dan eka unit ekaknin kiyak profitda machan ?
Kalin wadi kara eken eka alluwe nadda ethakota ?
oya lost eka unit ekakin lost wena eka witharak nemeyi neda ? ethakota anith ewa nawathwalada dan.
What I would think is remove the fixed amount and calculate the average cost per unit and multiply that by number of units and calculate the bill. Then we all are paying for what we all are using.
And change unit price for every month depending on Hydro, Coal or Diesel or Solar usage.