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Old 03-04-2015, 11:57   #46
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Re: Is there interest in bi-facial high wattage panels?

I too am putting solar up soon, and would be interested in either purchasing at cost or trialing them with the given that I would keep track of their performance in the cruising world. I think we get too much sun, and would put them directly over the cockpit and on the radar arch, were they would get a ton of reflective radiation in addition to the direct sunlight.
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Old 03-04-2015, 13:35   #47
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Re: Is there interest in bi-facial high wattage panels?

Jb,

As you can see there is certainly demand, with most boats being limited by space availability first, then cost, anything that can increase the power production per sqft is going to have an edge, almost regardless of cost. But you really need to do some testing side by side (literly) with a competitors panels to see how much additional power you will get the way boat owners will install them.

In place of a Bimini I am sure you will get less 'boost' but if it's still 10% more it may be worth it, on an arch or davit it could by 20-30% who knows. But even a little additional PROVEN production could be valuable.
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Old 03-04-2015, 16:58   #48
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Re: Is there interest in bi-facial high wattage panels?

Yep. Enough said. It is, as the poster above stated, clear that there is interest.

Now the question to the OP: where can these panels be purchased in retail (few cruisers can buy truckloads, except for some cat owners).

If the size is right, and if they go fine with a plain MPPT regualtor, I can test one in the real world too: say sailing it from Europe to West Indies and back.

I have full monitoring gizmodo gear onboard and the data can be logged to a file for further use by the maker and by the CF.

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Old 03-04-2015, 23:46   #49
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Re: Is there interest in bi-facial high wattage panels?

jbpatents

Are they functionally different from these:

Sunpreme Maxima GxB360 360W Double-Glass Frameless Bifacial Solar Panel

Still wide but may be more attractive for some and seem readily available.
Are the larger panels going to be available from resellers like this one?
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Old 04-04-2015, 01:46   #50
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Re: Is there interest in bi-facial high wattage panels?

Bcboomer, these are our regular panels. Functionally the GxB300SL are the same, except that they are lighter since we use thinner glass for the SL (if you haven't guest the creative engineering naming SL = super light). I'm not sure whether Civic Solar ordered any SL from us, but using Civic Solar to fullfilling matine-bound orders may be one option. I greatly appreciate all the comments and interest. I do like the idea of integrating them onto a solid bimini, since it's similar to our car port installations. We did build some smaller panels during product development (just to save on cells) so I'm going to check whether we have any small glass left or if I can get a slot for a small run at the factory. Right now we are fullfilling orders at 10,000 panels per month so factory is fully utilized. Any effort on this is more of my personal interest then anything.

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Old 04-04-2015, 10:46   #51
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Re: Is there interest in bi-facial high wattage panels?

JB,

If you can get 15% extra from a bimmini installation think about a stern arch like below. A lot of people are using these, and I am guessing the production would be even higher.
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Old 04-04-2015, 11:33   #52
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Re: Is there interest in bi-facial high wattage panels?

I don't think I want that much weight that high. My boat is already tender enough for the admiral.

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Old 04-04-2015, 12:27   #53
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Re: Is there interest in bi-facial high wattage panels?

Since these are bifacial with glass on front and back, someone asked how heavy they are. Since weight is an issue on any boat (especially aloft) I figured watts/lb might be an appropriate ratio to compare the Sunpreme panels to the Sunpower panels.

Price/watt might also be a good factor to consider, but he hasn't mentioned price yet.
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Old 04-04-2015, 20:15   #54
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Re: Is there interest in bi-facial high wattage panels?

Socaldmax I have mentioned both price and weight in previous posts. Also, bcboomer posted a link to our standard panels sold by Civic Solar. The MxB360 sold by Civic Solar provides more power than our MxB300SL, but they are appreciably heavier. The MxB300SL is about 19kg, which is the same as Sunpower E19/320 panels. Sunpower are top quality panels, but they are expensive and can't have bi-facial since they use back contact cell technology. I will check whether we can work something out with Civic Solar so that you can buy our panels from them. Note however that our panels don't have frame. It's an advantage for residential and power plants since they don't need grounding. For marine application the creative guys on the board will have to come up with mounting ideas. I'll upload a picture showing the standard mounting.

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Old 04-04-2015, 20:27   #55
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Re: Is there interest in bi-facial high wattage panels?

jbpatents. The 500 watt panels are still the ones I am most interested in. Especially an SL version. Any chance of a reseller?
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Old 04-04-2015, 20:36   #56
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Re: Is there interest in bi-facial high wattage panels?

bcboomer, the 500W is still undergoing certification by third party. We will not begin production until it is fully certified. Also, I doubt we'll do an SL version of these. So these are probably good for cats on the davits, but not sure about monohulls - except for large ones.
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Old 04-04-2015, 20:39   #57
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Re: Is there interest in bi-facial high wattage panels?

Here's a close-up picture of a ground mount.
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Old 04-04-2015, 20:48   #58
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Re: Is there interest in bi-facial high wattage panels?

Ok. I'll have to have a closer look at what is available and see if I can make the smaller panels fit. Too bad because the big ones are a natural fit.

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Old 06-04-2015, 18:48   #59
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Re: Is there interest in bi-facial high wattage panels?

I have checked our warehouse in California. I have some Glass-glass panels that I can sell for 75c/W if anyone is interested. These are NOT bi-facial and are rated 200W. Also, I have some MxB290SL. These are bi-facial and I can offer those at $1.20/W. These are in Sunnyvale and I'm not set up for individual shipment. I'm working to see if I can work something with a distributor, but that would be different price. If you want any of these and can pick up, let me know.

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Old 07-04-2015, 01:42   #60
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Re: Is there interest in bi-facial high wattage panels?

I'll try and check the specs but, if they are a size I can use, I'm interested in the MxB290SL.
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