I would guess that the hurricanes are the reason it's so reliable? Old, aging power infrastructure gets blown away/broken and gets replaced. This happens all at once in big events when it's expected, so no one bats an eye.
Elsewhere it would sit there, slowly degrading until it fails peacemeal.
It looks like an open source project. Makes a hell of a lot more sense to implement using that than rolling your own? If it's missing something you need, write it for them.
Writing your own implementation is extremely unlikely to differentiate your app/product. There is a spec, either you implement it and it works, or you don't and it doesn't. Using a maintained library is by far the better option.
Focus your time on the product you are building not the tech.
They stop being effective. At 50% if there is another supplier they will be cheaper and get picked. If you set it to 100% or 200% it doesn't make much of a difference. Trade just stops between the countries unless there is only a single supplier for what you need.
Faf?