Forum Topic

Unified Solar Panels and Controllers Thread (FAQs, DIY Help)

  • Walang sumagot sa inquiry ni Dodick? Need ba muna mag apply ng net metering sa Meralco bago magpakabit ng service entrance sa mga electrical contractor?
  • pano kasi prang masyadong kumplikado at dami etse buretse nyang meralco pra lang mkpg apply ng net metering. me nabasa ako sa SPP forum, ginawang gatasan narin daw ng Meralco yan. Kung dmo papadulasan ang Engr nla eh tatagal tlga proseso. Parang ung effort at gagastusin mo ehh ibili mo na lang ng powerwall o setup nlng ng lifepo4 batts sa hybrid. kakawalang gana kpag maresib mo ung application form kasama ung "mga" requirements...haaaiisstt
  • need mo ng mahabang pasensya dyan sa meralco. nag apply ako dati, tinulugan lang pala application ko. 2 years walang progress. hanggang sa nakahanap ako ng contractor, sila na naglakad, nag ayos ng meter relocation / remodel pati sa LGU. pagkaalam ko, pinasok ulit yun application sa meralco, tapos bibigyan ka ng parang orange card ata na pede ng kumuha ng permit sa LGU at magremodel ng service entrance (2 electric meter ito). ibibigay na din nila yun meter based na gagamitin. siempre gastos. For me mas practical kung hybrid with capacity na kaya icover comsumption sa gabi. pero ok din ang may net metering, pang lifetime mo ng mareap ang savings (assuming di agad may masira sa system hardware). pagkakamali ko lang, 2kw system lang apply ko sa meralco. pag nag upgrade, back sa umpisa ulit, parang new application.

    -- edited by ands on Mar 30 2023, 06:22 AM
  • Medyo matagal nga process ng net metering, June kami nainstallan ng solar and may contractor din kami na nag ayos ng net metering ito timeline sa contract. Ngayon waiting nalang kami mainstallan nung net meter.


  • Nadale ka sa cost nyan.
  • actually halos ganyan din ang sinasabi sa amin ng mginquire sa meralco. lahat ng sagot ehh depende sa engineer, depende sa munisipyo blah blah blah. sa SPP fb gc meron ata talagang gumagastos ng 50k pataas! not sure lang kung ilang KW pero grabe nman kasi yun reqmt's! pano mo masabing pinu push ng gov't yan at sinusuportahan. nadagdagan pa tuloy gatasan ng meralco! onle en da pelens!
  • di talaga pangmasa ang net meter. pag maliit lang ang system mo, wag ka ng mag net meter, otherwise ang savings mo sa solar, sa net meter lang napunta. dagdag mo pa ang mga padulas. mas ok sya kung mataas ang solar setup.
  • ang current setup ko po ay 300watts panel, 30A controller and 1 2SM na motolite, ok lang po ba na i tap parallel yung battery ng kotse and scooter? di po kasi maka 12hrs na naka ilaw, 7 na 12vdc 5watts lang po ang load.
  • ako halos 8k+ lang from LGU to meralco so far nakabit na ang service entrance ko nung iapply net metering ko so binigyan lang ako ng yellow card at okay na pag di ka pumasa sa unang checking ni meralco may ikakabit sila na device sa lugar mo para pag aralan pa lalo if pde ka magbato ng kuryente sa meralco at sa transformer san ka nakakabit.
  • @RetiredGeNeRaL
    pwede po bang malaman ,mga magkano po nagastos ng katulad ng sa inyo?para po me idea po ako, kung sakaling mag pakabit ako ng solar,eh mga magkano ang iipunin para maka tipid kahit papaano sa gastusin sa kuryente,salamat po


    Sample ko yung pina-install ko.
    Total Price 200K, on-grid with net metering. all in na yung 200K
    Inverter is 6kW
    Solar Panel, 8pcs, 500W each. bale 4kW pa lang, upgradeable pa
    Dati kong electric bill is 4.5K to 5k monthly
    Nung nailagay yung net metering, nasa P900 ba binabayad ko on average
    This month na sobrang init, ang supposed to be bil naminbased on total kw/hr usage is around P7,800 pero P2,900 lang ang babayaran
    So savings monthly is approx 4.5k/month
    ROI is 44 months approx or 3.7 years. Mas iikli pa ito pag tumataas ang presyo ng koryenti
    Note: tumaas usage namin since nag solar, kaya approximate na yung ibang cost figure dyan

    -- edited by SIMARUN on Apr 19 2023, 10:02 PM
  • @paeng, @Dodick
    Walang sumagot sa inquiry ni Dodick? Need ba muna mag apply ng net metering sa Meralco bago magpakabit ng service entrance sa mga electrical contractor?

