get https://www.wattvision.com/api/v0.2/elec?sensor_id=&api_id=&api_key=&type=&start_time=&end_time=
Your API Settings Page can be found here.
the "type" parameter must be one of:
rate returns an list of timestamps and watts at that timestamp
consumption returns a list of timestamps and delta watthours
latest_rate returns the most recent rate in watts (as long as some data was uploaded within the last two hours)
net_consumption returns the total net consumption between any two points in time (only available on paid accounts)