JDK Solar Performance Estimator

Estimate CCTV system runtime under continuous cloudy conditions (worst month)

System Configuration

Include IR LEDs, heater, PTZ motor

Estimated Runtime — Worst Month

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Est. runtime in worst month
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Worst month: --  ·  PSH: --

Monthly Runtime Analysis

Month PSH Solar Charge
(Wh/day cloudy)		 Daily Load
(Wh)		 Net Deficit
(Wh/day)		 Runtime
(Hours)		 Status

Runtime Color Guide

<48h Critical 48-60h Insufficient 60-72h Marginal 72-96h OK 96-120h Very Stable 120h+ Excellent
Notes & Assumptions
  1. Runtime assumes battery starts fully charged at 10am, followed by continuous cloudy weather.
  2. Cloudy day solar charge = 15% of clear day output (conservative industry estimate).
  3. System derating factor of 78% accounts for angle loss, dust, cable loss, MPPT efficiency, and temperature.
  4. Usable battery capacity = 90% of rated Ah (LiFePO₄ with 14.2V float to 10.8V cutoff).
  5. PSH (Peak Sun Hours) data sourced from BoM, PVWatts, and Climatebiz for Australian regions.
  6. Camera power should include all camera power consumption (IR LEDs, heater, PTZ motor if applicable).
  7. Runtime >9999h means solar charging exceeds load even on cloudy days (system self-sustaining).
  8. The 'Worst Month' result shows the minimum runtime across all 12 months for the selected region.