THE FIELD LIBRARY
Understand the result.
Then use it.
Each guide starts with a real planning question and works through a clearly labelled example.
6 guides
Solar · 7 min
Size solar from energy use, not your bill total.
Work from 12 months of kWh, check solar yield, round to whole panels, and test a lower-generation case.
Read the field guide Solar · 6 minWhy 100% solar generation is not a zero bill.
Compare daytime use and exports with an explicit energy balance, and avoid overstating solar bill savings.
Read the field guide Battery storage · 7 minSize backup for the loads you actually need.
A reproducible critical-load example that separates battery energy, inverter power, reserve and ageing.
Read the field guide Battery storage · 6 minA battery can have enough energy and the wrong voltage.
Use a 469-cell example to check the full voltage range, series and parallel topology, and PCS compatibility.
Read the field guide Dispatch · 6 minWhen a battery schedule asks for more than it can deliver.
Follow a one-hour SOC calculation, check the energy balance and understand clipped battery dispatch.
Read the field guide EV charging · 6 minWill your EV be ready by morning?
Translate driving into wall energy and test vehicle, charger, site-power and connection-window constraints.
Read the field guide