Comments of chapter undefined of Bringing Life to the Wasteland! (Old)

If 1 mutfruit tree is 1 energy for 10 seconds then it is 6 energy for 1 minute or 360 energy for one hour from ONE mutfruit tree. The mc has 6-8 at the moment I think? Also while grass give only 0,01 for 10 seconds if we combine all the grass volume from the 3 colonies it would be around a couple km in volume which is a lot more than 6-8 mutfruit trees. Realistically it should be somewhere around 8540 energy for 1 hour instead of just 89. The only explanation for 89 would be if the mc has to spend 8451 in a hour daily but for what?