## solar system

Expand Messages
• Something strange here...1 sq m solar panel puts out about 150W of power. 300 sq ft is about 30 sq m, with a total output on a good day of 1500 W. That s
Message 1 of 13 , Apr 18, 2014
Something strange here...1 sq m solar panel puts out about 150W of power. 300 sq ft is about 30 sq m, with a total output on a good day of 1500 W. That's 12A @ 120V--can't build a house on that...

[Non-text portions of this message have been removed]
• Probably my husband’s estimates are off - he was guessing. We’ve beeb assured that the 18 panels we have will give us more than enough power. Paula
Message 2 of 13 , Apr 19, 2014
Probably my husband’s estimates are off - he was guessing. We’ve beeb assured that the 18 panels we have will give us more than enough power.

Paula
• John, It seems that your calculation is off a bit. If you have 30 sq. m. the output should be 4500 watts, or 37.5 amps at 120 volts. Here s a link to a pretty
Message 3 of 13 , Apr 19, 2014
John,

It seems that your calculation is off a bit. If you have 30 sq. m. the
output should be 4500 watts, or 37.5 amps at 120 volts. Here's a link to
a pretty good sizing calculator that lets you plug in all of your own
numbers. http://www.freesunpower.com/system_sizing.php

Jim

--
Jim Cottone
Professional PC Repairs
https://singbiker.net

[Non-text portions of this message have been removed]
• Maybe you re using new Math ;) ???? 30 X 150 = 4500 but that still seems a pretty small amount for building. Jim M. [Non-text portions of this message
Message 4 of 13 , Apr 19, 2014
Maybe you're using "new Math" ;) ???? 30 X 150 = 4500 but that still seems a pretty small amount
for building.
Jim M.

[Non-text portions of this message have been removed]
• How much power do you need to build a house? Depends. I built an off grid house with a 1000 watt generator once. We all had the biggest Milwaukee cordless
Message 5 of 13 , Apr 19, 2014
How much power do you need to build a house?

Depends. I built an off grid house with a 1000 watt generator once. We
all had the biggest Milwaukee cordless tools at the time. So the power
was used to charge tools and to run our swamp cooler once we were closed in.
We could also run a small compressor ( not at the same time as the swamp
cooler ).

Anyway, here in Costa Rica it seems to be the biggest "power tool" is
the concrete mixer. So that's just a 1/2 HP motor.

But I think the most
important thing in this particular case is that the solar panels are
grid tied -- so the builders can draw as much current as they want
at any one time. Not like with a generator or a battery bases PV system.
So as long as the overall power used is less than the power generated
they are good.
• You guys are all talking about how much power you need to “build” a house. My house is already built and I was talking about how much power I’m going to
Message 6 of 13 , Apr 20, 2014
You guys are all talking about how much power you need to “build” a house. My house is already built and I was talking about how much power I’m going to use once I live there. I doubt that while building the house our workers used anywhere near as much power as what you are talking about. It’s just as two-bedroom house - not a palace!

Paula
• No one here saying how much it cost up front?/ And how many years it will take to recope the cost?? So who can tell me/us how much you paid for this here in
Message 7 of 13 , Apr 20, 2014
No one here saying how much it cost up front?/ And how many years it will take to recope the cost?? So who can tell me/us how much you paid for this here in CR??

[Non-text portions of this message have been removed]
• Prices have come down a great deal so what we paid for our solar system really has no relation to what you will be paying. You’ll need to price it out
Message 8 of 13 , Apr 21, 2014
Prices have come down a great deal so what we paid for our solar system really has no relation to what you will be paying. You’ll need to price it out yourself.

Paula
• Paula, I did price it out, Thank you. It takes roughly 9,2 years at the break even at the current rate. Prices vary 10K on upwards to 37K depending on the
Message 9 of 13 , Apr 21, 2014
Paula, I did price it out, Thank you. It takes roughly 9,2 years at the break even at the current rate. Prices vary 10K on upwards to 37K depending on the amount KWH you need. Plus ICE figure 3 month or more for the connection plus a fee for that Humm!. Does not seem like something I want to invest in at these prices .

[Non-text portions of this message have been removed]
• I, also would like to hear a figure, even a ballpark figure!!!!! [Non-text portions of this message have been removed]
Message 10 of 13 , Apr 21, 2014
I, also would like to hear a figure, even a ballpark figure!!!!!

[Non-text portions of this message have been removed]
• 400 [Non-text portions of this message have been removed]
Message 11 of 13 , Apr 22, 2014
400

[Non-text portions of this message have been removed]
• I just read a comment from a reader in response to Intel leaving. He said that his electricity bill has gone up 300% in the last 6 years with little change in
Message 12 of 13 , Apr 24, 2014
I just read a comment from a reader in response to Intel leaving. He said
that his electricity bill has gone up 300% in the last 6 years with little
change in lifestyle. When I build my home in Atenas, I will absolutely
cover my roof in solar panels and hook up to the grid. A 9 year payback
seems rather high from what I have read, but even so that means that the
next 11-16 years your electricity will be essentially free! I plan to spend
the rest of my life in CR so it would be a wise investment for me
regardless.

--

*What we do in life, echoes in eternity. (Maximus in Gladiator)*

[Non-text portions of this message have been removed]
• Tim, When you are going to build your house, do not forget to add some sort of insulation for your roof. Most roof here in Costa Rica are acting as pizza
Message 13 of 13 , Apr 24, 2014
Tim,

When you are going to build your house, do not forget to add some sort of insulation for your roof. Most roof here in Costa Rica are acting as pizza ovens!

Once done, solar will make more sense.

Roger Pilon, Editor
The Planet Fixer Digest

[Non-text portions of this message have been removed]
Your message has been successfully submitted and would be delivered to recipients shortly.