Those long showers are nice but there costing you extra money. One other thing that could cause a problem would be a bad breaker or loose connections at the breaker. Depending on what part of the country you live in, heating and cooling are the largest contributors to most household energy bills and are the best places you can look to save money. After making sure your home is well insulated, make sure your heating and cooling systems are running efficiently and central systems are checked annually. To keep equipment running efficiently, keep heating and cooling air ducts clean and outdoor equipment free from dirt and other debris.
Most electric meters are clockface, which means they use clockfaces instead of actual numbers.
There are usually five clocks. Reading the clock faces from left to right, note the number the hand is pointing to. If the hand is between two numbers, note the lower number. Than your meter read is 12,345 KWh.