Annual electric-energy balance calculator

An electricity-only balance uses imports and credited exports; it does not prove a whole-building carbon claim.

E_{\text{net}} = E_{\text{import}} - E_{\text{export}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

E_{\text{net}} = 420{,}000 - 400{,}000 = 20{,}000

Symbol	Meaning	Unit
$E_{\text{net}}$	net annual electricity import	kWh/yr
$E_{\text{import}}$	annual imported electricity	kWh/yr
$E_{\text{export}}$	annual credited electricity export	kWh/yr

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.