Schematic of Thermoelectric Generator (image) Cell Press Share Print E-Mail Caption This is a schematic of a thermoelectric generator that harnesses temperature differences to produce renewable electricity without active heat input. Credit Aaswath Raman Usage Restrictions Credit Required. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.