In this project, a new non-isolated high step up Quasi Z-source dc-dc converter with coupled inductor techniques is proposed, which is suitable for renewable applications. The main advantages of the proposed topology are continuous input current, common ground between load and input DC source, low normalized voltage stress on the semiconductors (switch/diodes) and low total voltage stress on devices compared to the conventional QZS converter. However, increasing the turn’s ratio value of the coupled inductor windings not only doesn’t limit the duty cycle but also leads to decrease the voltage stress on switch/diodes and increase the output voltage level. The operating performance of the proposed converter, theoretical analysis and comparison between the proposed converter and other published works (i.e. QZS converters) are provided. Finally, one prototype at 500W is built and tested which shows experimental results and theoretical analysis verify each other well.