The estimated total chromospheric, transition region and coronal losse
s for a flare observed on the eclipsing binary SZ Psc with the Interna
tional Ultraviolet Explorer satellite on 6 July 1990 is of the order o
f 4.5 10(36) ergs. This estimate is similar to that derived by Doyle e
t al. (1989) for an ultraviolet flare on another RS CVn star, II Peg,
and is a substantial fraction of the total amount that is possible to
store on these stars without having to evoke the presence of kiloGauss
fields.