Homes that are energy-efficient take advantage of the following
alternatives to traditional household loads (listed below), and enjoy
financial savings because of this.
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| Vermont Solar carries the following energy-saving alternatives to
traditional household loads: |
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| Refrigerators |
Conventional units consume 2-5 kWh/day, four to seven times as
much as the most energy efficient models. Efficient
electric refrigerators consume up to 80% less power. Propane
refrigerators are quite popular and relatively inexpensive to
operate. |
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| Lighting |
Compact fluorescent lighting
generates four times the amount of useable light as incandescent
lighting for the same amount of wattage, and they have an extremely
long lifetime! |
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| Clothes washing |
Energy-efficient washing machines are preferable. If a clothes
dryer is used, a gas model is much more efficient than an electric
model. To maximize efficiency at an off-grid house, commonly laundry
is done while the generator is charging or excess power is available
from the batteries (i.e. when the batteries are full in the middle
of a sunny day). |
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| Cooking |
Microwaves are acceptable in most cases, but a propane
range will probably be the method of choice. |
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| Water heating |
Renewable electricity can not economically be used to
generate electricity for electric water heating! Propane is the most
likely choice, perhaps in combination with an active
solar hot water system as backup. |
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| Space heating |
Renewable electricity can not economically be used to
generate electricity for electric space heating! Forced air
circulation systems, due to their high wattage blower, consume a lot
of power and are not all practical. It’s common to use wood
heat along with a few direct-vent propane heaters as backup. Passive
solar heat is an option. Radiant-floor heating systems, which use
relatively low power circulators, are compatible with residential solar
thermal (solar hot water) systems. |
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