Comprehensive solar planning: weather analysis, peak sun hours, tilt optimization, and power generation estimates
Comprehensive solar planning: weather analysis, peak sun hours, tilt optimization, and power generation estimates
Total wattage of your solar array (e.g., 10 × 400W panels = 4000W).
System efficiency accounting for inverter losses (~3-4%), wiring losses (~1-2%), mismatch losses (~1-2%), and soiling/dirt accumulation (~3-5%).
No loads defined. Click "Add Load" to get started.
| Name | Power (W) | Uniform Usage | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | ||||||||||||||||
Switch to the Configure tab and search for a location to view solar data and results.
Fetching solar data...
Hang tight, this takes about 30 seconds
Monthly temperature and humidity patterns help you estimate heating, cooling, and dehumidification loads. Hot weather reduces panel efficiency.
| Month | High (°F) | Low (°F) | Mean (°F) | Humidity (%) | Wind Gusts (mph) | Wind Speed (mph) | Max Wind Gust (mph) |
|---|
Wind speed data informs mounting hardware selection and shows cooling benefits. Higher gusts require stronger mounting systems.
kWh/m²/day on panel surface at different tilt angles
Peak Sun Hours (PSH) shows daily solar energy available. Higher PSH means fewer panels needed. Compare three tilt methods to choose your installation approach.
Panel tilt angle affects energy capture. Monthly adjustment maximizes output; fixed angle simplifies installation.
| Month | Monthly Optimal | Yearly Fixed | Flat (0°) | ||
|---|---|---|---|---|---|
| Tilt (°) | PSH | Tilt (°) | PSH | PSH | |
Estimate your solar panel output based on PSH data
Estimated monthly solar output for each tilt method. Compare annual totals to your loads to properly size your system.
| Month | Monthly Optimal | Yearly Fixed | Flat (0°) | |||
|---|---|---|---|---|---|---|
| Daily (kWh) | Monthly (kWh) | Daily (kWh) | Monthly (kWh) | Daily (kWh) | Monthly (kWh) | |
| Annual Total | - | - | - | |||
Enter your panel wattage above to see estimated power generation
Compare your solar generation against total electrical loads
Monthly solar generation vs. consumption. Green shows surplus energy; red shows shortfall requiring batteries or grid power.
| Month | Solar Generation | Consumption | Surplus | |||
|---|---|---|---|---|---|---|
| (kWh/month) | (kWh/day) | (kWh/month) | (kWh/day) | (kWh/month) | (kWh/day) | |
| Annual Total | - | - | - | |||
Enter panel wattage and add loads to see comparison
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Largest single-day shortfall between consumption and solar generation.
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0.00 kWh/year
0.00 kWh/day
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