Cheers. It appears to me that Proven have "lost the plot" hopefully only temporarily. We have applications stalled in Aberdeenshire for lack of credible noise data. Also operational installations who haven't been able to get parts or service. And for example the only contact I have made at Proven is interested only in "Wind Crofting", not in supply for our own installation. Even their web site is falling apart with specification links pointing to non-existent pages.

They need to pull their finger out.

Regarding the rating, I think that's a bit of a side issue, at least for us. The price of a Proven "15" is roughly comparable to other 10 or 11kW rated machines, so you could see the 15kW maximum as a bonus.
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aesmith