This paper reviews current trends in the technological design of electrical pulsed power generators of the 1 TW class. Using published data, design criteria for SIDONIX II, OWL II, KALIF and GAMBLE IIA are compared using a lumped circuit parameter. More precise predictions of machine performance are made with the GOST transmission line code. Code results show agreement to within 15% of the published experimental parameters. Electric stress limitations to power output are assessed for 1 TW level machines using empirical formulae and a finite element solution of Laplace's equation. The analysis is then used to study economic means of increasing output power so as to provide a multimodule approach to inertial confinement fusion at the 100 TW level.