# Understanding Home Energy Use

Did you groan the last time you opened your electric bill? Sometimes our energy use gets away from us and we have no idea how much electricity we’ve used until the bill comes due. It is possible to avoid this unwelcome surprise. Making sense of how your home uses energy is vital to getting a handle on how much you spend each month on your utility bill.

## Determine Your Usage and How Much It's Costing You

Everything in your home that uses electricity requires a certain amount of power measured in watts. Your electric bill is based on the number of kilowatt-hours (kwh) that are used each month.

1 kilowatt hour = 1 kilowatt of electricity used for 1 hour
1 kilowatt = 1000 watts

1. Multiply the power an electric appliance uses by the amount of time it runs.
For example, a lamp with a 60 watt light bulb, left on for 120 hours a month (4 hours a day), has used 7200 watt-hours. 7200 watt-hours = 7.2 kWh.
(60 watts x 120 hours = 7200 watt-hours or 7.2 kWh)
2. Multiply the kWh by the cost per kWh and you can see how much you spent running that light all month. JEA’s current kWh charge is 11 cents per kWh, which includes all city fees and taxes.
So, that light bulb costs 79 cents to operate.
(7.2 kWh x 11 cents = 79 cents)

The higher the power (watts) or the longer the run time (hours), the higher your utility bill will be (and cash out of your pocket).

## Where Does the Energy Go?

As you can see in the pie chart, most energy use goes to heating or cooling the home. Water heating is usually next followed by appliances and lighting. Finally, home electronics and other large equipment such as pool pumps and heaters, spas, well pumps and compressors have an impact. Depending upon size and run time of electronics and other equipment, they can add up to a significant part of monthly energy use.

## Energy Consumption for a Typical Single Family Home*

• Heating & Cooling: 46%
• Water Heater: 14%
• Appliances: 13%
• Lighting: 12%
• Other: 11%
• Electronics: 4%