Environmental pollution associated with petroleum sources of energy has reinvigorated interest in the need to find "greener" electrical energy alternatives without a net carbon emission into the ecosystem to solve these problems. This research study analyzed electricity generation through bioelectrolytic reaction from an "irish-potato", pineapple and tomato as electrolyte for the vegetative batteries with Zn/Cu as electrode. Treatments were performed on samples. In the first treatment, vegetative samples were heated at varied temperatures (19.5-80°C) and at varied holding times (20-60min). In the second type, sample tissues were sandwiched between two aluminium plates through which pulses of ac current were passed at varied frequencies (2.63-100,000Hz) maintained at 312mV. With 108cm^3 of sample, the battery capacities in untreated state were: "irish-potato" 53.7mAh, "pineapple" 84.2mAh and "tomato" 80.4mAh; heat treated state: "irish-potato" 66.86mAh, "pineapple" 116.4mAh and "tomato" 108.8mAh; while in electro orated state: "irish-potato" 68.9mAh, "pineapple" 96.0mAh and "tomato" 105.67mAh. All these capacities were found experimentally to power a LED of forward current 1.44mA, resistance of 270Ω and supply voltage of 3V. Primary cost analyses showed that electro orated Zn/Cu vegetative battery samples generates portable energy of 5.74-50.54cts/Wh, which is 14-124 times more than the currently available dry cell (D-type) cells retailed at 7.14Ksh/Wh. Given that irish-potato is ranked fourth (after maize, wheat and rice) in the world and the second most important food crop after maize in Kenya in terms of abundance, it was recommended as an alternative vegetative battery.