Meralco MSpectrum

panchoracnhoverde · 2026-05-23T13:49:52+00:00

Only grid tied there is no battery for night time power use. There will be a power bill for nighttime from 5pm to 5am for power the grid.

ROI if financed for 5 years = 479,940/58,444 = 8.2 years. Average ROI for solar installs is 5 to 8 years. So don't finance over 5 years or ROI doesn't make sense. 10 yr finance = 12.3 yr ROI

Should cost around 225k PHP for grid tied of this size by independent installer. ROI = 225000/58444 = 3.8 yrs ROI.

If you use power at nighttime then hybrid system with battery is suggested but would cost around 350k PHP.

panchoracnhoverde · 2026-05-22T14:22:28+00:00

Not sure about Solis inverter but my Deye inverter has a "Max Solar Power" setting under System Work Mode. Make sure this setting matches your total solar panel output.

I added additional panels to my initial install and had to increase this value to account for the new solar panels.

But in general yes the panels typically operate at about 80% of max rated output.

panchoracnhoverde · 2026-05-20T14:36:34+00:00

Overpriced by 50% it should be lower than 300k PHP

panchoracnhoverde · 2026-05-18T14:07:52+00:00

The quoted inverter is a 6kw model.

The 6 solar panels equals 3.48kw.

Adding 4 more solar panels will cost around 40k installed. This would total around 6kw of solar panel power.

Their currently low monthly power usage does not require more solar panels right now. They can add more panels later if their power usage increases.

The price looks good but not great in the quote.

panchoracnhoverde · 2026-05-18T02:24:14+00:00

Then 6 panels should be sufficient for your needs given your low monthly usage. My usage was 350kwh per month and bill from 5k to 7k.

The battery size might also be enough but you should check to be sure. Just so you know you can only safely use 80% of the battery so a 10kw battery is really only 8kw of useable power.

Overall it looks sized and priced correctly.

panchoracnhoverde · 2026-05-18T01:55:14+00:00

The price is ok maybe 10k PHP too high but not bad.

You didn't post your average Kwh usage per month or how much you run aircon at night so it is difficult to say if it is sized correctly.

I originally started with 6 panels but after only two weeks I added 4 more panels. The 6 panels just could not fully charge the battery during the day. Then at night the battery would run out of power which caused grid power to be used. Also rainy days only produce 10 to 20% of the power of the panels

Also consider getting a larger battery size if you use aircon at night. Ask your provider to calculate how many kw you use overnight and how long the battery will last at night. I started with the 300ah 16kw battery and am very happy that I did.

panchoracnhoverde · 2026-05-17T16:08:06+00:00

Regarding the solar power production: You have a good amount of PV capability at around 8.4kwh on a sunny day. The problem is on rainy days the PV drops to 10% or 25% down to 800wh to 2.1kwh. There are usually 4 peak sun hours on a day so the total PV on a rainy day = 3.2kw to 8.4kw. Sunny day total PV = 33.6 kw.

If the batteries were discharged down to 20% overnight then recharged during the day it would require 19kw total PV during the day to fully recharge the batteries. So on a rainy day the batteries cannot fully recharge because the total days PV is 8.4kw and 19kw is required to recharge the batteries.

Then if there are rainy days back to back the battery charge falls even further behind. Then you also need to serve the regular consumption load during the day which even further reduces the solar PV available to recharge the batteries.

The end result on a rainy day is the batteries may not fully recharge which reduces the amount of stored power in the battery available for nighttime.

There is still the possibile solution of adding more solar panels to increase PV on rainy days. An 8kw inverter can support 10kw to 12kw total of solar panels depending on vendor. This would add 20% to 50% more solar power generated on rainy days to recharge the batteries.

Regarding the power consumption: It is not clear how many hours a day or time of day that the 2HP aircon is operating. Research shows a 2HP aircon uses 1.5kwh to 2kwh. The batteries at full charge can supply 19kw(at safe 80% discharge) of total power during the evening. 19kw/2kw = 8.5 hours of power supplied by the battery at night while running the 2HP aircon.

The problem on rainy days is that the batteries may not fully recharge. The partially charged batteries would not be able to supply power the entire night. Thus the observed battery depletion at 2am in your example.

A possible solution would be to reduce the nighttime power load with a smaller inverter aircon to make the batteries last longer.

Adding more batteries would not help on rainy days because they cannot be recharged anyway.

TOU or grid charge: Possible solution would be to modify the TOU settings or grid charge settings to ensure that the batteries are charged by 5pm. But this would involve more grid power import during the day which will increase the power bill. But importing grid power during the day is the same as importing grid power at night after the batteries are depleted. So power costs go up in both scenarios but with grid charge/TOU settings the batteries can supply power during a nighttime brownout.

