Off grid power woodworkers

roblg3

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Apr 5, 2014
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751
Looking to move off grid but still make my furniture pieces.  Does anyone have any idea what is necessary power capacity wise?  I plan on making my own solar panels, hydro electric generator and hopefully converting my 1200 watt portable generator into a bio diesel unit. This is gonna be a MAJOR transition.  Any off grid help of any kind is appreciated!😉
 
I would think to continue doing woodworking off grid, cordless tools and hand tools would be ideal.  Then again if you can harness enough power from solar panels you may be able to power larger power tools.
 
Assessing my monthly kWh usage is where I should probably start. This may be too difficult?
 
I would think that you will need a Battery Storage Capacity for effective base load. Off or partial off grid is something that we too are considering.
 
Our home in Washington State is located on the shoreline of a reservoir that generates hydro power.  Our home is off grid however, 5 miles from the dam. We have 18 185W solar panels that are wired into 6 arrays, those 6 arrays are wired into 2 solar controllers which drop the voltage to 24V to charge a 2000 amp battery plant (12 2V 2000Amp 300# sealed Gel Cells).  The battery plant feeds into 2 4000W 110/220V inverters which then feed to our homes 200Amp panel.  The inverters are also battery chargers for the battery plant, charge comes from a 30KW diesel generator which in the sunny summer weather runs maybe once a week.  The only 220V requirement in the house is the well, we have mostly LED or fluorescent lighting in the house.  We also have a hydro power plant that is functional in the winter time, this is supplied by a stream that comes off of a small mountain south of our property, the water is collected in a tank below a culvert and routed 900' via a 3" pipe to a small hydro plant producing 48V and then reduced to 24V via a controller, this 24/7 plant does not produce as much as power as the solar in the summer and last winter we were running generator at least once a day to maintain charge to the batteries. I am mostly at this point only a hoarder of Festools, they were/are used most recently to build a garage/shop.  The inverters produce pure sine wave power and the Festools have not complained at all.  My present project is wiring the work shop, it is a 12 x 36' loft in the garage, wiring will include at least one 220V circuit to power bandsaw.  You could say all of the Festools are battery operated but I would not want to cart around the 9 300# 2V batteries that would power them up..... 
 
What sort of investment is that Wiley set-ups neighborhood?  if it's too private to ask, pardon me.
 
Hey Rob. 

I looked into this to supplement power as well as run as a partial house gen-set. It can be pricey but if you are looking at a serious off grid system, worth a look.
https://www.tesla.com/powerwall

Cheers. Bryan.

Sent from my iPhone using Tapatalk
 
The below picture is a solar power generator.  I built this generator to supply power to a residential home during construction last year.  It has 4 batteries, 8000 w converter, control switch, gauges and circuit backer, and 4-210 w solar panels.  As a member said, this ways 300#.  Challenging to move with a dolly but manageable.  I used 8020 as the skeleton and bolted 1/2" plywood inside and outside for a few reasons.  But basically, all of the guts to run power tools off a solar panel are inside the box with external plugs.  From demolition to framing during October to January, the system worked great.  The system failed once HVAC and plumbing began working.  They needed lights!  Which drained the batteries in 3 or 4 hours. 

Long story short.  Now days, the inverters are inexpensive for what they can provide.  The solar panels have come down drastically.  The solar panel mounts can be costly, but the expensive mounts that rotate will benefit in the long run by providing power throughout the entire day which would reduce number of batteries and panels.  The batteries are expensive so you need to invest in low voltage lighting and other power consuming appliances (coffee maker, ummmm!).

Bright side to a bare minimum solar power system, is that you can add to the system as needed.
 

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Check outhttp://www.pabiodieselsupply.com/ they have a lot of info on making your own bio diesel.  Its really easy to achieve great results with their products.  When I had my military truck I made all my own fuel with one of PA's Centrifuges.  I was able to run my truck on used motor oil and veggy oil with no issues.
 
I live off grid in the Scottish Highlands. Have been doing this for about 6 years now. I have 18 x250W solar PV panels on a ground mount which feed into a Grid Tie Inverter at the house. This converts the DC produced by the panels into AC 230V which backfeeds into the Island Grid in the house. This grid is supplied by a Victron Inverter charger (5kW). Any power not used is backfed through the Victron into a 48V battery (24x2V cells). I use a planer thicknesser and extractor in the workshop and this runs off the Victron. In addition I use hand tools like rotex, kapex with DC as well. There is plenty of power if the sun is shining. If its dull, I have a diesel generator which I will run for a while to top up the battery while I'm machining wood. In winter I need the gen to top up the battery every couple of days.

If you're going to use machinery, your inverter needs to be sized to be capable of supplying that demand. If you're not sure you can get smaller ones and double them up in need be. One as master and other(s) as slave. The Victron gives a pure sine wave, wheras cheaper inverters give a modifed sine wave which is not as clean a supply. ( Other inverters available such as Trace, Outback)

For living off grid, get rid of any resistive loads, such as heaters, cookers, water heaters. Use LED lights, wood or gas for heating, cooking etc. ( Having said that I do have some heaters... They are connected by relay through a Morningstar relay controller which switches them on as dump loads whenever the battery is full.)
 
Danpalon makes a plexiglass/polycarbonate structure that is built up like a cardboard panel. It is designed for roof and walls and is translucent.
This is more energy efficient than LEDs is the sun happens to be working.
 
Holmz said:
Danpalon makes a plexiglass/polycarbonate structure that is built up like a cardboard panel. It is designed for roof and walls and is translucent.
This is more energy efficient than LEDs is the sun happens to be working.

I have it in my house, but it is made of glass. We call it windows. They are so translucent, you can look through them to the outside. Its like looking through the walls.  [wink] But just like that Danpolon stuff they dont work when the sun is off  [sad].
 
The key difference is more for roofing systems as danpalon is a better insulator than a glass window. It does not make a lot sense unless one is totally off grid, but it's germane to the topic.
 
Thanks so much!  There's really solid workable solutions here [big grin]. Once again, the FOG community delivers.
 
Svar said:
Holmz said:
Danpalon makes a plexiglass/polycarbonate structure that is built up like a cardboard panel. It is designed for roof and walls and is translucent.
This is more energy efficient than LEDs is the sun happens to be working.

I have it in my house, but it is made of glass. We call it windows. They are so translucent, you can look through them to the outside. Its like looking through the walls.  [wink] But just like that Danpolon stuff they dont work when the sun is off  [sad].
. Cute.... Very Cute.... [doh] [doh] [doh] [poke]
 
leakyroof said:
Svar said:
Holmz said:
Danpalon makes a plexiglass/polycarbonate structure that is built up like a cardboard panel. It is designed for roof and walls and is translucent.
This is more energy efficient than LEDs is the sun happens to be working.

I have it in my house, but it is made of glass. We call it windows. They are so translucent, you can look through them to the outside. Its like looking through the walls.  [wink] But just like that Danpolon stuff they dont work when the sun is off  [sad].
. Cute.... Very Cute.... [doh] [doh] [doh] [poke]

Clearly
 
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