Your choice of thread subject line suggest your intended community would have a Christian focus. Would you care to elaborate on how this would differ from other Christian focused communities that no longer form sustainable groups
The mennonites and Amish are perhaps best known for being a theology directed community. Even so within these groups there is a wealth of diversiy and schisms that have led to the division of the originaal founding colony. Sadly some of these divisions have led to heartbreak and strife even within families.
What lesson can be learned from past experience? Obviously a basic desire to succeed is not sufficient. Nor is it a case of the members simply losing faith either in their theology or the basic goals of the founding community.
The list of communities that did not survive beoynd one generation from the beginning is so long I lost count. I am seriously wondering if it might be easier to start with an existing and viable community, then converting them to the idea of going off grid. This in contrast to beginning a community from scratch focused on going off-grid from the get go.