[DB]

Ya, many of the "specs" are based on 1000 watts/m^2 of light... And then at 25C panel temperature... Right...

I previously found 800 watts/m^2 as being more typical, perfect conditions, and then forgot about it...

The Shell Solar Cell documentation claims:

1000 watts/m^2 in,
175 watts electricity out (with optimum load for maximum power transfer)
and 13.3% efficiency.

That so doesn't compute... The 13.3% and 175 watts don't jive.

Not my area at all. Just did a fast Google search on Shell solar cells...

[Cboldt]

That so doesn't compute... The 13.3% and 175 watts don't jive.

The 13.3% probably takes into account efficiency over a range of input power (light) levels, not just the efficiency represented at the peak power input/output level.

I'd look to IEC 61215 and related industry standards to find the definition of mu (efficiency).