I have recently Just come across PV module that’s marketed as 235Wp +7% to +12% To me that’s a 251Wp module with 0-5% variation in output At first I was thinking – perhaps this is just marketing hype – but on reflection I am not so sure it isn’t more significant … The module rating …
Monthly Archive: January 2012
Jan
30
Jan
25
Legal actions, Government announcements and FIT uncertainty
One thing is certain about the Feed in Tariff at the moment – there is currently a lot of uncertainty! FIT rates were not originally scheduled to be changed before 1st April 2012, yet at the end of October, in launching a consultation on the FIT scheme, the Government announced significant cuts to the FIT …
Jan
19
SAP 2012 and solar PV
The Standard Assessment Procedure (SAP) is used to assess the energy performance of dwellings and includes a section to estimate the annual performance of a solar PV system. PV installers should be very familiar with the PV – SAP calculation as it is the method currently proscribed under the Microgeneration Certification Scheme (MCS). A proposed …
Jan
12
Solar PV shading
A low afternoon sun is shining on our office PV system just now – and the back row has a small amount of shading on it (was predicted in our modelling). The photo below was taken 10min ago – it shows partial shading on 4 of the 10 modules in the string. This part of …
Jan
11
AC modules and DC isolators
Looking at comments on the draft of Edition 3 of the PV guide … bit surprised we didn’t get more comments on the AC module part of section 2.1.13 – d.c. isolation and switching Edition-3 of the Solar PV guide was issued as a draft for Public comment in October … this has a section …