    Dito sa pampanga pag nag apply ka ibibigay ni DU yung mga requirements, kasama na dun yung design ng service entrance, (height from the ground, CB, etc). Then ipapalagay/ipapagawa mo na sa electrical contractor, then inspect ni DU, if pumasa sa requirement nila maghintay ka nalang para makabitan ng new meter
  • kakawalang gana kpag maresib mo ung application form kasama ung "mga" requirements...haaaiisstt

    ano po yung mga requirements ng meralco pag mag aapply ng net metering?
  • Eto ung sa mismong site nila
    How do you apply for Meralco Net Metering?
    <click here for link>

    then kpag kumuha ka sa kanila ng mismong form parang iba na kasi mas detalyado duon.... wait mo na lang mgnose bleed ka hehe. or you can look for someone to process it, browse lang po kayo sa SPP FB Group (Solar Power Philippines).
  • Wala akong makitang FAQ dito so I don't know if natanong na to.
    Once na makasetup ka na for example 5kw hybrid Lifepo4, on average anong additional expenses mo sa coming years such as maintenance and replacements (e.g. battery failure, inverter repair/failure, etc.) and when do you expect these to happen?

    edit: Usually pala 3 years lang binibigay na warranty sa battery. Pero after some googling 5 years daw ang lifepo4. But ano experience ng mga long term solar users dito?

    -- edited by roceanoz on May 09 2023, 12:24 AM
  • Wala akong makitang FAQ dito so I don't know if natanong na to.
    Once na makasetup ka na for example 5kw hybrid Lifepo4, on average anong additional expenses mo sa coming years such as maintenance and replacements (e.g. battery failure, inverter repair/failure, etc.) and when do you expect these to happen?

    edit: Usually pala 3 years lang binibigay na warranty sa battery. Pero after some googling 5 years daw ang lifepo4. But ano experience ng mga long term solar users dito?

    -- edited by roceanoz on May 09 2023, 12:24 AM


    Depende sa type ng battery i have meritsun batt and i have 10 years warranty.
  • @roceanoz
    well based on my experience sa solarista... mga additional na gastos ay hindi naman napupunta sa maintenance or replacement. normally ang ngyayari eh panay upgrade. like capacity ng batts, ng inverter, ng panels and it goes on. kasabihan nga ehhh it's never a necessity but more of a hobby specially sa mga DIY'ers. pero kung pasetup talaga ung solar u may want to invest sa safety lalot lifepo4 ang gamit. unahan mna ung tamang setup ng Hybrid inverter then HQ BMS & Balancer. Kapag masetup mo iyan lahat ng maayos, I will guarantee na malampasan mpa ung warranty period w/o any issue(s).
  • @xrampage @dodick
    Salamat sa reply nyo. But I decided na mag net metering na lang instead of battery. After some research much better daw dagdag gastos sa net metering kesa dagdag gastos sa batteries. Lalo na't bihirang-bihira lang naman mawalan ng kuryente sa amin (can't even remember the last time).

    For an average 350kwh monthly consumption, will a 3kwh package be enough? Pwde naman siguro mag upgrade if ever.
  • Pwde naman siguro mag upgrade if ever.

    Technically yes, pero if ever na mguUpgrade ka dadaan ka nanaman sa panibagong proseso. Sa application kasi need mo iindicate ung capacity. If you'll go for 3kwh mababa yan. Better go for 5kwh or higher, pra maximize mna agad ang setup mo.

    Tama lang din desisyon mo not to go for Batts. Optional naman yan since Hybrid na naman ngayon. Take note, make sure lang na ung Hybrid inverter na kukunin mo is pwede with or without Battery.
  • ^Plano ko mas mataas na ang inverter to accomodate yung dagdag ng panels in the future. So di pala pwde na mag add ka lang ng panels, need mo ulit i apply sa meralco? And yes, 5kw na pinapa quote ko.

