Advice on shading an inverter

My solar contractor is wrapping up the install of a 6.21 kW system. Since space inside my house is limited and the garage is detached, they installed the inverter on the west-facing wall next to the power meter. I am in Portland, OR so the inverter will get direct sun during the late afternoon. They are now being told by the Energy Trust of Oregon that they must shade the inverter or move it inside the house.

A picture of the inverter:

http://imgur.com/a/kw2yq

Their solution is to put a little "roof" over the inverter. It's not a design that I find very attractive:

http://imgur.com/a/5Jnou

I came across this solution, which could work. However, I suspect that it's no longer manufactured (and is specific to an older inverter model). 

http://evolvedenergy.bigcartel.com/product/sunny-shade-sb

Does anyone have good ideas? The inverter is a Sunny Boy 7.0 if that makes a difference. I'm pretty sure the 7.0 has more than enough power to handle the needs of the array since they originally were going to provide a 5.0 (I don't fully understand why they ended up installing a 7.0 instead of 5.0). 

I do like the idea of fabricating something out of outdoor-grade sheet metal that bolts onto the inverter in some fashion to provide shade. But, I'm not sure how expensive this would get. A pre-existing solution would probably be more palatable to the contractor.