Solar System Calculations Made Easy
Estimate your solar energy needs for home, RV, or off-grid projects. From panels and batteries to charge controllers, inverters, ROI, and cable sizing, use our comprehensive suite of solar calculators and expert advice for effective solar system planning.
Why Choose Our Solar System Sizing Tools?
Comprehensive Tools
Calculate everything from total load and inverter sizing to solar investment payback periods and optimal cable gauge for your setup.
Instant Results
Get quick and accurate solar estimations to help you plan your solar energy project efficiently and make informed decisions.
Expert Advice
Consult our Solar Advisor for personalized recommendations and answers to your specific solar questions.
Shareable Results
Easily copy and share your detailed calculation results, complete with timestamps, for your records or consultations.
Solar Journey Kickstarter
New to solar or unsure where to begin? Answer a couple of questions, and our advisor will suggest the best tools and resources on this site to get you started!
Ready for Your Solar Project?
Whether you're planning an off-grid solar system, supplementing your home energy, or setting up solar for an RV, our tools can help you make informed decisions. Dive into our calculators or learn more about the benefits and planning of solar energy.
About Solar Calculator Pros
Empowering your transition to clean, renewable energy with precision tools, expert guidance, and comprehensive resources.
Our Mission
At Solar Calculator Pros, our mission is to demystify the process of going solar. We believe that everyone should have access to the information and tools needed to make confident, informed decisions about their energy future. Whether you're a homeowner looking to reduce your electricity bills, an adventurer outfitting an RV for off-grid living, or a professional planning a complex installation, our platform is designed to be your trusted companion every step of the way.
What We Provide
Precision Calculators
Our comprehensive suite of free calculators covers every aspect of system sizing—from initial load assessment to battery banks, panel arrays, inverter sizing, and even financial ROI.
AI-Powered Guidance
Leverage our Solar Advisor and Journey Kickstarter to get personalized recommendations and clear answers to your most challenging solar questions, powered by advanced AI.
In-Depth Resources
Explore our resources section to visualize system components, understand industry jargon with our glossary, and learn optimization tips to maximize your solar investment.
Why Go Solar? The Powerful Benefits
Embracing solar energy is a significant step towards a sustainable future and energy independence. It offers a wide array of advantages for individuals, communities, and the planet.
Renewable & Sustainable
Solar power is derived from the sun, an abundant, inexhaustible, and clean resource, reducing reliance on finite fossil fuels for a greener planet.
Reduce Electricity Bills
Generating your own electricity can significantly lower or even eliminate your monthly energy costs, offering long-term savings and financial predictability.
Low Maintenance Costs
Solar panel systems are durable and generally require very little maintenance, often just periodic cleaning, leading to hassle-free operation.
Environmentally Friendly
Solar power produces no greenhouse gas emissions during operation, helping combat climate change and reduce your carbon footprint.
Increase Property Value
Homes equipped with solar panel systems often have higher property values and attract environmentally-conscious buyers in the real estate market.
Energy Independence
Reduce your dependence on traditional utility providers and protect yourself against fluctuating energy prices with your own power source.
Solar Calculators
Navigate through our specialized tools to design and optimize your solar energy system. Select a category below to view the relevant calculators.
Start here to determine the fundamental components for your solar setup. Accurate sizing is key to an efficient and reliable system.
Total Load Calculator
Estimate your total daily energy consumption (Wh) and peak power demand (Watts) for accurate system sizing.
Battery Bank Sizer
Determine the optimal battery bank capacity (Ah/kWh) for your energy storage needs and desired autonomy.
Solar Panels Needed
Calculate the number of solar panels required to meet your daily energy goals, optionally factoring in battery charging.
Charge Controller Sizer
Find the right amperage for your solar charge controller based on your panel array and battery voltage.
Inverter Sizing
Determine the appropriate continuous and surge wattage for your solar inverter to power your appliances.
Fine-tune your system for maximum efficiency, output, and longevity with these specialized calculators.
Panel Tilt & Orientation
Get guidance on optimal solar panel placement and angle to maximize energy capture throughout the year.
Rooftop Layout Planner
Visually plan your panel arrangement. Define your roof space and panel size to optimize your layout and count.
Annual Energy Production Estimator
Estimate the yearly energy output (kWh) of your solar panels based on system size and sun hours.
Battery Charge Time Estimator
Estimate how long it will take to charge your batteries with your solar panel setup and charge controller type.
Cable Gauge Calculator (AWG)
Determine the appropriate AWG wire size for safe and efficient power transfer, minimizing voltage drop.
What Can My Panels Power?
See real-world examples of appliances your solar setup could run daily, based on its estimated energy production.
Sunlight Hours & Location Analyzer
Get estimated peak sun hours for your location and insights on its solar potential.
Assess the economic viability of your solar project and leverage our advisor for personalized guidance.
Payback & ROI Estimator
Estimate solar system payback period and potential return on investment for your solar energy investment.
