Help Needed

I am after project called uses of Wireless Sensor Network for measuring the flow of current(electricity).
I need help concerning which devices should I go for. As to be more specific hardware requirement as I am totally confused where should I head towards..

Much appreciated
Tons Tons of thanks

You are confused because the project is very poorly defined.

What sort of (AC or DC) and how much current will you be measuring?

Why do you need a wireless network?