Harnessing the Strength of 15kW Solar Systems

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High levels of energy consumption require a powerful solar system to match.

With an average daily output of around 60-75 kWh, a 15kW system is ideal for larger homes or small businesses that want durability and energy production without worrying whether there’s enough power to last.

A 15kW system typically consists of around 45-55 solar panels, depending on their wattage. Helping control and limit high energy bills, these systems can generate significant electricity, reducing your reliance on the grid and potentially allowing you to earn credits through the feed-in tariff scheme.

By investing in renewable energy, you can enjoy long-term savings, decrease your carbon footprint, and contribute to a greener future.

Upgrade to sustainable energy with our comprehensive solar panel packages, tailored for efficiency and cost savings.

Solar Systems

What are the best types of 15kW solar systems?

Monocrystalline Panels: These panels are known for their high efficiency and sleek appearance. They are made from a single crystal structure, allowing them to convert sunlight into electricity more efficiently than other panel types.

Polycrystalline Panels: Polycrystalline panels are slightly less efficient than monocrystalline panels but offer a more affordable option. They are made from multiple crystal structures and have a distinctive blue colour.

Hybrid Panels: Hybrid panels combine photovoltaic (PV) cells with thermal collectors, allowing them to generate both electricity and heat. This makes them a suitable choice for those looking to maximize energy production and utilize the power for heating purposes.

Micro-Inverter Systems: Instead of a single inverter for the entire solar array, micro-inverter systems have individual inverters for each panel. This improves system performance, especially in scenarios where some panels may be shaded or experiencing different levels of sunlight.

Battery Storage Systems: Adding battery storage allows you to store excess electricity generated during the day for use during the evening or when the sun isn’t shining. This enhances self-consumption and provides backup power during grid outages.

Ultimately, the best type for you will depend on your specific requirements, budget, and preferences. Consult with a member of the Energy Buster team for help determining the most suitable option for your needs.

How much does a 15kW solar system cost?

The cost can vary depending on several factors, including the brand, quality of components, installation complexity, and any additional features or upgrades. On average, you can expect the cost to range from around $20,000 to $30,000, including installation.

It’s important to note that this is a rough estimate, and prices may vary. Additionally, government incentives and rebates, such as federal tax credits or state-specific schemes, can help offset the upfront cost of the system, reducing the overall investment.

15kW solar system benefits

Reduced Electricity Bills: You can generate a significant amount of electricity, which can greatly reduce or even eliminate your reliance on the grid. This translates into substantial savings on your electricity bills over the system’s lifespan.

Return on Investment: Investing in renewable energy allows you to take advantage of long-term financial benefits. The savings on your electricity bills, combined with any feed-in-tariff credits you may earn for excess energy exported to the grid, can provide a solid return on your investment.

Environmental Impact: Renewable energy is a clean and renewable energy source that produces no greenhouse gas emissions during operation. You can significantly reduce your carbon footprint, contribute to a cleaner environment, and help combat climate change.

Energy Independence: Generating your own electricity grants you greater energy independence. You become less reliant on traditional energy sources and more self-sufficient, ensuring a consistent power supply and reducing vulnerability to utility price fluctuations.

Government Incentives: In Australia, various government incentives and rebates are available to support the adoption of renewable energy. These incentives can help offset the upfront cost, making it a more financially viable option.

Increased Property Value: The panels are considered an attractive feature for potential homebuyers. It can increase the value of your property, making it a wise investment for both financial and resale purposes.


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What is the installation process for a 15kW solar system?

The installation process for a 15kW solar system typically involves the following steps:

Step One: Initial Consultation

Contact a reputable company in Adelaide to schedule an initial consultation. During this stage, they will assess your property’s suitability for the installation, discuss your energy needs and goals, and provide a preliminary system design.

Step Two: Site Assessment

A site visit will be conducted to evaluate the available roof space, shading issues, roof condition, and electrical infrastructure. This assessment helps determine the optimal placement of the panels and any additional equipment such as inverters and meters.

