At present, autonomous wireless sensor network (WSN) components are extensively powered up using batteries. Due to limitations in batteries, it incurs huge maintenance cost and for remote and inaccessible areas battery replacement is simply impossible. To overcome this issue, an integrated Energy Harvester (EH) is proposed and developed here. Solar based EH has been identified as the most viable source of energy to be harvested for WSN components. Moreover, a novel chemical based EH is reported as the potential secondary source for harvesting energy because of its uninterrupted availability....