The market penetration of fusion-fission hybrid technology into a typical utility environment is presented. Key factors and trade-offs affecting the inclusion of a hybrid in utility planning as a generation alternative are addressed. Study results indicate that under certain conditions, a number of different types of hybrids can provide sufficient favorable economics in order to minimize the total revenue requirements of an electric utility and penetrate an electric utility system. This is predicated on a high growth rate of fission reactors coupled with high escalation of nuclear fuel cycle costs.