As I wrote a week ago, the Ethiopian was to officially join the Star Alliance on December 13th and they did just that. Ethiopian is a good choice for Star. It opens up new connection options and destinations in the horn of Africa. Ethiopian complements the two other African based Star Alliance carriers, South African Airways and Egypt Air, very well.
You can already redeem on Ethiopian using other Star Alliance carriers programs, as the award inventory is loaded in to the system. Sometimes it is bit of a struggle first because not always the front line employees making the award reservations are aware of the newest members.
Had a quick look and United, US Airways, and Lufthansa had a chart for Ethiopian fare classes eligible for mileage credit. BMI, which if my favorite program to credit business class flights, haven’t published a chart yet. The elite qualifying miles earned on United for paid business class flights on Ethiopian looked rather low. You only earn 100% (125% redeemable miles though) when business class normally earns, depending on the program, up to 200%.
Lufthansa Miles and More chart for Ethiopian
United Airlines Mileage Plus chart for Ethiopian
US Airways Dividend Miles chart for Ethiopian