Efficiency increased

SCHAFFHAUSEN (April 30, 2006) --- Within the framework of the development of the Stirling Energy Module (SEM) an important milestone was reached. Under laboratory conditions an average electrical efficiency of 20.9% was proven and certified by means of a neutral expert opinion.

Stirling Systems Ltd. can thereby further extend its leading role in the development of highly efficient combined heat and power (CHP) units bringing it closer to Stirling Systems' explained objective to prepare the break through of CHP units on a broad scale.