my july bill
import: 319 kw
export: 843 kw
generation: 1040 kw
selco: 197 kw
reason why import drop drastically is because my 10yrs old 2.5HP non inverter AC breakdown beyond economic repair and i replace it with inverter type of same HP.
god, that old AC really devouring all the kW

Precedent already set, anytime govt. can change their policy and formula and leave solar users bleed to dry. Need to be extra sceptical this time. Later if invest more for battery under SELCO then few years change to unfavorable rate/policy habislah, no more blood to bleed. NEM capital gone, SELCO/hybrid capital gone. Need guaranteed like govt. pay capital and fix rate with fair termination/exit clause.

the new billing so so so complicated...
until now i also dunno how to calculate it.

Okay i finally understood.

To keep things ultra simple. we used to pay 22sen/kwh nett import. Now changed to 44sen/kwh. The effect is larger the higher your nett import .

Then those who have surplus getting affected also. Because no more negative billing, so the excess energy cannot be used to offset all the caj (SST, KWBTT, RM10)

This will lead to the situation where.
a) RM600 monthly bill ppl who installed RM400 solar system. Their monthly bill supposed to be RM200 end up become RM400. So ROI doubled.
b) RM600 monthly bill ppl who installed RM600 solar system. Their monthly bill supposed to be RM0. End up have to pay SST+KWBTT+RM10 minimum. So ROI kind of increased about 3%

End of the day. The more your nett import, the more it affects the ROI which is exponential somehow.

do this mean, as long as my export > import , then will have zero impact to me?
which currently happen to me.
on the month i have no more balance and have import > export, then my rate is higher ?

so, with ToU or not does not make any difference, right? no need to apply for those under nem?

how  i understand so far:

for user below 1000kwh, solar system 9 kwp or lower ie generation below 1000kwh..

if import = export, or import < export..no extra cost in bill, but export value/average electric rate lower than previous tariff..

if import > export, the extra kwh is entitled for EEI, so the overall cost per kwh will be lower..hence more worth..

so? this will encourages more usage lol..if we aim for lower overall cost per kwh..in range of around 600 to below 1000kwh..

need to use EV - jimat kos minyak and can get lower rate electric for charging haha..

but need to control usage below 1000kwh import, better if below 600kwh..

Let Say system 6.15kwp, this is based on my consumption in 2 months..
Generation - 650 kwh
Selco - 250 kwh (try charging at noon)
Export - 400 kwh
usage total household - 500 + ev charging 300 = 800, so minus selco, 800-250=Import = 550
for EEI, I - E = 550 - 400 = 150, eligible for -10.5 ct/kwh
Bil = RM66.645-15.75=rm50.90

If can maximise selco, charging more at noon
Selco - 350 (150 household use, 200kwh for ev)
Export - 300
Import = 800-350=450
EEI = 450-300 = 150 x -0.21 ct (better rate) = 31.50
Hence bill = 66.645-31.50 = RM35.145

See...cheaper bill, cheaper rate but same consumption n same solar system..

lol.... i see what you mean

because getting sealion7 without extra using AC, counting 85kwh (lamsum including heat lost), 5 day per charge.
that would be 85x6 (30days) 500kw on top 300.

my calculation right?
so if i cant get that 500kw from car alone, or 300kw from home appliance down. i will be on high rate section.
is it really worth to run 1phase solar for this setupo/application/situation?

let say one month additional RM50, 1 year will be RM600.. 5 years will be RM3k..
the ROI further stretch since RM4k rebate now become RM1k ...
nvm.. then our TNB Pricing is revise every 3 years.. then increase again.. RM1k rebate become 0...
So .. not sure still hv ROI 

not sure but my file calculation =  (Total - Rebate) / average monthly bill ....

now rebate drop and average monthly bill drop with new tariff

example 650kwh..with roughly calculation

total solar (18k - 4k rebate) / 275 (old tariff) = 51 months

now total solar (18k - 4 rebate) / 214 (new tariff) = 65 months or (18k - 0 rebate) / 275 (old tariff) = 65 months

i think some people also commented the ROI slight longer now.. 

Some company like mine warranty claim no charge BUT labour to dismantle and change got charge.
Also many worried in solar company close shop, who gonna respond to the warranty claim.

So it is nice to get long warranty but the problem is the company handling the warranty sure got labour charge especially if need skylift and most importantly, if company close shop, who gonna handle the warranty claim. Many company no want to handle warranty claim that was installed by other company not related to theirs.

Solar panels also need maintenance once in a while, the cost do adds up but depends on usage, for me, either break even after 10 years or will earn a couple of years of free solar. Better than no solar especially since daytime, my parent also use air cond, the solar daytime generation contra that. Worth it.

Also warranty for PV if spoil but does not cover degradation over the years, sure the performance will drop.

string inverter is not proprietary either, and can be easily replaced by DIY if you have electrical / electric knowledge, it is also easily reachable unlike micro inverter require to climb up to roof.

design life span is 1 thing, but never forget, micro inverter is a the roof top that shine and rain.

plus our weather is 365 extremely hot or crazy rain.
is Micro inverter designed for that?

also many standard is tested in lab test with 25C for the component life.

Depend on the quality of the micro inverter, low quality micro inverter may not be able to withstand >50 degree environment every day, lifespan shorten is expected for those cheap and low quality inverter.

anyway, both string and micro inverter have their pros and cons, only inverter suitable to your house environment is the best choice.

do you know what is inverter?

what like solar is your solar panel.

Inverter and component inside scare heat.
yup yup,

to prevent direct heat from Sunlight, dust or bee, warp nest.

most string inverter got fan to remove heat created when converting DC to AC.

I not sure how high heat do our rooftop can go when running the Microinverter.
but what they tested is 85C for 1h and ram down to -40C for 200 cycles

our environment is can be 6 to 8 hours of constant heat. plus how hot is the inverter at the roof top combine with solar panel heat and DC to AC conversion heat add up together.
maybe need someone to use thermal imaging to check it.

200 cycle = 200 hours of test.
ours if let say 10 years and average 6h of extremely hot.

= 365 * 10 * 6 = 36.5k hours

operating temp excluding environment temp.

most testing is in the lab and not real condition specially in Malaysia,
humid and hot.
dry and hot is very different with humid and hot.
not sure the use MTBF/MTTF or ALT to predict 25 years.

hopefully is ALT which much higher temp, if MTBF, then good luck.

So far okay la. Haven’t over the warranty period yet for me.  But Their price is reasonable for the labour anyway for year 6 onwards. Just few hundred and can have coverage for another year with unlimited service request.

more of if the mirco inverter company close shop, then gg.

cause PG will not able to honor the micro inverter or even hosting the software.

just imagine the micro inverter software not accessible anymore.

it happen once in USA, which the company need to 100% change all the micro inverter for the client by own cost as the manufacturer kena buy over by another company.