@ChuckMcManis - the Choctaw don't own most of the land over which they have jurisdiction, and I can't quickly find out how much land they do own. So far they seem to be doing solar on a smaller scale:
The Choctaw Nation Solar Farm in Durant, Oklahoma sits on 35 acres of land and contains more than 15,300 solar panels. It's a partnership with Oklahoma Gas & Electric (OG&E), which constructed and operates the facility.
The farm first came online in August 2020 producing 5 megawatts, and expanded it to 10 megawatts by the end of 2021. Many Choctaw Nation facilities — including tribal government, culture, and health centers — receive a portion of their power from the farm, with each of the 58 connected facilities using solar for up to half of their total power.
The Nation saved $69,000 on energy costs in the first 90 days after the farm went online. The tribe also avoided price spikes during the devastating February 2021 winter storm because half their power consumption came from solar.
The utility authority director has mentioned the longer-term possibility of the Choctaw Nation moving into energy production itself, though that was described as still far off.