H2O activity, contents of phenolic compds. and vitamin C as well as caloric value of pomace of 3 Polish apple varieties after drying by various methods at temp. 23-55 degrees C as well as before drying were detd. to assess the suitability of the waste for food and energy applications. The drying resulted in reducing the contents of phenolic compds. and ascorbic acid (depending on the method of drying and the type of pomace) by 2-25% and 2-45% resp. The freeze drying caused the highest decrease of water activity in the tested wastes. The caloric value of the pomace was high and comparable to the heating values of typical energy plants.