Hi Richard,Same, Same but different.The Hybrid unit is a 48V unit which also runs off mains power at times of poor sunlight, hence the name Hybrid. I have this unit in my Office which is used during the day. 48V is much more suited to solar and as it's an inverter system is more efficient than a standard 240V system running off solar.However,In reality, if you have a decent Solar system and want AC during the day then a good quality split is better value.The Hybrids are perfect for small busines ...