A 5 MeV FEL facility has been realized at the ENEA Research Center in Frascati, Italy. This facility is devoted to the testing of Cerenkov FEL devices and other compact FEL configurations. Power up to 50 W in 4 microsecond(s) pulse has been generated in a Cerenkov FEL at wavelengths ranging from 0.8 to 1.6 mm using different dielectric guides. Other planned activities include the testing of short-period undulators in a small size waveguide FEL designed to operate in the sub-millimeter region. Operating characteristics and predicted performance are presented.