case Studies

To better understand the benefits and performance of 19KW solar systems, consider the following real-world examples and case studies:

  1. Residential Installation: A homeowner in California installed a 19.2kW residential REC N-Peak ground-mounted solar system using ProSolar GroundTrac mounting hardware. The system generates approximately 32,000 kWh annually, offsetting nearly 100% of the household’s energy consumption and saving over $6,000 per year on electricity bills.
  2. Commercial Installation: A small business in Arizona installed a 19KW solar system using a combination of roof-mounted and ground-mounted panels. The system generates approximately 30,000 kWh annually, reducing the business’s energy costs by 60% and providing a payback period of less than 8 years.
  3. Off-Grid Installation: A remote cabin in Colorado uses a 19KW off-grid solar system with a large battery bank for energy storage. The system provides reliable, clean energy for all the cabin’s electrical needs, including lighting, appliances, and heating, without relying on the utility grid.

These examples demonstrate the versatility and effectiveness of 19KW solar systems in various applications and environments.


A 19KW solar system is a powerful and efficient solution for generating clean, renewable energy for residential or commercial properties. By understanding the components, performance, costs, and suitability of these systems, you can make an informed decision about whether a 19KW system is the right choice for your energy needs.

When designing and installing a 19KW system, work with experienced professionals and choose high-quality, reliable components from reputable manufacturers. With proper maintenance and care, your 19KW solar system can provide decades of clean, sustainable energy, reducing your carbon footprint and saving you money on electricity bills.

As solar technology continues to advance and become more affordable, 19KW solar systems are an increasingly attractive option for those looking to embrace renewable energy and achieve greater energy independence. By investing in a 19KW system, you can take a significant step towards a cleaner, greener future while enjoying the many benefits of solar power.