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Old 07-04-2011, 08:57   #1
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Wind or Sun

Hello

I have a leopard 45 catamaran and I have a watermaker in it and a 6.5 kw genny to power this. Now when I run the genny to make water, I can also charge my batteries and run other equipment. I would like to also have another power system and was thinking of a wind generator or solar panels.

Any advice on this. It would be to make sure my batteries are always charging.

Thanks

Craig
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Old 07-04-2011, 09:10   #2
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Re: Wind or Sun

We use both on our boat so no matter what conditions we can charge without a noisy generator.

Wind, KISS windgen 400 W maximum output

Solar, 2-215 W panels

Now, if there's no wind and if it's been raining, I might vrank up the generator.
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Old 07-04-2011, 09:12   #3
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Re: Wind or Sun

For the amount of realestate you've got open, I'd go solar all the way. two large panels will fit nicely and cost less than the comparable wind gen instalation. Quiet too. I've got both and the solar is by far the bulk contributor on average.

PS by both, wind and solar, no room or want for a generator.
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Old 07-04-2011, 09:15   #4
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Re: Wind or Sun

craig42,

Solar is a great option and is silent and maintenance free.
I remove the geny a few months after we installed 2 SunPower 225 watt panels.

Makes plenty of silent power
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Old 07-04-2011, 09:27   #5
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Re: Wind or Sun

Quote:
Originally Posted by craig42 View Post
Hello

I have a leopard 45 catamaran and I have a watermaker in it and a 6.5 kw genny to power this. Now when I run the genny to make water, I can also charge my batteries and run other equipment. I would like to also have another power system and was thinking of a wind generator or solar panels.

Any advice on this. It would be to make sure my batteries are always charging.

Thanks

Craig
Craig, it's difficult to advise you on this without knowing your cruising grounds and/or cruising plans. What works at ten degrees north latitude is probably not going to be the best solution at 50 degrees north.
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Old 07-04-2011, 09:32   #6
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Re: Wind or Sun

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Craig, it's difficult to advise you on this without knowing your cruising grounds and/or cruising plans. What works at ten degrees north latitude is probably not going to be the best solution at 50 degrees north.
Good point, our solar was useless for a few weeks last winter. Where we're going the wind will work well, but so will the solar.
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Old 07-04-2011, 10:00   #7
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Re: Wind or Sun

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Good point, our solar was useless for a few weeks last winter.
If your solar was only useless for a few weeks, you had a better winter than we did. We've been anchoring out on weekends, mostly, and it seems that on at least half the weekends we've been out the majority of our charging has come through the wind generator rather than the solar panels.

I always chuckle when forum members who store their boats on the hard from October through April advocate a solar-only approach to keeping the banks charged. That would work for me too if I only sailed May through September. Ditto if I kept the boat in the tropics.
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Old 07-04-2011, 10:04   #8
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Re: Wind or Sun

So the general consensus is that in sunny territory, solar is preferred? That isn't a surprise to me really. I assume that most people have both solar and wind on their boat.
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Old 15-04-2011, 23:25   #9
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Re: Wind or Sun

We have 100w of solar and 400w of wind and no engine let alone generator. However we are a 28ft mono with energy efficient gear everywhere we could.
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Old 22-04-2011, 07:35   #10
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Am looking at getting a Silentwind generator by Spreco out of Europe. Seems to better made than most, and more and more of the Air X / Breeze owners are switching to their blades as more efficient and much quieter. Apparently Silentwind is AC converted at regulator to DC.
Any comments?
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Old 20-11-2011, 09:04   #11
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Re: Wind or Sun

Quote:
Originally Posted by Cotemar View Post
craig42,

Solar is a great option and is silent and maintenance free.
I remove the geny a few months after we installed 2 SunPower 225 watt panels.

Makes plenty of silent power

You have had a few years of experience withthe SunPower panels. I am looking at two of their E19 X 320 watt panels with an MPPT controller. How do you feel about the product?
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Old 20-11-2011, 18:54   #12
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Re: Wind or Sun

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Originally Posted by Cotemar View Post
craig42,

Solar is a great option and is silent and maintenance free.
I remove the geny a few months after we installed 2 SunPower 225 watt panels.

Makes plenty of silent power

Where did you buy the SunPower panels? The usual panel vendors don't list them and the company web site wants me to call an installer for a quote. No installers anywhere near here.
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Old 20-11-2011, 19:10   #13
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Re: Wind or Sun

We have 24 volt panels feeding into an MPPT controller for a 12 volt boat. This provides us with usable current even in very overcast days. Not much, but 2 or 3 amps/hours for 8 hours certainly helps keep things topped up.

On of our Reefing lines came loose and broke one of the blades of our AIR X. Put that out of commission for a while. It made me come to the realization that I REALLY like the solar panels a LOT more than the wind generator. I'll put the wind gen back up when we go cruising again, but meanwhile solar just keeps on delivering.
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Old 06-12-2011, 03:29   #14
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Re: Wind or Sun

The Silentwind is available in Australia, out of Sydney. The wesite is www.silentwind.com.au Also the blue whispering blades for replacement blades AIR X and Breeze which are very quiet.

Quote:
Originally Posted by davimack View Post
Am looking at getting a Silentwind generator by Spreco out of Europe. Seems to better made than most, and more and more of the Air X / Breeze owners are switching to their blades as more efficient and much quieter. Apparently Silentwind is AC converted at regulator to DC.
Any comments?
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Old 06-12-2011, 03:30   #15
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Re: Wind or Sun

The Silentwind is available in Australia out of Sydney. www.silentwind.com.au
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