Any Solar panels powerful enough to power a 27000 BTU System 3 air conditioner

My utility bills is killing & I reckon it's the air conditioner
& water heater at my home.

Anyone has come across any solar panel or diesel powered
generators that could support a 27000 BTU Panasonic aircons?

What about this item at amazon below, would it help?
(at least power my water heater & refrigerators) :
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sunhuxAuthor Commented:
In my tropical country, the temperature at night in the bedroom
is around 29 Celsius (can reach 31 C during very warm months).

I'm used to turn my room's aircon to 24 C to be able to sleep.
At 25 C, I can't sleep due to eczema etc

Would a bed fan below help?
Probably not a single panel... you would need an array of ten or so 200+W panels and an inverter.  You need the nameplate data like voltage, amperage and horsepower, not just the BTU output, to size an array and inverter just to run the AC unit.

I prefer SMA's Sunny Day and Sunny Boy inverters, myself...

There are *many* reliable PV panel manufacturers... like Kyocera, Mitsubishi, Samsung, et al, which you can be fairly certain will still be around in 20 to 30 years to honor their warranties if they don't last. I would try to source both components locally, for lower shipping costs (don't forget there's a difference between "price" and "cost").
sunhuxAuthor Commented:
Just curious, would those panels store electricity power so that they
can be used at night?  In the day, the sun is very hot at my country but
at night & on rainy days, there's no sun.  Does the inverter play this role?

Referring to your last sentence, price = the $ that the suppliers sell while
cost = shipping cost,  maintenance / repair cost (ie has to ship them
overseas for repair)
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for storing electricity, you'll need batteries.
best contact a solar panel company for a complete solution - then you'll have an idea of the involved devices and parts, + price; so you can better decide what to choose
Batteries add cost and complexity to solar systems. Besides an inverter, you would also need a charger and charge controller... for off-grid systems, those components are usually built into the inverter - SMA calls their off-grid units Sunny Island, and typically run on four 12V batteries in series (for 48VDC). Since you're not in the USA, I would suggest the Schneider XW6048-230-50 if you're determined to go with batteries.

But if you're already tied-in to a reliable power grid, it's nearly always better to buy a grid-tied inverter (inverters make AC from DC; converters make DC from AC), which typically run the electric meter backwards when you're generating more than you're using... especially when you consider your main concern is running the air conditioner, whose peak needs often coincide with peak PV generation.

If you have an electric water heater, a timer will usually pay for itself in less than a year.
e.g. I run one of these an hour per night and it makes enough hot water for 2 showers and dish washing every day. You could set one like that to only heat water between say, noon and 2pm, so the only time it heats water is during peak PV output.

Also, if you told us exactly what country you're in, possibly we could better tailor our answers to your location.

Still, better insulation and sealing against air infiltration/exfiltration is more cost-effective than private energy generation up to about R-66 levels... that holds true no matter where in the world you are (well, unless you happen to own property with year-round running water that has 20 to 30 feet / 6m to 9m of head... but even then if you use less you could sell the excess to someone else).

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sunhuxAuthor Commented:
Thanks a lot.

I'm in Republic of Singapore (an island in South East Asia)
Key to reducing load requirements on an alternative system like a generator, solar system, etc. is to reduce consumption.

If you have the sunlight, use it for hot water.  You can setup a two-tank system so you can use minimal energy at night to top up the hot water temperature.  A recirculation system will reduce wasted water and bring hot water to the user without introducing cold water into the hot tank (if a user turns on the tap for 2-3 minutes to get hot water to the tap).

For people, increasing airflow can increase tolerance to high temperature.  Instead of cooling to 74F, you can cool to 78-80F and provide fan circulation.  Ceiling fans for large rooms, or spot fans for small rooms or beds.

If you have heat-generating equipment or activities, exhaust the air instead of trying to recycle & cool it.  If the ambient air outside is 90F, that is easier to cool than 110F from computer equipment, or even higher temps from cooking.

If you can't insulate the walls in existing construction, you can reduce sun's heating effects on the outside walls/roof with natural shade (trees, bushes), solar shade fabric (awnings, sails), or by lattice work.

After you spend a few hundred dollars on all of that, you may not need to spend thousands of dollars on a generator, fuel storage, and electrical system upgrades like wiring and a transfer switch.
Off-white or pastel colors may be more effective.  I'd think that white would reflect a lot back into nearby windows or adjacent materials...possibly increasing the temperature there.

Solacoat numbers show their "cream" to have better stats than "white".

agreed it is better ...0.02 %
> If you have the sunlight, use it for hot water.

Oh, yes... absolutely - Solar Hot Water (SHW) panels are more cost-effective and a less-complicated system (even if you implement a drain-back system to guard against freezing and night-time radiation losses, and a 2-tank system to preheat water before using electricity or gas to bring to final temp) than using PV panels to make electricity to heat water with resistance elements.

Here's a good resource for do-it-yourselfers -
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