1. What is a Solar Power Estimate Calculator?

Definition: This calculator estimates the daily energy production of a solar panel system based on panel power, sunlight hours, and system performance.

Purpose: It helps homeowners and solar installers predict energy generation for system sizing and ROI calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy production (kWh)
• \( P \) — Panel power rating (kW)
• \( H \) — Daily peak sunlight hours
• \( PR \) — Performance ratio (0-1)

Explanation: The formula accounts for panel capacity, available sunlight, and system efficiency losses.

3. Importance of Solar Energy Estimation

Details: Accurate estimates ensure proper system sizing, financial planning, and meeting energy needs.

4. Using the Calculator

Tips: Enter panel power in kW, average daily sunlight hours, and performance ratio (default 0.75). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is performance ratio?
A: It accounts for system losses (0.75 = 75% efficiency after considering temperature, wiring, inverter, and other losses).

Q2: How do I find daily sunlight hours?
A: Use solar maps or local meteorological data for your location (typically 3-6 hours in most regions).

Q3: Should I use panel nameplate rating or actual?
A: Use nameplate (STC) rating unless you have specific performance data for your conditions.

Q4: How do I calculate monthly production?
A: Multiply daily result by 30, or use monthly average sunlight hours.

Q5: Does this include seasonal variations?
A: No, this calculates average daily production. For annual analysis, use monthly sunlight data.