The 3rd meter is one I installed to measure what energy I export. basically it clocks up when consuming energy from the grid and counts down when exporting. Since the installation of the meter I've now installed an iBoost immersion heater controller that diverts any surplus energy that we do not use in to the immersion heater. When the immersion heater is up to temperature the surplus energy goes to out to the national grid.

I had our quarterly electric bill the other day (this was probably 2007ish), which asked for £136!!! Which I thought was far too high. Anyway after checking my meter reading I found it read less now than when it was read three months ago :o). Boy did I have a hard job explaining that to the electric company. I still ended up having to pay about £18 in standing charges :o(

9th June 2008 actual meter reading 1583   (from energy suppliers meter)

initially paying 12.64p/kWh
then rose to 14.93p/kWh

Standing charge was 13.04p/day
then dropped to 12.53p/day

All plus 5% VAT

For the quarter we paid £36.83

Good energy charges from our bill dated 6th June 2008

1st April 2008 actual meter reading 1389  (from energy suppliers meter)

paying 12.64p/kWh

Standing charge 13.04p/day

All plus 5% VAT

For the quarter we paid £61.19

Energy generated

Initial reading 21st May 2008 3520units (from PV generation meter)
Final reading 1st October 2008 4922.23units  (from PV generation meter)
Total green units generated @09p/kWh = 1402.23 kWh = credit payment to us = £126.20

PV generation meter - 5113.40 kWh
Energy suppliers meter - 1638.0 kWh

PV generation meter - 6127 kWh
Energy suppliers meter - 3369 kWh

PV generation meter - 8040 kWh
Energy suppliers meter - 3682 kWh

Meter reading @ 6th December 2009

PV generation meter - xxxx kWh
Energy suppliers meter -  4450 kWh

7th November 2008 - 4th December 2009

Solar power generated - 2,927 kWh (approx 225 kWh generated per month Or approx 7.5 kWh per day)
Power purchased from grid - 2,044 kWh
 

PV generation meter - 8,208 kWh
Energy suppliers meter - 4915 kWh

Meter reading @ 3rd May 2010

PV generation meter - xxxx kWh
Energy suppliers meter - 4501 kWh

Meter reading @ 25th July 2010

PV generation meter - 10,019 kWh
Energy suppliers meter - 4598 kWh

PV generation meter - 11,210 kWh
Energy suppliers meter - 5334 kWh

3,002kWh generated since 20th February 2010
419 kWh used from the grid

20th February 2010 - 17th March 2011

Solar power generated - 3,002 kWh (approx 230 kWh generated per month Or approx 7.72 kWh per day)
Power purchased from grid - 419 kWh
 

PV generation meter - 13,084kWh
Energy suppliers meter - 00072 kWh - We had our meter changed to one that did not run backwards, a very big bummer! So we don't get any credits for juice fed back in to the grid. Last reading of old meter 6756 kWh

1,874 kWh generated since 17th March 2011
1,494 kWh used from the grid

PV generation meter - 13,257kWh
Energy suppliers meter - 00161 kWh -

1,874 kWh generated since 17th March 2011
1,494 kWh used from the grid - remember no credits for exports :o(

Meter reading @ 7th March 2012

PV generation meter - 14,053 kWh
Energy suppliers meter - 01159 kWh -

remember no credits for exports :o(

I have now obtained another meter (not installed yet) so hopefully soon I'll be able to accurately calculate the import/export of energy.

Meter reading @ 15th June 2012

PV generation meter - 15,045 kWh
Energy suppliers meter - 01619 kWh -

Not yet installed the additional meter

Meter reading @ 4th December 2012

PV generation meter - 16,421.94 kWh
Energy suppliers meter - 02457 kWh -

Not yet installed the additional meter

13th January 2013

Installed additional meter to calculate exported power.

PV generation meter - 16,481.62 kWh
Energy suppliers meter - 02776 kWh -
3rd Meter - 00000kWh