GUIDES

Energy guides

Practical, checkable explanations that pair with the calculators — same models, same assumptions, no black boxes.

Five steps from a load list to a bank size: daily consumption, autonomy, chemistry, the formula and the sanity checks.

Why a 100 Ah battery is not 100 Ah of usable energy — and what DoD does to runtime, sizing and battery lifespan.

Not daylight hours: what the unit actually measures, how to look up your location and how to use it without fooling yourself.

When the cheap controller is fine — and when it silently throws half your panel away. With worked numbers.

Every constant watt costs about 2.2 € a year. Find your phantom loads, measure them and cut the ones that matter.