Free Solar Panel Simulator
Solar Panel Simulator helps you model a rooftop solar system from location, roof area, panel count, panel wattage, roof direction, tilt, shading, and electricity price, then compare generation, bill savings, and simple payback.
Built for quick Solar Panel Simulator checks across custom systems plus 5kW, 8kW, and 10kW payback scenarios.
Start Solar Panel Simulator here: enter ZIP, city, coordinates, roof size, solar panel count, wattage, roof azimuth, tilt, shading, losses, incentives, net metering, battery, and local electricity rate.
Adjust site, array, and roof inputs. Solar Panel Simulator recalculates energy, savings, roof fit, and payback instantly.
Location and bill assumptions
Choose a region preset, then edit peak sun hours or local electricity price if you have better data.
Solar panel system size
Enter roof area, panel count, single-panel wattage, and installed cost per watt.
Roof direction and shade
Orientation, tilt, and shading have a large effect on Solar Panel Simulator production estimates.
System losses and degradation
Tune inverter, temperature, soiling, and annual panel degradation instead of using one generic loss number.
Incentives, net metering, and battery
Add tax credits, rebates, export credit behavior, and optional battery cost for a payback estimate closer to local policy.
Normal edits keep the clean page URL. Copy a result link only when you want to share the entered solar scenario.
Solar Panel Simulator annual generation
0 kWh
Daily generation
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Monthly generation
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Yearly bill savings
$0
Simple payback
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Estimated installed cost
$0
20-year savings after cost
$0
Monthly kWh uses a seasonal curve scaled from the simplified peak-sun-hour model.
Compare 5kW, 8kW, and 10kW systems using the same sunlight, roof, shading, price, and installed-cost assumptions.
| System size | Annual kWh | Annual savings | Simple payback |
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For an exact quote-level estimate, use NREL PVWatts with your ZIP, coordinates, equipment, azimuth, tilt, losses, and utility assumptions. Open PVWatts
Solar Panel Simulator is an educational planning tool. It uses a simplified peak-sun-hour model with monthly seasonality, roof-fit, azimuth, tilt, shading, custom system losses, degradation, incentives, net metering, and optional battery assumptions; actual solar quotes, weather, utility rules, rebates, and production can differ.
Solar Panel Simulator turns roof size, panels, wattage, sunlight, orientation, tilt, shading, and electricity price into a practical generation and savings view.
Solar Panel Simulator lets you enter roof area, panel count, and single-panel wattage so you can see whether the selected array fits and how much capacity it can produce.
Solar Panel Simulator compares 5kW, 8kW, and 10kW systems so you can test how installation size changes annual savings and simple payback.
Use this Solar Panel Simulator guide to build a first-pass rooftop solar estimate before requesting professional quotes.
Choose a region preset, then edit daily peak sun hours and your local electricity rate. Solar Panel Simulator uses these values to estimate yearly output and bill savings.
Add usable roof area, panel count, panel wattage, roof orientation, tilt, and shading. Solar Panel Simulator caps output if the chosen panel count does not fit the roof.
Review daily, monthly, and annual kWh, yearly bill savings, and simple payback. Solar Panel Simulator also compares 5kW, 8kW, and 10kW installations.
Simple payback includes entered incentives, net metering, battery cost, and degradation, but it is still a simplified planning screen. For exact quote-level production, use NREL PVWatts or a professional installer model.
Explore more simulatorsSolar Panel Simulator focuses on the rooftop solar questions homeowners usually ask before comparing installation quotes.
Pick a region preset or enter custom peak sun hours for your location.
Check whether your selected panel count fits the usable roof area.
Estimate daily, monthly, and annual kWh after azimuth, tilt, shading, inverter, temperature, soiling, and degradation assumptions.
Turn estimated annual production into approximate yearly electricity-bill savings.
Compare 5kW, 8kW, and 10kW installation payback with the same assumptions.
Copy a result link only on demand so normal Solar Panel Simulator visits keep a clean URL.
Solar Panel Simulator is useful whenever roof size, system size, electricity price, or shading changes a solar decision.
Compare an installer quote against a transparent first-pass output and payback estimate.
QuotesTry more or fewer panels to see how daily kWh, annual savings, and payback move.
SizingTest light, moderate, or heavy shading before deciding whether a roof face is worth using.
ShadeEstimate how local electricity prices affect the yearly value of the same solar array.
SavingsAfter Solar Panel Simulator, explore more planning, physics, finance, and browser tools from FreeSimulators.
Drag LED, resistor, button, potentiometer, and buzzer parts into a browser circuit and run beginner Arduino sketches.
Drop planets, stars, and black holes into an N-body physics sandbox with shareable presets.
Set angle of attack, air speed, wing area, air density, and airfoil shape to estimate lift, drag, lift-to-drag ratio, and stall risk.
Enter building height, floors, material, structure type, earthquake magnitude, and foundation condition to animate sway and compare seismic risk.
Set velocity, angle, height, gravity, and air resistance to compare projectile trajectories and live physics metrics.
Enter speed, reaction time, weather, road surface, tires, and vehicle type to compare reaction, braking, and total stopping distance.
Enter a city or coordinates, choose an eclipse event, and estimate local visibility, timing, obscuration, and safety reminders.
Set pendulum length, bob mass, initial angle, and gravity environment to compare theory, experiment, frequency, speed, and angular displacement.
These Solar Panel Simulator answers explain the estimate, the payback table, and where professional solar design still matters.
Solar Panel Simulator multiplies effective system capacity by daily peak sun hours and 365 days, then applies orientation, tilt, shading, and default system-loss factors. It is a simplified planning estimate, not a weather-grade engineering model.
Yes. Solar Panel Simulator shows estimated daily kWh, monthly kWh, and annual kWh for the selected roof, panel count, wattage, sunlight, direction, tilt, and shading.
Solar Panel Simulator multiplies annual kWh by the electricity rate you enter. Real bills can differ because of fixed charges, time-of-use pricing, export credits, net metering rules, and utility limits.
Solar Panel Simulator compares 5kW, 8kW, and 10kW systems using the same sunlight, roof, shading, electricity price, and installed cost per watt so you can see approximate simple payback.
No. Solar Panel Simulator is best for early planning. A professional installer can model exact roof geometry, local incentives, utility rules, equipment choices, permitting, financing, and site-specific shading.
Open Solar Panel Simulator, enter your roof and bill assumptions, and compare estimated daily, monthly, and yearly solar production.
Then use Solar Panel Simulator payback scenarios to see how 5kW, 8kW, and 10kW installations change the rough break-even timeline.
Solar Panel Simulator keeps normal page visits clean and only creates a result URL when you copy one.