The home energy budgeter
toolbox.
Compare energy budgets, battery runtime and simplified heat transfer.
8 useful places to start.
Use measured properties and realistic supplied assumptions. These estimates do not forecast weather or battery discharge behaviour.
Battery energy runtime
Estimate constant-load runtime after supplied usable-depth and efficiency factors.
Battery series/parallel arithmetic
Compare nominal pack voltage, capacity, energy and cell current sharing.
Solar array energy budget
Estimate energy from array rating, equivalent peak-sun hours and supplied derating.
Layered wall heat flow
Combine material and surface-film resistances and inspect interface temperatures.
Wire resistance & temperature
Calculate conductor resistance and apply a supplied linear temperature coefficient.
Appliance electricity cost
Estimate energy and cost from power, usage and your tariff.
Electricity bill estimator
Combine meter usage, unit price and a daily standing charge.
Power converter
Convert power units with clearly labelled standards.
A few things you
can tick off.
- Estimate usable battery energy
- Compare wall-layer resistance
- Translate panel rating into an energy budget