Over 600 Customers ww are using HANA on POWER currently!
A large number of them are already reference customers like currently mentioned VEKA, other ones in the German speaking environment (D-A-CH) are e.g. BOSCH and COOP with large HANA on POWER installations.
If you need more information please contact us via PN, e.g. me:
Jochen Ziegler, jochen.ziegler@de.ibm.com