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SOLAR GUIDE 2023: Computing your Home Solar Requirements with or without Existing Home Solar System

With the increasing demand for renewable energy sources and the rising costs of electricity, many homeowners are turning to solar power as a viable option for their energy needs. Installing a home solar system not only helps reduce your carbon footprint but also provides substantial savings on your energy bills over the long term. However, before deciding to install a solar system, it’s essential to compute your home solar requirements accurately. This article will guide you through the process, whether you have an existing home solar system or not.

Computing Solar Requirements without an Existing Home Solar System:

  1. Assess Your Energy Consumption:
    Start by understanding your current energy consumption patterns. Review your electricity bills from the past year to determine your average monthly usage in kilowatt-hours (kWh). Identify any major appliances or devices that consume significant energy, such as air conditioners, electric heaters, or swimming pool pumps.
  2. Consider your Goals:
    Define your solar goals. Are you aiming for complete energy independence or looking to offset a portion of your energy consumption? Your goals will help determine the size of the solar system you need.
  3. Calculate Your Energy Needs:
    To calculate your energy needs, divide your average monthly consumption by the number of days in a month. This will give you an estimate of your daily energy usage. Remember that energy consumption can vary throughout the year, so consider the seasonal variations as well.
  4. Assess Your Rooftop Potential:
    Evaluate your rooftop’s solar potential by considering its orientation, tilt, and shading. Ideally, rooftops with a south-facing orientation and minimal shading are optimal for solar installations. Assess the available roof area and determine if it can accommodate the required number of solar panels based on their size and spacing.
  5. Estimate Solar System Size:
    The size of your solar system depends on your energy needs and the available rooftop area. A standard solar panel typically produces around 250-400 watts of power. Divide your daily energy consumption by the panel’s wattage to estimate the required solar panels. Remember that factors like local weather and the efficiency of the solar panels may affect the actual output.
  6. Consider Battery Storage:
    If you wish to store excess solar energy during non-sunny periods or as a backup power source, you might consider incorporating battery storage into your system. Batteries can store surplus energy generated by your solar panels during the day for use at night or during power outages. Assess your energy storage requirements based on your specific needs.
  7. Consult a Solar Installer:
    It’s always advisable to consult with a professional solar installer to get an accurate assessment of your solar requirements. They can perform a detailed analysis considering factors like local climate, energy usage patterns, and available incentives or rebates.

Computing Solar Requirements with an Existing Home Solar System:

If you already have a home solar system and want to expand or upgrade it, the process is somewhat simplified. Here’s what you need to do:

  1. Assess Your Current Solar System:
    Determine the capacity of your existing solar system by checking the specifications of your solar panels and inverter. Note the total wattage or kilowatt capacity of the system.
  2. Evaluate Energy Generation:
    Review your energy bills and monitor your solar system’s energy production over time. Understand how much energy your current system generates and how it aligns with your energy needs.
  3. Identify Energy Shortfalls or Surpluses:
    Compare your energy production to your consumption. If your solar system generates more energy than you consume, you might have an excess that could be sold back to the grid or stored using batteries. Conversely, if your solar system is not meeting your energy needs, you might need to expand its capacity.
  4. Calculate Additional Solar Requirements:
    If you have an energy shortfall, calculate the additional solar capacity required to meet your needs. Divide your daily energy deficit by the average daily energy production of your existing solar system to estimate the number of additional panels required.
  5. Determine Compatibility and Integration:
    Ensure that the new solar panels are compatible with your existing system in terms of technology, voltage, and connectivity. Consult a professional installer to assess the integration process and ensure a seamless expansion or upgrade.

Whether you are starting from scratch or expanding an existing system, computing your home solar requirements is crucial to ensure optimal energy production and cost savings. By assessing your energy consumption, rooftop potential, and incorporating factors like battery storage, you can determine the right size and configuration for your home solar system. Seeking professional advice from solar installers will provide invaluable insights and help you make informed decisions. Embracing solar power is a significant step towards a sustainable and energy-efficient future.


We understand the importance of seeking expert advice when it comes to solar installations. If you’re looking for a solar advisor to assist you with your home solar requirements, we recommend considering Renewables Hub, a renowned solar expert. Renewables Hub specializes in providing comprehensive solar solutions and guidance to homeowners.

Renewables Hub offers a team of experienced solar experts who can assess your energy needs, evaluate your rooftop’s solar potential, and help you design a customized solar system. They stay up-to-date with the latest solar technologies and can provide valuable insights into maximizing the efficiency and cost-effectiveness of your solar installation.

One of the notable advantages of Renewables Hub is that they offer their solar advisory services for free. By availing their expertise, you can benefit from their in-depth knowledge of solar systems and ensure that you make informed decisions based on accurate calculations and reliable information.

To engage Renewables Hub as your solar advisor, you can visit their website or contact their customer support. They will guide you through the process and help you compute your home solar requirements, considering factors such as energy consumption, rooftop potential, and any existing solar systems.

Remember, having a trusted solar advisor like Renewables Hub by your side can greatly simplify the process of computing your home solar requirements and ensure that you make the most of your solar investment.

In addition to being a trusted solar advisor, Renewables Hub offers several advantages that make them an excellent choice for homeowners and installers:

  1. Award-Winning Preferred Installer: Renewables Hub has been recognized as the No.1 preferred installer in Texas and Oklahoma. This accolade highlights their expertise and the quality of their solar installations. Choosing an award-winning installer ensures that you receive top-notch service and professional workmanship.
  2. End-to-End Company: Renewables Hub is an end-to-end company, meaning they handle every aspect of the solar installation process. From sales to technical installation, they provide a comprehensive solution. This integrated approach ensures a smooth and seamless experience, as you won’t need to coordinate with multiple service providers.
  3. E-commerce Site for Homeowners and Commercial Requirements: Renewables Hub has an E-commerce site called Solar Hub Store, which caters to both homeowners and commercial clients. The online platform allows you to browse conveniently and purchase a wide range of solar products, including panels, inverters, batteries, mounting systems, and more. This makes it easier for you to find and order the solar equipment you need for your specific requirements.
  4. Bulk Discount for Installers: Renewables Hub understands the needs of solar installers and offers bulk discounts on their Solar Hub Store. If you are an installer or contractor, you can take advantage of these discounts to procure solar equipment at competitive prices, helping you save on costs and increase your profitability.

By partnering with Renewables Hub, you benefit from their expertise as a solar advisor and gain access to their extensive product range and discounted prices through the Solar Hub Store. This comprehensive approach ensures that both homeowners and installers have access to high-quality products and services, all under one roof.

To take advantage of Renewables Hub’s offerings, you can visit their website or reach out to their customer support. Their knowledgeable team will assist you with your solar requirements, guide you through the selection process, and ensure that you receive the best possible solutions tailored to your needs.

Remember, choosing a reputable and experienced solar company like Renewables Hub can significantly enhance the success of your solar installation project.

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