How Do You Merge Multiple Power Sources, including Grid, Genset, Solar, Micro-Hydro & Batteries

The “electric power” in the Philippines is a mixed bag with years of stupid rules, graft, corruption and officials who simply do not care… unless they stand to make a few pesos.
The old cities have 220v 60hz split-phase power (110/110)… much like the 220 in the USA. The newer cities and rural areas typically have 240v 60hz single phase / multiple grounds. For economy of breakers and wiring, this “240v 60hz single phase / multiple grounds” is the best option in the world IMHO.
My power at the farm is 247v and is on a co-op transformer… and if everyone on the co-op does not pay their electric… they cut the whole co-op off. So I am going to have to buy my own 15kw transformer that connects to grid voltage.
Thanks for the info on Selectronic, I will continue to read more about them and then contract them for more information.
Cheers,
Ronny