Barring any problems, a water well is a very economical way to supply your home with water.
High electrical usage occurs when the system malfunctions. If there is a water leak somewhere, the pump could be running much more than normal. Another common problem is a water logged pressure tank. Normally, the pump runs, pushing water into the pressure tank against the air charge until a preset pressure is reached, at which time the pressure switch turns the pump off. This way the pump does not have to operate during the whole time you are using water, because you have the tank’s pressure to draw from. If the pressure tank has lost its air charge, it is said to be water logged.
Any of these problems can cause a higher than normal bill, not to mention the extra wear and tear on your well pump.