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Home solar 4 months in.
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Avangelice
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 Jun 1 2024, 01:17 PM
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QUOTE(dwRK @ Jun 1 2024, 12:11 PM) Avangelice... saw your old question in other tered about ev charging but didn't see any satisfying reply... tot i'd share my views here... option 2 will be most flexible as a dedicated system... you connect power source (panels/tnb/or battery) to the inverter, and charge your ev through the inverter... you then configure supply priority, solar 1st then either tnb or battery for 2nd and 3rd priority... this way if solar power is not enough, it will supplement from tnb/battery... also when you can charge (day/night) is crucial the remaining question is then balancing/optimizing the capacity/cost... if big might as well just go full nem... if too small then roi no good... Hi thanks for the reply and yes this was the answer I was looking for. So you can configure in system to give priority what to charge via the solar generation. Very nice. Thank u |
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dwRK
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Jun 4 2024, 11:21 AM
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my simple estimates... keep here for my use...  but feel free to comment  QUOTE ev charging
- max = 2.3kw (granny limit)
- min = 1.4kw (car limit)
panel
- 410w x 6ea = 2.46kw
- 410w x 4ea = 1.64kw
inverter
- for max = 3kw
- for min = 2kw
klang valley sun
- 2.46kw x 3.5hr = 8.61kwh
- 1.64kw x 3.5hr = 5.74kwh
mileage
- 8.61kwh / (12.5kwh/100km) = 68.88km
- 5.74kwh / (12.5kwh/100km) = 45.92km sun hours could use 3.3, but if not hitting mileage should be ok i think... |
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adamw
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Jun 4 2024, 12:05 PM
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QUOTE(dwRK @ Jun 4 2024, 11:21 AM) my simple estimates... keep here for my use... but feel free to comment sun hours could use 3.3, but if not hitting mileage should be ok i think... No battery? |
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alucard89
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Jun 4 2024, 12:21 PM
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Hi, does it have like an open api where you can fetch all the enegy measurement to something like homeassistant?
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dwRK
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Jun 4 2024, 01:06 PM
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QUOTE(adamw @ Jun 4 2024, 12:05 PM) no. car is at home all day, used mostly in early morning n evening... car is the battery  |
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bee88
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Jun 4 2024, 01:08 PM
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QUOTE(dwRK @ Jun 4 2024, 01:06 PM) no. car is at home all day, used mostly in early morning n evening... car is the battery It doesn’t work this way. Wha you are calculating is dc. So u will need a dc gun. For charging. Meanwhile , the usual gun we have at home it ac. So u can’t purely use solar to charge. |
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adamw
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Jun 4 2024, 01:17 PM
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QUOTE(bee88 @ Jun 4 2024, 01:08 PM) It doesn’t work this way. Wha you are calculating is dc. So u will need a dc gun. For charging. Meanwhile , the usual gun we have at home it ac. So u can’t purely use solar to charge. buy this  DC to DC |
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dwRK
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Jun 4 2024, 01:41 PM
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QUOTE(bee88 @ Jun 4 2024, 01:08 PM) It doesn’t work this way. Wha you are calculating is dc. So u will need a dc gun. For charging. Meanwhile , the usual gun we have at home it ac. So u can’t purely use solar to charge. am doing a quick energy/power balance... there are ac/dc conversion losses and cable losses that i didn't include... pv supply just needs to overcome these... so example, if 410w pv not enough, can try 430w or add extra panel... also car will charge at whatever power it can get, if not enough it will just takes longer |
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dwRK
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Jun 4 2024, 01:48 PM
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QUOTE(adamw @ Jun 4 2024, 01:17 PM) buy this DC to DCthanks ... i know about this new costly device been looking around for mode 4 evse circuit... in the usa, ppl buys used phev/bev batteries and hook them up to their solar but they have different circuits... |
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bee88
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Jun 4 2024, 02:05 PM
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QUOTE(dwRK @ Jun 4 2024, 01:41 PM) am doing a quick energy/power balance... there are ac/dc conversion losses and cable losses that i didn't include... pv supply just needs to overcome these... so example, if 410w pv not enough, can try 430w or add extra panel... also car will charge at whatever power it can get, if not enough it will just takes longer Just go for nem. U can cover not only ur home usage but charging completely. |
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dwRK
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Jun 4 2024, 02:22 PM
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QUOTE(bee88 @ Jun 4 2024, 02:05 PM) Just go for nem. U can cover not only ur home usage but charging completely. thanks... nem is probably what i will do... just keeping the old brain cells active |
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sihamsedap
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Jun 4 2024, 02:39 PM
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Getting Started
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shit man
may i bantai aircon je, almost 3-4 biji on whole day
main sampai 1522kw, kena penalty icpt (around 150 ccb)... my solar pun x cover all..
got to pay rm500
normal days around 20-50 only... kns...
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etan26
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Jun 4 2024, 02:56 PM
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QUOTE(sihamsedap @ Jun 4 2024, 02:39 PM) shit man may i bantai aircon je, almost 3-4 biji on whole day main sampai 1522kw, kena penalty icpt (around 150 ccb)... my solar pun x cover all.. got to pay rm500 normal days around 20-50 only... kns... Should have monitor your daily usage, mine last 3 months all 148x and 149x ... really hot weather issue. |
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adamw
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Jun 4 2024, 04:37 PM
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QUOTE(sihamsedap @ Jun 4 2024, 02:39 PM) shit man may i bantai aircon je, almost 3-4 biji on whole day main sampai 1522kw, kena penalty icpt (around 150 ccb)... my solar pun x cover all.. got to pay rm500 normal days around 20-50 only... kns... Pay rm50 for GET, no ICPT upto 1500kW. |
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TSnetflix2019
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Jun 4 2024, 05:43 PM
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QUOTE(adamw @ Jun 4 2024, 04:37 PM) Pay rm50 for GET, no ICPT upto 1500kW. I thought will increase price for energy unit? Enough to offset the icpt ? |
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adamw
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Jun 4 2024, 06:29 PM
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QUOTE(netflix2019 @ Jun 4 2024, 05:43 PM) I thought will increase price for energy unit? Enough to offset the icpt ? Share by this FB user below:- FB Attached thumbnail(s)
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IrIwish
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Jun 7 2024, 11:20 AM
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New Member
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Anybody do carport before and can share their experience?
I am planning to extend by carporch for one more car. Instead of building the porch then solar on top, I am thinking a solar roof/carport would be a better choice?
The current porch roof gets sunlight pretry much all year round without shading.
Looking for some insights and sharing from other
Thanks
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Ivan113
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Jun 7 2024, 02:05 PM
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hey guys, my house db box is in the middle ( under stair ), if connect the wire from inverter, they usually just do trunking to cover up the cable. Are there cases where the wall is hack to conceal the wire instead?
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john72
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Jun 7 2024, 02:16 PM
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Getting Started
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Anyone from Sabah installed solar ?
Can't find any info regarding SESB and solar
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Jingle91
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Jun 7 2024, 02:21 PM
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QUOTE(Ivan113 @ Jun 7 2024, 02:05 PM) hey guys, my house db box is in the middle ( under stair ), if connect the wire from inverter, they usually just do trunking to cover up the cable. Are there cases where the wall is hack to conceal the wire instead? My house is strata landed, so the trunking pipe at the back yard wall have to be concealed, can't fix it on the wall surface This post has been edited by Jingle91: Jun 7 2024, 02:21 PM |
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