    Maliit lang ba price difference sa inverter na w/ and w/o battery? I really don't have any plan to have battery. Pero if maliit lang naman difference, why not para flexible.
  • you should go with battery support. sa pagkaalam ko di naman ganun kalaki tsaka ngmamaximize ka nga ng setup. sooner or later mgdrop na rin ang LifePo4 batts prices lalot kapag lumabas na susunod na generation ng Batts. at sakali mgkaBrownout parin di natin alam ehhh... me pngBackup ka pa rin (totally satisfying your Solar needs).
  • @xrampage @dodick
    Salamat sa reply nyo. But I decided na mag net metering na lang instead of battery. After some research much better daw dagdag gastos sa net metering kesa dagdag gastos sa batteries. Lalo na't bihirang-bihira lang naman mawalan ng kuryente sa amin (can't even remember the last time).

    For an average 350kwh monthly consumption, will a 3kwh package be enough? Pwde naman siguro mag upgrade if ever.


    Hybrid has all the perks yung net metering mo sa grid tie only i can do it on my Hybrid setup in a 1mWh consumption sabihin mo half niyan is your solar use and meralco use sa 500kWh mo pa lang sa meralco 1mWh na bebenta mo. Twice always ang benta mo sa use mo.
  • In a Grid Tie setup this use and consumption of power can't be Zero bill but since naka hybrid ako naka zero bill ako.


  • ^Well you just need to add 19.5% more panel production of what you currently have to produce the same zero bill, then you can ditch the batteries (less cost). Disadvantage is no power during night blackouts. So only advisable, as I said, if your power is reliable like ours.
  • ^Well you just need to add 19.5%


    I don't think so 19% is enough as you pay 12 pesos per kWh and meralco will just buy at 6 pesos or 7 pesos. And you just put a solar that the main is to sell to meralco and one more what if your roof is not enough to accomodate many panels? Yes if reliable but for not with such hot climate so inconvenient to have no power. If you are thinking of ROI yes the grid is lesser in year to get ROI its like adding just 1 more year from the ROI of grid tie to the ROI of Hybrid. You need also to consider the rainy season less harvest but samegeneration charge pa din ang bibilhin ni DU sa iyo like 1/2 or less of the total kWh charge nila customer. For me its like buying a car in setting a solar why you buy a car?

    -- edited by xrampage on May 17 2023, 03:13 PM
  • I don't think so 19% is enough as you pay 12 pesos per kWh and meralco will just buy at 6 pesos or 7 pesos.

    Let me show you the numbers, they don't lie.

    Lets first compute how much power purchased from meralco cost (vs feed in).
    Meralco will cost (434.39/218.3) or 1.99 times more than you give meralco. Meaning if you want to get 100 kwh during non-production hours from meralco, you will need to feed in 100 x 1.99 = 199 kwh during production hours.

    Now 273.69 + 218.3 = 491.99 kwh total energy you need during non -production hours.
    Compute how much you need to produce as feed in energy...
    491.99 x 1.99 = 979.06 , meaning you need to feed in 979.06 kwh to meralco to withdraw 491.99 kwh.
    Hence, total energy needed is 461.69 kwh + 979.06kwh = 1,440.75 kwh.
    1,440.75 - 1,210 = 230.75 kwh how much more energy production you need.
    Since I don't know your setup, I just stated it in percent.
    230.75 / 1,210 = 19.07 % (Of course you need the corresponding panels, inverter, etc.)
    note: computing it this way already took into account the inefficiency of the battery.
  • sa tutuo lang para lang sa akin "hype" parin nmn talaga ang solar sabihin mna mpa Off-grid o On-grid ka khit pa Net metering. medyo matagal narin ako ngDIY solar wala pa yng SPP nyan at bilang pa lang talaga solar shop karamihan na sa palagid pa ng Sta Cruz/Raon. Kung malaking setup (pang Mayaman ba or Business) ROI or not hindi na rin nman pinapansin yan. Sa residential naman or png sariling gamit lang, mglalabas kpa din everytime sa mga gastos sa Solar. Naalala ko nun 32650 Lifepo4 6a pnagkaguluhan at unahan sa seller. Then mga GP prismatic then S168. Sa mga nka DIY gastos na naman. Di lang batts ng eevolve or "hype" pati mga Inverters and so on... so in Short pra ma satisfy lang na me Solar ka in the end gumagastos kpa din talaga. Kahit malaki na nagastos mo ng simula pa, hindi mo naman ito babangitin sa mga post sa GC or socmedia. Syempre palaging + experience or me bago kang ganitong setup "real talk" hehe.
  • Let me show you the numbers, they don't lie.

