solar mode is better and cheaper because when you install solar mode of electricity in your house you dont need to think of light being taking, you are now the controler of your light. That is the reason why it is better, but the reason why it is cheaper is that in a full 1year 10% of 100% of what you paid is not giving to you. In this case do you think power holding system of electricity is cheaper? No it's not rather costly
It may sound pretty cool but to me that question really sounds like to live a luxury life and poverty Stricken life which is better and more cheaper,I believe you know the answer to that but to fulfill all righteousness I would say solar power is better cos you don't have to worry about electricity not being available to you when you need it but in terms of installing and maintenance it's more expensive than power holding who can just decide not to give you light for a week and bring it just 4 2 hours a day and you get quite a little bill if you know how to manage your appliances and make sure your meter is being read everytime you are given a new bill.