Use the sliders to calculate your estimated kWh usage and cost. Do you know your bulb Wattage or general Watt total use ? Use the chart below to estimate Watts based on your current type and number of bulbs.
Type of Light |
Incandescent |
Halogen |
CFL |
LED |
 |
 |
 |
 |
|
Wattage |
60W |
42W |
13-16W |
5-9W |
Example; 10 x 60W incandescent bulbs = 600W – set the first slider to 600W, etc.
Default; 1 x 60W incandescent bulb
Customer rate of $0.129 per kWh, rate varies per region and utility provider.
About Kilowatt Hours
The difference between watts (W), kilowatts (kW), and kilowatt-hours (kWh).
Watts
Unit of electrical power equal to 1 joule per second. Light bulbs are rated in watts to indicate how much energy they consume.
A 60W incandescent bulb typically gives off around 650-800 lumens. Watts are a measure of how much energy the light bulb will use as it produces light. Lumens are the measure of how much light the bulb produces.
Type of Light |
Incandescent |
Halogen |
CFL |
LED |
|
|
|
|
|
Wattage |
60W |
42W |
13-16W |
5-9W |
Lumens per watt (LPW) |
13 |
18.5 |
60 |
75-100+ |
What is a kilowatt (kW)?
Kilowatts are a measure of how much energy something consumes.
Watts (W) to kilowatts (kW): 1kW is equal to 1,000W.
To convert W to kW, divide the total wattage by 1,000.
Ten 100W light bulbs is equal 1kW of energy usage.
10 bulbs x 100W = 1,000W
1,000W / 1,000 = 1kW
Your energy usage depends on how long you keep everything on.
What is a kilowatt-hour (kWh)?
kWh is the unit of measurement that quantifies how much energy is used over a period of time, calculated by multiplying the kW of energy consumption by the total number of hours the lighting has been operated.
Ten 100W light bulbs.
10 bulbs X 100W = 1,000W or 1kW of lighting
10 hours of daily use X 30 days in the month = 300 hours of use
1kW X 300 hours of use = 300kWh of energy consumption
A significant portion of your electricity bill is based on your energy consumption in kilowatt-hours.
Questions ? CONTACt MiEBS
