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Solar Planner

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Solar Planner

Comprehensive solar planning: weather analysis, peak sun hours, tilt optimization, and power generation estimates

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Location Specifications

Historical Weather Averages

Temperature & Humidity

Historical weather averages are essential for effective solar planning, as they inform optimal insulation requirements and HVAC consumption patterns. Colder periods may necessitate additional heating, while warmer months increase cooling demands—directly impacting overall energy costs and solar system sizing.

Month High (°F) Low (°F) Mean (°F) Humidity (%) Wind Gusts (mph) Wind Speed (mph) Max Wind Gust (mph)

Wind Speed

Wind data provides insights into local wind patterns, which can impact solar panel performance and system design considerations. Average gusts represent typical peak wind speeds, while maximum monthly wind gusts show extreme conditions. Average sustained wind indicates typical wind conditions throughout the month.

Peak Sun Hours (PSH) & Panel Tilt Angle

kWh/m²/day on panel surface at different tilt angles

Peak Sun Hours (PSH) represents the average daily solar energy received per square meter of panel surface. Higher values indicate more solar energy available. Monthly Optimal Tilt adjusts the panel angle each month for maximum energy capture, while Yearly Fixed Tilt uses a constant angle set to the location's latitude.

Tilt angles show the optimal panel orientation for each month. Monthly Optimal Tilt changes throughout the year to track the sun's position, while Yearly Fixed Tilt remains constant at the location's latitude.

Month Monthly Optimal Yearly Fixed Flat (0°)
Tilt (°) PSH Tilt (°) PSH PSH

System Specifications

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Solar Power Generation

Estimate your solar panel output based on PSH data

Power generation estimates for each month, comparing Monthly Optimal Tilt, Yearly Fixed Tilt, and Flat (0°) configurations. Table shows daily and monthly values with annual totals at the bottom.

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

Hourly Power Generation

Generation vs. Consumption Comparison

Compare your solar generation against total electrical loads

Solar generation compared to electrical load consumption for each month.

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

% Loads Covered by Solar

-

Daily Battery Capacity Needed

-

Total Annual Solar Generation

-

Average Daily Solar Generation

-

Total Annual Consumption

0.00 kWh/year

Average Daily Consumption

0.00 kWh/day

Raw weather data from Visual Crossing Weather API.

Calculations and Analysis performed by Copper Tech.

© 2026 Copper Tech LLC. All rights reserved.

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Saved System Configurations

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Solar Panel Configuration

W

The total rated power output of all solar panels in watts under standard test conditions (STC).

%

System efficiency accounting for inverter losses (~3-4%), wiring losses (~1-2%), and mismatch losses (~1-2%).

Accounts for power loss from dust, dirt, pollen, and bird droppings on panels. 0.95 = 5% loss (occasional cleaning), 0.90 = 10% loss (infrequent cleaning).

Electrical Loads

Understanding System Losses

System Efficiency accounts for electrical conversion losses:

  • Inverter efficiency (~96-98%): Converting DC to AC power
  • Wiring losses (~1-2%): Resistance in cables
  • Mismatch losses (~1-2%): Panels don't all perform identically

Default 82% efficiency = 96% inverter × 98% wiring × 98% mismatch × 98% other.

Temperature Derating (automatic): Panels lose ~0.4% per °C above 25°C. On hot days (60°C cell temp), expect ~14% power reduction.

Soiling Factor accounts for dirt accumulation:

  • 0.98-1.00 (2% loss): Weekly cleaning, rainy climate
  • 0.95 (5% loss): Monthly cleaning, typical (default)
  • 0.90-0.92 (8-10% loss): Infrequent cleaning, dusty/arid climate

Common Household Loads

  • Refrigerator: 150-800W, 24 hrs/day
  • Air Conditioner: 1000-3500W, 4-12 hrs/day
  • Water Heater: 3000-4500W, 2-4 hrs/day
  • LED Lighting: 10-20W per bulb, 4-8 hrs/day
  • TV: 50-200W, 4-8 hrs/day
  • Computer: 100-400W, 4-12 hrs/day
  • Washer/Dryer: 1500-5000W, 1-2 hrs/day
  • Dishwasher: 1200-1500W, 1-2 hrs/day

Save System Configuration

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