Did this just happen no generators?

[Frank Castros]

Renewable sources, while having orders of magnitude greater energy content than human society may use up, are not particularly easy to harness, allowing only a small part to be finally harvestable. There are tough technical, environmental and societal problems, all quite significant, that have to be solved and restrictions on its transmission and location of usage have to be followed. It will also require development of “wastetless technology” and recovery and recycle of materials, particularly those which are difficult to win from natural sources and may be in short supply. Thus, in the long run, “renewable energy” will become inevitable, but even this will require a great deal of effort and planning and will not come easy.

Or inexpensively.