Estimating Power Load
In order to design your alternative energy system, we need to determine your estimated electrical needs. Please fill out the worksheet below. First enter in the quantity.  For example, normally you would have one boiler, so you would enter a quantity of 1.  However, you probably have a number of different light bulbs, so enter their quantity.  Next, enter the number of minutes the appliance/equipment will be used per day.  Then enter in the amount of watts each appliance/equipment uses per hour (usually listed on the manufacturer's label).  If an appliance is rated in amps, just multiply the amps by the operating voltage (120 or 240) to find watts. The default wattage listed for the equipment (some browsers may not show) are only an example.  Make sure you change this value to match your specific equipment's wattage. 

When planning to purchase appliances and equipment, it is best to choose items with the best energy rating.  You can compare Energy Star compliant ratings by going to the Energy Star web site. There you will find ratings on many different brands of equipment. Natural Resources Canada also has a website dedicated to helping consumers make wise, energy conscious decisions. Stoves, ovens, clothes dryers, and water heaters should always be either propane or gas. Dual fuel appliances are not recommended.

The size and cost of any renewable energy system will depends on a number of factors: u The amount of power required (in watts).  v The amount of time the power is required (in minutes/hours). w The amount of sun hours available at your location.  x The amount of wind available at your location.