Current Cost notes

Information received in an email from Current Cost:

1) Yes, the data is sent from the transmitter every 6 seconds. It's an instantaneous reading taken every six seconds.

2) The device doesn’t store at 6 second resolution:-

The daily sectors are

11pm-7am         night

7am-3pm          day

3pm-11pm        evening

The last 31 days Energy Usage is output as 2-hour aggregates of KWHr (3720

values covering 9 Appliances plus Whole House),

the data being aggregated starting at odd hours, eg 23:00 to 01:00, 01:00 to

03:00 etc. This accommodates industry requests

to view evening and night data segments distinguished at 23:00.

The last 90 days Energy Usage is output as daily aggregates of KWHr (900

values covering 9 Appliances plus Whole House).

For simplicity, this data overlaps the 2-hr history store in the present

version.

The last 84 months Energy Usage is output as monthly aggregates of KWHr (840

values covering 9 Appliances plus Whole House).

For simplicity, this data overlaps the 2-hr and Daily history stores in the

present version

So the day periods do not start at 00.00, but at 23.00

The monthly data is simplified into periods of 30 days regardless of the

month.

I hope this helps you.

Chris Dalby's blog states that the Bridge only sends data every 5 minutes.

Current Cost uses Pachube for its backend data management

XML details:
http://www.currentcost.com/cc128/xml.htm

A Perl script for logging data to MySQL: http://www.brassedoff.net/wp/?p=752