Calculate Your Potential Electricity Saving with Solar Power Calculator

sundusolar solar power calculator


Save Utility continuously


Improve Your Power Independence


Increase Your Property Value

Step 1 of 13
Your Zipcode helps us determine the available insentives and installers in your area.

Real Customer Utility Bill After Solar Installation


Save up to $55,000 through Your Solar System

20 years estimate savings



$340 Per Month



$67 Per Month

System Information

Recommended System Size

14,340 W

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Property Value Increase


Solar Payment

Electric Bill With Solar

$67 Per Month

Net Monthly Cost with Solar


Monthly Bill Savings


Average System Cost Based on System Size

According to the US Energy Information Administration (EIA), the typical American family consumes 10,715 kWh of power per year1, implying that a 7kW system would be required to offset 100% of electricity use. As seen in the chart below, a 7kW system with installation will cost you roughly $20K before any incentives are applied.

System Size

Avg. System Cost
Before Tax Credit

Avg. System Cost
After Tax Credit

2 kW
























Solar Panel Requirement Estimate Based on System Size

System Size

Number of Panels Needed

Yearly Production Estimated

4 kW


6,400 kWh



12,800 kWh



19.200 kWh



25,600 kWh



32,000 kWh

Are you able to install 20 solar panels on your roof? 2500 square feet is the size of the typical US home, which can accommodate around 33 solar panels.

Home Size

Estimated Monthly Electricity Need

Number of
Solar Panels Need

1,000sq. feet



2,000sq. feet



2,500sq. feet



3,000sq. feet



3,500sq. feet




With the rising demand for sustainable energy sources, solar power has emerged as a viable and environmentally friendly option. However, before investing in solar panels, it is essential to determine the appropriate system size and energy requirements for your specific needs. This is where a solar power calculator comes into play. In this article, we will explore the benefits of using a solar power calculator, how it works, and provide a step-by-step guide on utilizing this invaluable tool.

1. Introduction

Solar power calculators are digital tools designed to estimate the size and capacity of a solar panel system required to meet a specific energy demand. These calculators take into account various factors such as location, climate, energy consumption patterns, and available sunlight to provide accurate results. By using a solar power calculator, individuals and businesses can make informed decisions about their solar energy investments and achieve optimal energy efficiency.

2. How does a solar power calculator work?

To understand how a solar power calculator works, it is crucial to familiarize oneself with the components of a solar power system. A typical system consists of solar panels, inverters, batteries (if applicable), and a monitoring system. The calculator uses inputs such as geographical location, energy consumption, and system efficiency to estimate the number of solar panels and batteries required.

When using a solar power calculator, users input data such as their location, energy needs, and system preferences. The calculator then considers the average sunlight hours in the given area and calculates the daily energy generation potential. It also takes into account factors like system losses, shading, and panel tilt to provide a realistic estimate.

3. Factors to consider when using a solar power calculator

Several factors influence the accuracy of solar power calculations. These include:

– Location and climate:

The amount of sunlight a location receives throughout the year plays a significant role in solar panel efficiency. Areas with more sunlight generally produce more energy. Additionally, climate factors like temperature and humidity affect system performance and should be considered during calculations.

– Available sunlight:

Shading from nearby buildings, trees, or other objects can reduce the efficiency of solar panels. It is important to assess the availability of direct sunlight and account for any potential obstructions.

– Energy needs and usage patterns:

Understanding your energy consumption patterns is crucial for accurate calculations. Factors such as the number of occupants, daily electricity usage, and peak load requirements should be taken into account when using a solar power calculator.

4. Benefits of using a solar power calculator

Utilizing a solar power calculator offers numerous advantages:

– Accurate estimation of solar panel requirements:

By inputting specific data into the calculator, users can determine the optimal number of solar panels and their placement for maximum energy generation. This ensures the system meets the desired energy needs.

– Cost savings and return on investment:

A solar power calculator helps estimate the financial aspects of going solar. It takes into account the initial investment, potential savings on electricity bills, and the payback period for the system. This information allows users to make informed decisions and assess the financial viability of solar energy.

– Environmentally friendly energy solution:

Solar power significantly reduces reliance on fossil fuels, minimizing greenhouse gas emissions and environmental impact. By accurately sizing a solar power system, users can contribute to a greener future and combat climate change.

