I would also expect this model to be common in the developed world. In the developing world, without our expensive power transmission network, the Fusion power block will likely be distributed, though still likely with several blocks sited together for ease of maintenance and supervision. If you think about it, they would still be attended (to prevent theft of valuable copper parts if for no other reason).

The power would then still travel by a local distrbution network to the end users homes and businesses.

Certain, cheap fusion power would be a massive boon to the developing world. Making life better, allowing heating and cooking without stripping forests for wood and making new economic opportunities available. (pumping water for irrigation, etc). Some of the best foreign aid to deveoping countries could be providing them with fusion power blocks and training in their operation and maintenance.

BUT…no technology short of fantasy will help the third world unless the third world deals with it’s population increase issues. For countries already overpopulated to have population growth rates of 4% (doubling in about 18 years!!!) is unsupportable for even another lifetime.