I'm working on a project outside the US, in the Middle East, and curtain wall consultant has chosen a glazing from a European manufacturer who has provided their equivalent to the Solar Heat Gain Coefficient (SHGC) rating per the EN 410 standard: their's is the Shading Coefficient (SC).

My understanding is that this standard is more stringent than the NFRC version referenced by ASHREA, and more appropriate since NFRC is for windows, but curtain walls specifically.

Having reviewed the USGBC/GBCI Global ACP documentation I saw a provision to accept an alternate standard:
"Compliance with the mandatory provisions (Sections 5.4, 6.4, 7.4, 8.4, 9.4 and 10.4) in Standard 90.1-2007 (with errata but without addenda) or USGBC approved equivalent."

Does anyone know if the EN 410 is one such standard for complying to the Mandatory provisions in Section 5.4 of ASHRAE 90.1-2007?

I have also checked CIR's but only found 1 related: https://www.usgbc.org/leedinterpretations/LISearch.aspx?liaccessid=5042

I have also posted this question to GBCI but their turnaround, if experience serves me, is about 2 week (in good times). Hope I can get a faster response here.

Thanks in advance.