    Lets first compute how much power purchased from meralco cost (vs feed in).
    Meralco will cost (434.39/218.3) or 1.99 times more than you give meralco. Meaning if you want to get 100 kwh during non-production hours from meralco, you will need to feed in 100 x 1.99 = 199 kwh during production hours.

    Now 273.69 + 218.3 = 491.99 kwh total energy you need during non -production hours.
    Compute how much you need to produce as feed in energy...
    491.99 x 1.99 = 979.06 , meaning you need to feed in 979.06 kwh to meralco to withdraw 491.99 kwh.
    Hence, total energy needed is 461.69 kwh + 979.06kwh = 1,440.75 kwh.
    1,440.75 - 1,210 = 230.75 kwh how much more energy production you need.
    Since I don't know your setup, I just stated it in percent.
    230.75 / 1,210 = 19.07 % (Of course you need the corresponding panels, inverter, etc.)
    note: computing it this way already took into account the inefficiency of the battery.


    Lets not forget you have additional net metering for hybrid not just hybrid with battery.

    sa tutuo lang para lang sa akin "hype" parin nmn talaga ang solar sabihin mna mpa Off-grid o On-grid ka khit pa Net metering. medyo matagal narin ako ngDIY solar wala pa yng SPP nyan at bilang pa lang talaga solar shop karamihan na sa palagid pa ng Sta Cruz/Raon. Kung malaking setup (pang Mayaman ba or Business) ROI or not hindi na rin nman pinapansin yan. Sa residential naman or png sariling gamit lang, mglalabas kpa din everytime sa mga gastos sa Solar. Naalala ko nun 32650 Lifepo4 6a pnagkaguluhan at unahan sa seller. Then mga GP prismatic then S168. Sa mga nka DIY gastos na naman. Di lang batts ng eevolve or "hype" pati mga Inverters and so on... so in Short pra ma satisfy lang na me Solar ka in the end gumagastos kpa din talaga. Kahit malaki na nagastos mo ng simula pa, hindi mo naman ito babangitin sa mga post sa GC or socmedia. Syempre palaging + experience or me bago kang ganitong setup "real talk" hehe.


    At the end para ka lang bumili sasakyan nag setup ka solar para sa convenient sa house. Di ko lang alam sa iba kasi ako convenient first.

    -- edited by xrampage on May 19 2023, 07:42 PM
  • @dodick
    thanks sa personal opinion mo. it matters sa mga kagaya ng iba na interested and curious.

    @xrampage
    Ganito ba sir, siguro ang best example dito is yung meron ka sariling motorized water pump kesa naka NAWASA ka na tubig? I mean parang wala ka rin natipid, pero atleast di ka umaasa service ng NAWASA at ikaw na bahala sa supply ng tubig mo?

  • @xrampage
    Ganito ba sir, siguro ang best example dito is yung meron ka sariling motorized water pump kesa naka NAWASA ka na tubig? I mean parang wala ka rin natipid, pero atleast di ka umaasa service ng NAWASA at ikaw na bahala sa supply ng tubig mo?


    yes tama naman yan pero may matitipid ka pa din in the long term at the end makukuha at makukuha mo pa din ang ROI if you are talking about ROI. Sabihin na nating ang setup ng isang hybrid na 10kW panels + 10kWh battery nung nag painstall ako is 700k sabihin natin average ng meralco na di mo babayaran sa isang buwan is 11k so divide natin 700k sa 11k nasa 5 years and 4 months so after that nabawi mo na ang pinangbili mo ng solar. So panong walang matitipid in the long term? Yung battery ko is a 6000 cycle 1 cycle per day nasa 16 years life span and 10 years warranty.
  • @xrampage
    That's nice kung ganun, meron talagang ROI. So good investment pa rin. Inexample ko yung sarili namin motorized pump. Dito di ko alam kung may ROI kami. Di ko na inalam magkano consumption nito kuryente vs kung nag Prime Water kami. Mas prefer ko lang may sarili, ako na bahala tubig namin. Convenience din mismo target ko.

    Ano comment mo sir sa Power Station + Solar compared sa mismong solar setup sa bahay assume pareho worth 130k. Kung parehong sa bahay lang naman gagamitin? Curious lang. Ano mas ideal?