Step Three: System Design and Quotation

Based on the site assessment, the company will create a detailed system design, including the number of the panels, positioning, and electrical components required. They will provide you with a quotation outlining the cost and specifications.

Step Four: Permitting and Approvals

The company will handle the necessary paperwork and obtain any permits or approvals required for the installation. This may include submitting applications to your local council or utility company.

Step Five: Installation Day

On the scheduled installation day, the installers will arrive with the necessary equipment and materials. They will mount the panels on your roof, install the inverters, connect the wiring, and set up the monitoring system.

Step Six: Electrical Connection

Once the panels are installed, a licensed electrician will connect the system to your electrical panel, ensuring it is safely integrated with your home’s electrical system. They will also install a bi-directional meter to measure the electricity exported to the grid.

Step Seven: Testing and Commission

The installed system will undergo thorough testing to ensure proper functionality and safety. This includes checking the electrical connections, verifying panel performance, and testing the inverters.

Step Eight: Grid Connection and Utility Approval

After the system passes all inspections and tests, your installer will coordinate with your utility company to finalise the grid connection and obtain the necessary approvals for energy export.

Step Nine: System Handover and Customer Education

Once everything is completed, the company will provide you with a comprehensive handover, explaining how to monitor and maintain your system. They will also assist with registering for any available feed-in tariff schemes.

Frequently Asked Questions About 15kW Solar Systems in Adelaide

The number of the panels required for a 15kW solar system depends on various factors, including the wattage of the panels and their efficiency. Generally, they have a range of wattages, typically ranging from 250 watts to 400 watts per panel.

To estimate the number of the panels needed, you can divide the total system capacity (15,000 watts) by the wattage of each panel. For example, if you have 300-watt panels, you would need approximately 50 panels (15,000 watts ÷ 300 watts = 50 panels).

However, it’s important to note that panel wattages can vary, and higher-wattage panels are becoming more common. Therefore, the exact number of panels required may vary depending on the specific wattage of the panels you choose.

It has an expected lifespan of approximately 25 to 30 years. This estimate is based on the typical warranty periods provided by solar panel manufacturers, which often range from 20 to 25 years.

However, it’s important to note that the actual lifespan of a solar system can vary depending on various factors, including the quality of the components, maintenance practices, and environmental conditions. Here are a few factors that can affect the longevity:

  1. Solar Panel Degradation: Over time, solar panels experience a gradual decrease in their power output, known as degradation. Most reputable solar panel manufacturers offer a warranty that guarantees a minimum power output of around 80% to 85% after 25 years.
  2. Inverter Lifespan: Inverters, which convert the DC electricity produced by the solar panels into usable AC electricity, typically have a shorter lifespan compared to solar panels. On average, inverters may need to be replaced once during the lifespan, typically around 10 to 15 years.
  3. Maintenance and Cleaning: Regular maintenance, such as cleaning the panels and ensuring proper electrical connections, can help optimize the performance and longevity of a solar system. It’s recommended to follow the manufacturer’s guidelines and have periodic inspections performed by a qualified professional.
  4. Environmental Factors: The environmental conditions in which the solar system operates can impact its lifespan. Extreme temperatures, severe weather events, and exposure to elements like saltwater or excessive dust can affect the durability of the system.
It has the potential to generate a significant amount of power. However, the actual amount of power it produces can vary based on several factors, including geographical location, sunlight availability, orientation and tilt of the solar panels, shading, and system efficiency.

On average, it can produce around 60 to 75 kilowatt-hours (kWh) of electricity per day. This estimate is based on ideal conditions with full sunlight and minimal shading. However, it’s important to note that solar energy production fluctuates throughout the day and is influenced by seasonal variations.

Over the course of a year, it can generate approximately 21,900 to 27,375 kWh of electricity. These figures are approximate and can vary depending on the specific factors mentioned earlier.