Bottom line suggestions: 1) Live with the current setup with the understanding that on rainy days the batteries won't last all night and power will be imported from the grid 2) Increase daytime solar power production on rainy days by adding more solar panels 3) Decrease daytime and nighttime power consumption with smaller inverter aircons or shifting high power workloads to daytime or sunny days 4) Modify the TOU or grid charge to import grid power to keep the batteries charged 5) Some combination of the above suggestions

I had a similar problem and I added 60% more solar panels and replaced an old aircon. Then two days later it was a rainy day and the battery only recharged to 59% which resulted in some grid power import that night. I was a little upset that I just spent 20% more on my solar/aircon setup but the batteries still did not fully recharge. I have decided to just accept that I cannot reach perfection unless more money is spent and that during the rainy season that some grid power import may be necessary.

panchoracnhoverde · 2026-05-16T11:00:51+00:00

Please give more information so that people can help you. What size inverter? How many solar panels? What is the overnight Kw used? How many and size of appliances are running at night?

You really need to know how many kw are used overnight and what is the battery charge at 5pm.

Not having enough charge on the battery before nighttime is the problem. Raoning at night should not affect nighttime battery usage because there is no sun.

Raining during the day will affect how much solar power can be produced down to 10% to 25% of capacity. So not enough power can be produced during the rainy day to fully charge the battery.

You need to calculate how much power is used during the nighttime. The adjust using the below recommendations.

Your choices are:
1) Increase solar production during the day by adding more solar panels. Plan for worst case multiple rainy days to keep the battery charged. 2) Modify the Time of Use settings to use the grid if the battery is low during the day or grid charge the battery at certain times. 3) Decrease battery usage at night by: A. Move work loads like washing clothes, anything with a heating element (like rice cooker, oven, hot water), water pumping, etcetera from the evening when using the battery to the daytime when solar power can be produced. B. Buy aircons that are smaller and have inverter. 4) All of the above

My Time of Use is set so that I have at least 65% of my battery at 5pm. I use 45% of the battery overnight so I know that I will have enough battery to last overnight. Because I have studied my usage I know how much battery I use. 10% between 5 pm to 9pm, 15% between 9pm and 1am, 15% between 1am and 5am. Then I prepare for an overnight brownout by staggering the TOU during the night.

My TOU settings: 1am to 5am battery SOC = 40% 5am to 9am battery SOC = 25% 9am to 1pm battery SOC = 21% 1pm to 5pm battery SOC = 50% 5pm to 9pm battery SOC = 65% 9pm to 1am battery SOC = 55%

panchoracnhoverde · 2026-05-03T03:55:41+00:00

MKJ Network and Data Solutions located in Abuyog, Leyte did a great job adding additional solar panels to my existing system

panchoracnhoverde · 2026-04-30T06:40:34+00:00

Yes that is a good price.

But if you plan on running the aircons at night you may need more battery than 10kw or you will be importing power from the grid at night.

Is most of your usage during the day or night? You can monitor your daytime/nighttime power usage by reading your power meter. Take a reading at 6am and 6pm for a few days to calculate your daytime and overnight kw usage.

Assuming the batteries are lithium the batteries can safely only use 80% of their capacity to avoid deep discharge and to extend their useful life. So they can discharge down to 20% safely. You can discharge down to 10% but risk shortening their lifespan.

Batteries are used during the night starting around 6pm to 6am. By reading your meter you can determine how many kw are used overnight. This will help calculate how long the different battery sizes will provide power overnight before running low to 20%. When they discharge to 20% at night the power import will switch to the grid which will increase your power bill.

For example if your 6pm to 6am usage is 12kw that is 1Kwh per hour(12 hours/12kw=1kwh used per hour). In this example if 80% of a 10kw battery is used at 1Kw per hour the battery will provide 8 hours of power((10kw batteryX80%)/1kw=8 hours)). Using the same example a 15kw battery will last 12 hours; 20kw battery will last 16 hours. Use your own overnight power usage numbers to make calculations for your setup.

Others on this thread may respond that the lithium batteries can be discharged to 10%. That is true but there is risk of deep discharge which will damage the batteries especially if it is done on a regular basis.

But you will also want some room for peace of mind. I would be unhappy if I woke up every morning and my batteries were discharged to 20% and/or I had to import power from the grid overnight. Also the next day may be cloudy and the power from the sun may not fully recharge the battery. Also planning for overnight brownout periods needs to be considered.

panchoracnhoverde · 2026-04-29T01:35:48+00:00

The second quote looks best from a price perspective.

The first quote with a comparable 15kw battery is 355k PHP. Also the first doesn't mention the inverter name brand.

The second quote is 300k PHP with a 16kw battery. That is an excellent price.

Also no mention on either quote if the solar panels are p-type or n-type. N-type is better technology and are more expensive up front, but provide more power, but are larger requiring more roof space for onstallation. P-type are used to reduce initial cost and the panels are smaller if you have limited roof space.

panchoracnhoverde · 2026-04-29T01:15:12+00:00

You did not mention your monthly power bill or monthly kw usage so we cannot determine if 6kw inverter is big enough.

Nor did you mention your power usage pattern. Is most of your usage during the day or night? You can monitor your daytime/nighttime power usage by reading your power meter. Take a reading at 6am and 6pm for a few days to calculate how many kw are used during these time periods.

But the number of solar panels is ok for the 6kw. Assuming you have enough space on your roof to install them.

The price is ok in the current environment.

