Thermoelectric power generation is a direct consequence of the Seebeck effect. The Seebeck effect is a device that converts heat into electrical energy due to difference in temperature between two dissimilar conductors and produces voltage. The Seebeck effect is the generation of an open circuit voltage (no load is connected) across a junction made or dissimilar material due to a temperature difference across this junction. They consists of one pair of p-type and n-type thermoelectric elements . (to perform such conversion) . The main focus of this paper is when four TEGs are connected in series combination and in parallel combination ,the input and output voltages, output current can be measured at different temperatures , and the corresponding graphs can be drawn . We can also calculate the power generated by the formula , P=IV .The measurements were done with the help of thermoelectric generators (TEP1 -1264 -1.5) and a measurement setup consists of controlled hotplate , a controlled fan. Thermistor is used for measuring temperature. At load resistance , R= 10â„¦ when four TEGs are connected in parallel , the maximum output current drawn at temperature 1800 C is 0.4 A and the output voltage is 5.1V. In this case the output power calculated is P = I V = 2.04 W and the corresponding graphs are drawn between Temperature vs the output voltage , temperature vs output current, output current vs output voltage . When four TEGs are connected in series , the maximum current drawn at temperature 1600C is 0.63A and the output voltage is 20.5V . In this case the output power generated is , P=IV= 12.3W and the corresponding graphs are drawn between temperature vs output voltage, temperature vs output current , output current vs output voltage.