Wind electronic bring you the very best of power supply generator is fuelless generator with 1 year guarantee it can run for 24 hour non stop no fuel no oil just start it and enjoy your self 6kva 80,000Adewumi and Adelekan; BJAST, 15(6): 1-7, 2016; Article no.BJAST.23160 5 Table 1. Output efficiency for fuelless power generator Trials Load (W) Input voltage (V) Output voltage (V) Input current (A) Output current (A) Input power (W) Output power (W) Efficiency 1 0 12.662 225 0 0 0 0 0 2 100 12.6 218 7.34 0.378 92.48 82.41 89.096 3 200 12.65 200.8 7.794 0.42 98.59 84.3 85.524 4 300 12.804 188 7.07 0.396 90.514 74.238 81.996 5 400 12.748 153.6 8.16 0.484 104.026 74.308 71.51 6 500 12.716 144.6 7.8 0.436 99.184 62.936 63.406 7 600 12.474 131 6.748 0.362 84.176 47.496 56.432 8 700 12.6 92.948 5.282 0.296 66.558 27.454 41.196 9 800 12.376 42.92 4.552 0.238 56.368 10.194 18.222 10 900 12.344 27.264 3.532 0.212 43.67 5.766 13.384 11 1000 11.68 28.24 2.3 0.13 26.922 3.638 13.578 Source: Own Research means that both of the devices convert direct current to alternating current. Table 2 showed the result for performance of 1KVA power inverter system. The result revealed the relationship between voltage and current at both input and output level of the machine. The input power is usually higher than the output power of the device as shown in chart below (Fig. 1). The principle of the higher the load, the lower the voltage output which was also confirmed by [3] was also showed in Fig. 4. The efficiency of the inverter decreases with increase in the input load of the generating set. Therefore to operate the inverter more efficiently, the maximum loading of the machine must be below 800 watts. From the result obtained, it can be deduced that the highest efficiency recorded is at 96.3% which is more higher than that of the fuelless power generating set which is at 89.1%, at a load of 100W respectively. It was also observed that there is a decrease in the output of the generator when the load increases. 3.3 Comparison of Fuelless Power Generating Set and Power Inverter System The comparison between the constructed fuel-less power generating set and power inverter system are shown in Fig. 5. It can be clearly showed from the result of the performance evaluation of both fuel-less power generating set and power inverter system that in terms of performance efficiency, the power inverter system is still much better than the constructed fuel-less generator based on some certain conditions that the alternator and d c motor used for the construction were not specially made for the machine and mechanical loose in fuel-less power generating set is more than that of power inverter. Table 1 reported that the highest efficiency of fuel-less power generating set was 89.1% at 100W and Table 2 reported that the peak efficiency for power inverter was 96.3% at same