Basic System Cost Estimator
Get a rough ballpark equipment cost (panels, inverter, batteries) based on system size and type.
Solar Advisor
Ask our advisor for personalized advice on any solar-related questions or specific project needs.
Solar Resources & Guides
Expand your knowledge with our curated resources. From understanding solar components to decoding your electricity bill and exploring financing options, we're here to help you on your solar journey.
Visualizing Your Solar Power System
Understand the flow of energy in a typical solar power setup, from sunlight capture to powering your loads or charging batteries.
Solar Glossary
Confused by solar jargon? Use our glossary to quickly understand common solar energy terms and concepts. Click a predefined term or type your own.
Decoding Your Electricity Bill (Infographic)
Understand the key components of your electricity bill to better assess potential savings from solar. This visual guide helps you identify usage charges, fixed fees, and how solar credits might appear.
Optimizing Your Solar System's Performance (Tips)
Learn practical tips to maximize your solar system's energy output and longevity. From panel cleaning to monitoring, these small steps can make a big difference.
Regular Cleaning
Keep panels free of dirt, dust, and debris to maximize light absorption.
Minimize Shading
Trim trees or remove obstructions that cast shadows on your panels, especially during peak sun hours.
Monitor Performance
Use monitoring systems to track output and quickly identify any issues or drops in efficiency.
Check Connections
Periodically inspect wiring and connections for tightness and signs of wear or corrosion (if safe and accessible).
Get In Touch With Solar Calculator Pros
Have questions, feedback, or need assistance with your solar project planning? We're here to help! Use the form below to send us a message. We aim to respond within 1-2 business days.
Privacy Policy
Effective Date: May 20, 2024
Welcome to Solar Calculator Pros ("we," "us," or "our"). We are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website, solarcalculatorpros.com (the "Service"). Please read this policy carefully.
1. Information We Collect
We collect information in the following ways:
a) Information You Provide Directly:
- Calculator Inputs: When you use our calculators, you provide data such as appliance wattage, sun hours, system costs, latitude, or location details. This information is used solely to perform the requested calculations.
- Advisor Feature Queries: When you interact with our features like the Solar Advisor, Journey Kickstarter, Solar Glossary, or Sunlight Analyzer, we collect the questions and information you provide to process your request.
- Contact Form: When you contact us, we collect your name, email address, and the message you send.
- Saved Scenarios: Our "Save Scenario" feature allows you to save your calculation inputs and results. This information is stored exclusively on your local device using your browser's Local Storage. We do not have access to, nor do we transmit, this saved data.
b) Information Collected Automatically:
- Geolocation Data: Our "Sunlight Hours & Location Analyzer" feature may request access to your device's geolocation to provide location-specific sunlight data. We only access this information with your explicit permission, which your browser will prompt you for. You can deny this permission without affecting the rest of the Service's functionality.
- Usage Data: Like most websites, we may collect standard technical information automatically, such as your IP address, browser type, operating system, and the pages you visit. This data is used for analytics, to improve the Service, and for security monitoring.
2. How We Use Your Information
We use the information we collect to:
- Provide, operate, and maintain the Service.
- Perform the calculations and generate the results you request.
- Power our advisor-driven features and provide you with personalized advice.
- Respond to your comments, questions, and provide customer support via the contact form.
- Monitor and analyze usage and trends to improve your experience and the Service's functionality.
- Ensure the security and integrity of our Service.
3. Third-Party Services & Data Sharing
We do not sell your personal information. We only share information in the following limited circumstances:
- Google Gemini API: To provide our AI-powered features (e.g., Solar Advisor, Solar Glossary, etc.), we send your queries to Google's servers for processing via the Gemini API. This interaction is subject to Google's API privacy policies. We recommend you review the Google Privacy Policy. We do not send personal identifiers like your name or email with these AI queries.
- Legal Requirements: We may disclose your information if required to do so by law or in the good faith belief that such action is necessary to comply with a legal obligation, protect and defend our rights or property, or prevent fraud.
4. Data Storage and Security
We use reasonable administrative, technical, and physical security measures to help protect your information. As mentioned, data you choose to save via the "Save Scenario" feature is stored in your browser's Local Storage on your device and is not accessible by us.
Please be aware that despite our efforts, no security measures are perfect or impenetrable, and no method of data transmission can be guaranteed against any interception or other type of misuse.
5. Your Rights and Choices
- Saved Scenarios: You can view, load, and delete your saved scenarios at any time within the respective calculator. You can also clear all saved data by clearing your browser's site data for solarcalculatorpros.com.
- Geolocation: You can enable or disable location services when prompted by your browser or through your device's settings.
- Providing Information: You can always choose not to provide certain information, but this may prevent you from using certain features of the Service (like the advisor tools or location analyzer).
6. Children's Privacy
Our Service is not directed to individuals under the age of 13, and we do not knowingly collect personal information from children under 13.
7. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Effective Date" at the top.
8. Contact Us
If you have any questions about this Privacy Policy, please contact us using the form on our Contact Us page.