Solar Panel System Calculator
Get a personalized estimate for your solar panel system in less than 2 minutes
Discover exactly how many solar panels you need to power your home and start saving on electricity bills
Get a personalized estimate for your solar panel system in less than 2 minutes
We use industry-standard calculations to provide accurate estimates for your solar needs
We analyze your monthly electricity consumption to determine your energy needs.
Your location's solar potential is calculated based on average sunlight hours.
We recommend the optimal system size based on your roof space and efficiency.
Thousands of homeowners have used our calculator to start their solar journey
"The calculator gave me a perfect estimate that matched my installer's quote. Saved me hours of research!"
"I was able to determine exactly how many panels would fit on my roof before even calling a company."
"The savings estimate helped convince my spouse that solar was worth the investment. We're now saving $150/month!"
Common questions about solar panel calculations
Our calculator provides estimates within 10-15% of professional assessments. We use industry-standard calculations based on your electricity usage, location, and roof characteristics. For precise numbers, we recommend consulting with a local solar installer.
Key factors include: your electricity consumption, roof size and orientation, local sunlight hours, panel efficiency, shading from trees or buildings, and your energy goals (full or partial offset).
As of 2024, the average cost ranges from $15,000 to $25,000 for a residential system after federal tax credits. Costs vary based on system size, panel type, and installation complexity. Our calculator provides a personalized estimate based on your inputs.