While there are many possible approaches to answering this question, I am focused on creating utilities as a public commons. Utilities, such as Broadband Internet and electricity are for the most part, extractive in nature, whereas putting up your own solar panels, or creating community owned Internet infrastructure is regenerative, and helps to build a circular economy.
Creating one’s own electricity/power can be an expensive investment to begin with, but can save money in the longrun. Having community businesses, of which some or all income generated goes into running the community and keeping costs down can help lower the amount each individual must pay. Another option is to have both buy-in options and rental options, that way people of varying economic abilities can all participate.
Many indirectly identified approaches being natural materials used to build dwellings; noth excluding dirt, mud, grasses. I wouldn’t doubt being Natives/Tribes willing to help teach such achievabilities. Noth only sol[ar], wind/aqua turbines (spiral pillar/tower being mine suggestion) are also within such sources. These systems are almost always expensive because of the kits premade; instead, yi could find electromagnetic motors in various sizes for the turbine power kits and build yiz’ own systems; they utilize the same controller boxes & battery configurations. Montana would be a huge benefitor to the turbine system. If you’re going to lease a renewable resource system, yi[z] might as well be connected to the grid. If yi[z] want reliable internet accesses, we needeth to fight harder for better accesses - whilst we slowly surpass Gigabits/second & the transeption equipment utilize TerraFlops/second… Natural water filtrations are amongst these too, as they essentially renew themselves & are more reusable than “conventional/common” aqua filters. I’m also against charging others utilizing renewable resources, even if accessing yours; there are other parameters that can be considered - at the same time, I don’t see maintenance being an expense when utilizing simple systems. Regardless of the battery bank/system, bakingsoda is a neutralizer - also if wet.