calc.engineer / Solar & Power / Solar Load Audit

Solar Load Audit v1.0.0

Calculates total daily energy consumption from an appliance list — the critical first step before sizing solar panels or batteries. Enter each appliance with its wattage, hours of daily use, and quantity. Outputs total daily kWh (with configurable safety margin for surge and inrush current), peak simultaneous wattage, and recommended inverter VA rating per NEC 125% continuous load rule. Feeds directly into solar_sizing (daily_kwh) and battery_autonomy (daily_kwh). Essential for residential, RV, cabin, and off-grid system design.

feeds solar_sizing →
List of appliances with wattage, hours per day, and quantity
Safety margin percentage to account for surge/inrush current, default 20%
Fill in the inputs and Compute to see the structured result.

From an agent (MCP) or the API

curl -X POST https://calc.engineer/api/solar_load_audit \
  -H "Content-Type: application/json" \
  -d '{"appliances": …, "safety_margin_pct": …}'

MCP: connect to https://calc.engineer/mcp and call solar_load_audit.

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