Yes, starting from TIMES v4.1.0, using cross-price elasticities is now possible by defining CES functions for the commodities involved in the substitution, just like in Markal-Micro.
Documentation has been submitted to the ETSAP OA, but I guess they have decided not to make it public. But you could try and contact the ETSAP support for it.
Documentation has been submitted to the ETSAP OA, but I guess they have decided not to make it public. But you could try and contact the ETSAP support for it.