5. Step-by-step guide to using a solar power calculator

To utilize a solar power calculator effectively, follow these steps:

– Gathering necessary information:

Collect data such as your location, monthly electricity bills, and energy consumption patterns. This will enable the calculator to provide accurate estimates.

– Selecting the right calculator:

There are various solar power calculators available online. Choose a reliable and user-friendly calculator that aligns with your requirements.

– Inputting data and adjusting parameters:

Enter the collected information into the calculator, including your location, roof orientation, shading factors, and desired energy output. Adjust parameters according to your preferences, such as system size and battery storage options.

– Analyzing the results:

Once you input all the necessary data, the calculator will generate results based on your inputs and the specific location. Evaluate the estimated system size, potential energy generation, and financial implications to make an informed decision.

6. Common challenges and tips for using a solar power calculator

While solar power calculators provide valuable insights, there are certain challenges to consider:

– Dealing with complex energy needs:

If your energy consumption varies significantly or you have specific requirements, it is advisable to consult with solar energy professionals who can offer tailored solutions.

– Adjusting for future energy consumption:

Consider potential changes in your energy needs, such as expanding your property or adding new appliances. A solar power calculator can help you account for future requirements and design a system that accommodates growth.

– Consulting with professionals:

If you have limited knowledge about solar power systems, it is beneficial to consult with experts who can guide you through the process. They can provide accurate calculations and recommend the most suitable system for your needs.

7. Additional tools and resources for solar power calculation

In addition to solar power calculators, other tools and resources can assist with solar power calculations:

– Online solar calculators:

Numerous websites offer user-friendly solar power calculators that provide accurate estimates. These calculators are often free and require basic information to generate results.

– Software and mobile applications:

Some software programs and mobile apps are available that offer advanced solar power calculation features. These tools allow for more detailed analysis and customization options.

– Professional assistance and consultations:

For complex projects or if you prefer a hands-on approach, consider hiring solar energy professionals who specialize in system design and calculations. Their expertise can ensure accurate results and a customized solar power solution.

8. Case studies and success stories

Real-life examples highlight the benefits of using solar power calculators:

– Case study 1: A homeowner in a sunny region used a solar power calculator to estimate the system size and costs. By installing the recommended system, they reduced their electricity bills by 50% and achieved a return on investment within five years.

– Case study 2: A commercial business utilized a solar power calculator to assess the feasibility of solar panels on their rooftop. The calculator estimated the potential energy generation and payback period, convincing the business to invest in solar power. As a result, they achieved significant cost savings and positioned themselves as an environmentally responsible company.

9. Conclusion

Solar power calculators empower individuals and businesses to make informed decisions when considering solar energy solutions. By accurately estimating system requirements, potential energy generation, and financial implications, users can maximize the benefits of solar power while minimizing costs. Remember to consider location, climate, energy needs, and usage patterns to ensure accurate calculations. Embracing solar power not only reduces reliance on non-renewable resources but also contributes to a sustainable and greener future.

FAQs (Frequently Asked Questions)

1. Are solar power calculators accurate?

Solar power calculators provide reasonably accurate estimates based on the information provided. However, variables such as shading, system losses, and weather patterns can impact real-world results. It is advisable to consult with professionals for more precise calculations.

2. Can I use a solar power calculator for off-grid systems?

Yes, solar power calculators can be used for off-grid systems as well. These calculators take into account battery storage and energy consumption patterns to determine the appropriate system size and battery capacity.

3. Can I rely solely on a solar power calculator for my solar energy project?

While solar power calculators are valuable tools, it is recommended to consult with solar energy professionals for complex projects or if you have specific requirements. They can provide customized solutions and ensure accurate calculations.

4. How long does it take to recoup the investment in a solar power system?

The payback period for a solar power system depends on various factors, including the initial investment, energy consumption, and electricity rates. On average, most residential systems recoup the investment within 5 to 10 years.

5. Where can I access a solar power calculator?

There are numerous online platforms that offer solar power calculators. A simple internet search using keywords like “solar power calculator” will provide several reliable options. Additionally, solar energy professionals often have access to advanced calculators to assist with your project.