From my experience, getting 100% in Malaysia is possible. One of my string has 3.89kW and has produce till 3.99kW during one weekend. 3.99kW is my inverter max output and gave "max output limit" notification on display panel. 
From day to day observation, daily peak generation can hit 80-90% of rated capacity during fine weather.

This is certainly a good sign for us in Malaysia where our system is able to perform greater than rated value.  I believe this is with the combination of higher efficiency system and stronger sun energy we have in Malaysia.

Based on my system performance I managed to get from 89% - 110% of the rated output. 

You asked some good questions. My system clearly showed brand of panel and marketing claims are not critical. Solar panel capacity is rated by STC but this does not mean actual Malaysia condition always below Standard Testing Conditions. 

My system operated for 11 months. IMHO, system output (kW) is not my concern. It is the total daily generation which matter. My best daily performance is 5.2+kWh/kWp. On the best performance day, the max output is around 80% of rated output. The main reason for high daily generation is CLEAR SKY with no cloud. Our biggest concerns are CLOUD and RAIN.

My inverters have lower capacity than panels capacity. They are working well. Using lower capacity inverters means the inverters can always operate at high efficiency range. Most inverters high efficiency operating range is above 80% load. However, IMHO, don't undersize the inverter more than 10%. This is up to owner and installer choice.

You are right that the type of panel we use and temperature of the day do affect the overall efficiency.  In fact I am using Sunpower panel for my system and I am happy with the performance so far. 
Based on the short 21 days since commissioning, my system achieved two highest performance under 2 conditions.

1. 5.44kWh/kWp with peak output at 110% of the rated output under partly cloudy day, not very hot day.
2. 5.40kWh/kWp with peak output at 87% of the rated output under hot day.

Hi,
i m new here.  i m from Kedah. My best daily performance is 6+kWh/kWp ( just for 2 day only). My 11.25 kw system T & C at Dec 2012. The average performance until now is 4.2kwh/kwp. (i don know how to calculate the out put rate, nor don understand what is kVar or exp kWh. because my KACO inverter just show simple number at the small LED screen, i have to press a button each time to read something that i don't know. I just know to divide the total TNB meter reading by day, then by 11.25, and get the average performance, am i right?). i use German Qcell solar panel.
My second 12kw system had just complete install and waiting for TNB T & C metering. This time I use Korean Hanwa(Made in China) solar panel and German KACO inverter. And in future i m planing to install my 3rd system with China brand solar panel with German KACO inverter. At that time, sure we will know the performance of each of the solar system, but still depand on the position of facing of the solar to the sun.
I had install a speed dome CCTV on top of the roof. in future i will update d CCTV net work system and you all can see live of my solar. u even can zoom and pan tilt go left right up down. .

I agree the nature of the roof top plays a big part in the system performance.  From the camera, I believe you do not have any shading problem and all of you panels start working as soon as there is sun.  Not like most of us where we do not have ideal roof condition where shading is one of the biggest negative factor.  For my case, only 60% of my panels are exposed to full sunlight in the morning.  Overall my system only have full sunlight exposure(no shading) from around 11am - 4pm.  Beyond this timing, the system is not operating at full speed.

My roof facing east and west and the roof having air well structure blocking some of the panels facing west in the morning.  The west facing string is not able to perform due to shading in the morning.

I'm thinking to clean the Panel with water spray.With this activity can improve the productivity by how much Percentage ?

My 1st system T&C at DEC 2012 used both German brand panel & inverter cost me RM12,000 per KW (maybe is higher but reasonable at that time).

This year, my 2nd system used Korean panel & German Inverter (which has completed installation last 2 month and still waiting for T&C right now ) cost me RM9,000 per KW. Vendor quote me RM10,000 per KW if I use both German panel & inverter.

I'm considering to install 3rd system in 2014, vendor quote me and my friend RM10.00-8% (RM9,200) per KW, if I use both German panel & inverter.

Hi all Sifus,

Would like to post a question here .

Just noted if we are using local assembled solar panel, an additional rate of 3 cts per KW is entitled.

Would like to get a feedback / view on the the Q-cell solar panel which is manufactured in Malaysia with technology from Germany.

My initiate research on the net shown Q-cell is one the top brand for solar panel. Is this the case?

And how it is compared to Panasonic / BYD / Hanwha or any other solar panel?

Also appreciate feedback from forumers who has installed this Q-cell solar panel ...

I think most reputable solar panels on the market are OK.  the trick is to coax the maximum solar power generation from the panels.  this is achieved by efficient inverter and good system design and quality installation job.

i am a delighted customer of my SI :-)

What type of system configuration(panel type and inverter) you are going to use?

SEDA may change the system

they know the UNFAIR system previously, who submitted earlier on the date of release quota who would get the quota.
this allows speculation and SP jammed the lines to submit application.

do suspect SEDA may be suspended this project earlier if the current TNB popping more tariff on normal consumers.

anyway, 3 yrs later, new battery will be cheap, safer and more efficient, off-grid may be a big issue to TNB monopoly role. perhaps TNB should announce more strict rules to protect themselves in energy supply role. e.g. generating solar energy and store in battery to use is ILLEGAL!

my1cent