 there's only so much that you can be able to harvest it's not infinite obviously you and me know that you can only harness solar energy when the sun is up probably with the development of the technology of batteries you can store that but that has been a challenge because it can be very expensive when you you look at it like that our wind is intermittent because you have to have wind and it has to be a certain quality of wind not any kind of wind when you talk about safety