Use the methane and solar to fuel the facility. Capture the emission and reuse them in fertilizer as well. Have the facility be a one-stop-shop, which produces the feed from hydroponics. The VR for a cow is not going to be that difficult. Just project fields in front of them. The treadmill can just have bearings and not require power. If anything they can be used to generate it.
Use the methane and solar to fuel the facility. Capture the emission and reuse them in fertilizer as well. Have the facility be a one-stop-shop, which produces the feed from hydroponics. The VR for a cow is not going to be that difficult. Just project fields in front of them. The treadmill can just have bearings and not require power. If anything they can be used to generate it.