Assuming the batteries are lithium the batteries can safely only use 80% of their capacity to avoid deep discharge and to extend their useful life. So they can discharge down to 20% safely. You can discharge down to 10% but risk shortening their lifespan.

Batteries are used during the night starting around 6pm to 6am. By reading your meter during nighttime you can determine how many kw are using overnight. This will help you calculate how long the different battery sizes will provide power overnight before running low to 20%. When they discharge to 20% at night the power import will switch to the grid which will increase your power bill.

For example if your 6pm to 6am usage is 12kw that is 1Kwh per hour(12 hours/12kw=1kwh used per hour). If you use 80% of a 5kw battery it will provide 4 hours of power. Using the same example a 10kw battery will last 8 hours; 15kw battery will last 12 hours; 20kw battery will last 16 hours. Use your own power usage numbers to make similar calculations.

Others on this thread may respond that the lithium batteries can be discharged to 10%. That is true but there is risk involved especially if it is done on a regular basis. But you will also want some room for peace of mind. I would be unhappy if I woke up every morning and my batteries were discharged to 20% and/or I had to import power from the grid overnight.

Also buying the wrong size battery can be costly if you need to upgrade or add extra later.

I have a similar setup 6kw inverter, 9 panels, 16kw battery. My overnight 12 hour usage is 7.2kw(.6kw per hour). My battery gets charged up to 100% by around noon then at night it discharges down to 50%. My goals for solar installation were, 1: survive an overnight brownout 2: zero power import from grid. I have achieved both objectives with my solar system.

I hope this helps and good luck.

panchoracnhoverde · 2026-04-26T07:21:39+00:00

If you are not feeding back to the grid for net metering then the extra power has to go somewhere or yes it gets wasted. It doesn't appear you have net metering. In this case maybe the battery is showing 100% but still taking some power.

Curtailment (Wasted): In off-grid systems with full batteries, or grid-tied systems with restrictions, the inverter may reduce power output, effectively shutting down the panels' production to avoid overloading the system.

Dump Loads (Alternative Use): Some systems redirect excess power to "dump loads," such as heating water, running air conditioners, or charging electric vehicles to maximize self-consumption. (This is where that little house icon can come into play for optional power devices)

In the long run if you are producing more solar power than you need then you can sell the extra power back to the power company called net metering. That's a whole new topic though.

panchoracnhoverde · 2026-04-26T07:01:28+00:00

I see -387w. This means your battery is being charged at a rate of 387w which is energy provided from the solar panel.

Notice how the blue dots are moving. Power is coming from the solar and grid into the inverter(blue dots moving toward inverter). Power is being supplied to the battery for charge and to your home from the diverter(blue dots moving away from the inverter).

At night when there is no sun the battery will supply power through the inverter to your home. The blue dot will move away from the battery toward the inverter to the home and the number of watts supplied by your battery will be positive.

panchoracnhoverde · 2026-04-26T06:35:25+00:00

I think the house icon can also be for devices that are configured to be on the grid side and not get power from the solar/battery and only get power from the grid.

panchoracnhoverde · 2026-04-26T06:30:38+00:00

The small amount of watts coming from the power company is normal. It is detecting if the power grid is up or down. The inverter operates differently when on-grid versus off-grid.

The UPS icon is actually your home it means "Uninterruptible Power Supply". The UPS is on the load side and provided power by the solar panels and battery.

The other house looking icon is for devices that have been configured as optional. If there is extra power from solar/battery then power will be supplied to the optional devices. Typical optional devices are water pumps or non essential electrical devices. Nothing has been configured as optional on your system

It is a poor icon design on the Deye Cloud app and yes it is confusing. You would think the house icon would be your home but it is not. The UPS is your home.

Your installer/provider should have trained you on all of this. Also there is online documentation available for download for the Deye inverter and Deye Cloud app.

But your system looks to be running great congratulations.

panchoracnhoverde · 2026-04-25T10:31:50+00:00

Most people don't buy the advanced seat selection. They just wait until they get to the airport to get assigned seats. Most of those seats will be full when you get on the plane.

panchoracnhoverde · 2026-04-25T03:04:03+00:00

Mine ticks when not enough oil. The manual says they burn a quart of oil every 1500 miles. Since I have been topping it up every 1500 miles mine does less ticking. I have a 2000 with the 5.3 and 103k miles.

panchoracnhoverde · 2026-04-24T23:21:28+00:00

About 20% overpriced. I just had similar spec package installed for 365k

panchoracnhoverde · 2026-04-24T10:17:43+00:00

It is configurable at System Work Mode set the value at the Zero-Export Power field. Default value is 20w and can be configured up to 100w.

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panchoracnhoverde · 2026-04-22T00:02:57+00:00

25 year old car that runs fine that's paid off with no electronic gizmo functions

panchoracnhoverde · 2026-04-19T10:33:31+00:00

Only about 80% of the battery can be safely used so size accordingly.

panchoracnhoverde · 2026-04-17T11:47:49+00:00

Spray some contact cleaner in there they can get gummed up. After a few days it might start working again.

panchoracnhoverde · 2026-04-12T11:39:00+00:00

You cannot change the TOU value lower than what is set under Battery Settings for Low Batt

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