ENVIRONMENTAL CENTS: Backup Power Options
No one likes to lose power, but before buying a generator, it pays to weigh personal needs.
By Bruce Saller
COLUMNIST
Losing power for an extended period is not only inconvenient, but it can be costly if food must be discarded, and potentially deadly if you have a health condition. Many people are purchasing generators to reduce the impacts of power loss.
There are three types of generators that range in size from 1.5 Kilo-Watts (KW) to 20+ KW:
Small portable units: 2-3 KW, 40-50 lbs, $400-$600, two 120V outlets, only use gasoline
Larger portable units: 3.5-20 KW, > 150 lbs, have wheels and lift bar, $500-$5000, 120 V and 240 V outlets, can be single-fuel (gasoline), dual-fuel (gas/propane), tri-fuel (gasoline, propane, natural gas).
Permanent units: 14+ KW, $5000+, use propane or natural gas, typically no outlets
(The prices above are estimates for the generators only and do not include installation, labor, etc.)
The size you need depends upon the items you want to power. Here are some average power consumptions:
Low (5-20 Watts): LED Light, Phone charger, Wi-fi router
Medium (200-300W): Gaming devices, TV, Refrigerator, Washing Machine
High (1000-1500W): Microwave, Coffee Maker, Electric Griddle, Electric Stovetop, Dishwasher, Portable Heater
Very High (3000+ W): Oven, Water Heater, Dryer, AC, Heat Pump
So, if you want to power lights, chargers, wi-fi, one TV, one refrigerator, and are willing to only use one high power item at a time, you could get by with a 2-3 KW generator. If you want to power multiple high/very high items, you will need one in the 5–20 KW range.
If you only power a few 120 V items, you can get by using extension cords plugged into the generator. If you are powering your entire residence, you will need to install a transfer switch that connects either utility power or generator power to your circuit breaker panel. If you are not powering everything, you will need to install an additional circuit breaker panel for the generator powered items, as well as a transfer switch.
Generators are not very efficient and should only be run as required for maintenance and during power outages. A typical generator will use a gallon of gasoline to provide 5-6 KW hours of electricity. Assuming gas is $3 per gallon, this equates to 50-60 cents per KW Hour as compared to 10-11 cents per KW Hour from Dominion.
An alternative to using generators is to use an Electric Vehicle to power your house during an outage. Many EVs can connect to a transfer switch and power your home for several days. Using an EV saves the cost of purchasing and maintaining the generator and also saves 40-50 cents per KW hour by not using gasoline.
So, the cost to have backup power ranges from a few hundred dollars for a small generator and some extension cords to tens of thousands of dollars to power everything. Things to consider in making the choice include:
How often you lose power
Which items you need to power
The cost of spoiled items
How much you are willing to spend
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If you are going to buy a gasoline generator, use ONLY non-ethanol gasoline and use a gasoline treatment, such as Sta-Bil. The treatment will keep the gas from forming varnish in the carburetor. DO NOT use ethanol gas unless it is all you have. Ethanol gas will destroy the fuel system, if left in during storage. Even then, shut off the fuel valve and run the engine "dry" to store it.
Diesel system? Be sure to use diesel fuel treatment to keep it from "jelling" during storage.
What size generator do you need? Go through the house and make a list of what you must have and record how many watts it uses. Add them all together. Add another 15-20% for "surge" and there you have it.
You are not trying to go on as normal. You are trying to keep the pipes from freezing and survive the power outage. You need a refrigerator, freezer, water pump, a few lights, internet, maybe the microwave oven, furnace for heat, hot water heater (not really). You do not need, a TV, AC cooling, washer/dryer, desktop computers, space heaters, or electric kitchen stove.
You can selectively turn off items to get the power you need, if you find one item drawing more power than you thought it would (water pumps, furnace heaters, kitchen stove?).
YouTube is not your friend. If you do not know how to hook it up, get a pro, or you will burn your house down and/or electrocute yourself.