First we need to measure and quantify how much electric power we use. Power is the rate at which energy is used or work is done. Some units of measure for electric power include horsepower, watts, kilowatts, or megawatts.
Power is typically measured using a meter or a monitor. In realtime or over time. Utilities typically use a 30 day billing cycle to collect and bill for kWhr energy used. This tends to make it difficult to track specific energy use around the home and even creates a disconnect between cost and usage.
Research shows that over 40% of residential (houses, mobile homes, and apartments) energy use is wasted. So it isn't surprising that by providing feedback using a real time kWhr energy monitor there is a potential to capture and eliminate more than 30% of this wasted energy.
The majority of wasted energy falls into the following categories:
A. Heating/cooling of un-occupied rooms (13%)
B. Overheating/cooling due to temperature variations (3%)
C. Leakage/standby power (2.5%)
D. Appliance choice (15%)
These can be controlled and monitored by using a combination of the following:
A. Programmable thermostats
B. Zone heating/cooling
C. Appliance monitors
Waiting until the energy bill is delivered is typically too late to allow for a consumer to react. Real-time in-home feedback can help the consumer minimize their energy usage.
Real-time monitoring provides a window into what is happening in our homes and can answer questions like:
How do we know if our refrigerator is using more than it should?
How much can we save by unplugging the 2nd refrigerator?
Does the old freezer have a hole in it?
Is the well water pump working properly?
Is there something running that we can't hear?
Is it time to have the HVAC checked?
What is it costing to run that portable electric heater?
What is it costing to run the dehumidifier or humidifier?
How much was saved switching to CFL bulbs or turning the lights out?
Many many more...
Next we will look at specific energy monitors and the installation of these devices.
The energy usage in a typical home falls into these eight categories. Space heating and or water heating energy might be from gas or electric. Reducing energy usage can be accomplished by targeting one or more of these areas for conservation and energy efficiency measures. To start with you should track and measure your energy usage.