Energy Usage Calculators

These are some websites where you can calculate how much energy you use and, on some, how much it will cost.

This one is a New Zealand website so it will most likely be the most relevant to us

Energy usage calculator http://www.nzbcsd.org.nz/energyefficiency/content.asp?id=229 

This one allows you to calculate cost though may be unreliable because its a US website 

Electricity usage calculator http://www.electricity-usage.com/Electricity-Usage-Calculator.aspx

I found this website to be the most user friendly and it also calculated costs, the only down falls were that again its an overseas website so it may be unreliable and when you selected how many items you had it sometimes had a minimum of two when its likely you would only have one. 

 online usage calculator http://www.consumerspower.org/home_energy/billestimator.php

Over all I thought that if I were to design a social website including an easy to use calculator would be key feature.