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Energy independence gives you more control over you life and reduces the ability of others to influence how you live.
98 Energy Expectations
Will I be able to have as much power as I do now being connected to the utility company?
Only if you have pockets deep enough to purchase large quantities of photovoltaic modules (solar panels) and batteries. When using solar energy you are actually the power company. The amount of power you will have access to depends on how many solar panels and batteries you have as well as the amount of sunlight you receive on average throughout the year. One thing that we constantly run up against is an installation
that does not have enough photovoltaic modules to do the job. Many people
expect more out of their photovoltaic array than it can deliver. I have seen many
websites as well as listings on a popular auction site that describe how many
kilo-watt hours of power their modules or systems will produce each month.
Please do the math before you purchase alternative energy equipment.
Most importantly - DON'T FOOL YOURSELF - be realistic and you won't be
Remember, an alternative energy system is like a bank account - you can't
take out more than you put in.
Your lifestyle will undergo some changes. You will not have a seemingly unlimited supply of energy like you do with the utility company. You will have to make it a habit, if you have not already, to turn off lights and appliances when no one is using them. And no more gazing into the refrigerator until your nose becomes numb.
Solar air and water heaters being made today are very efficient. The major limiting factor is surface area available for the solar collectors and amount of sunshine your site receives. Also, the better insulated and sealed a building is, the smaller the collectors need to be. As far as heating with electricity, with one exception, don't bother. Electric heating (resistance heating) consumes so much power that it is impractical. The only way to utilize solar electricity for heat is to use a diversion type of solar charge controller (which keeps from overcharging the batteries) between the solar panels and the batteries. Once the batteries are charged, the excess power can be sent to an air or water heating element. For space heating we would also suggest either a gas furnace or if you like chopping wood, a wood burning stove. Some wood stoves can also heat a limited amount of water. When using a gas fired water heater we would recommend the tankless type. Within their limitations, they are an excellent choice. We have been using one since 1985. Alternative energy can be used to power the blower in a furnace. This has become quite common in areas where storms regularly knock out power in the winter. As long you have fuel and enough electricity you can run the blower and can keep warm.
For cookstoves we recommend gas. An electric stove draws just too much power and is wasteful of energy. Most stoves today come with two sets of gas jets, one set for natural gas and another for propane. Please use the proper setup for the kind of gas your are using. Propane has a much higher Btu content (more heat for a given volume) than natural gas. Many of the pilotless stoves made today use a great deal of electricity to operate. As an exception to the non-electric rule, many people use microwave ovens powered by alternative energy sources. The run times of the ovens is usually so short that they start to make sense.
Fans and ventilation are well suited to being powered by solar panels. The brighter the sun is, the more power you will have. Air conditioning is out as it uses a large amount of energy to run the compressor pump. In areas of low humidity, solar powered swamp (evaporative) coolers work very well. Building design will also be an aid in cooling.
It can, but with some limitations. There are excellent and highly efficient refrigerators being made that can be used off-grid. Sun Frost makes a line of superb refrigerators, refrigerator/freezers and freezers that run on low voltage direct current. These are of a superior design but they will consume a sizeable portion of your electricity production. Please click onto their website here http://sunfrost.com for specifications and further information. If you insist on an electric refrigerator or freezer, this is a much better way (depending on the distance from the battery bank) than using a conventional a.c. powered unit on an inverter. Another option would be to use a propane powered model. Please weigh the options as either option represents a significant amount of money.
The most energy efficient type of lighting would be fluorescent light fixtures. This is true whether they are powered directly off the batteries or from a d.c. to a.c. inverter. When using low voltage direct current there is a wide selection of lighting options available. Please click onto 8 Low Voltage DC Lights.
There are washer conversion kits for operating conventional washing machines on low voltage d.c. Staber produces a horizontal tub washer that can be run off an modified sine-wave inverter without voiding the warranty, it is extremely efficient and uses very little water or energy. If you are set up using an inverter, the major manufacturers are introducing horizontal tub washers which use an amazingly small amount of water, detergent or electricity. I have no experience with them but the Maytag has received many accolades. As for drying your clothes, you can use a gas dryer or the old fashioned clothes line and let the sun do the work directly.
http://staber.com link to Staber for more information
Where can photovoltaic modules (solar panels) be used?
Photovoltaic modules can be used just about anywhere in the world. Some areas are better than others. This is dependant on the amount of sunlight available throughout the year. Some limiting factors are: surrounding objects that can cast shadows on your panels or environmental conditions such as overcast conditions or long term incliment weather. When in doubt, just Contact Us
Solar space and water heating systems can start out small and be expanded as the needs and pocket book grow. However of these systems can be difficult to expand. On the other hand, photovoltaic systems can be easily expanded and are very versatile.
Many of these are available in 12 volt d.c. versions. Ones that are not can be powered by a d.c. to a.c. inverter.
Whether it is pumping water from a well or providing water pressure in your home, alternative energy is an excellent choice.
I have no experience with wind powered generators but have gleaned a few bits of information over the years. Electricity production by windmills is very dependant on the AVERAGE wind speed THROUGHOUT THE YEAR. Just because you have a lot of wind does not mean that there will be a useful amount of electricity produced on a regular basis. My suggestion (and please consider the source and lack of experience) would be to rent or buy a recording windspeed indicator. Many people have spent a lot of money on wind mills, the unit itself as well as the tower and balance of system components, only to find that power production is insignificant. In the neighborhood where I grew up are two wind turbines, one is roof mounted across the street from a heavily wooded park. The other is on a mast (from a distance this appears to be 12" pipe) in a residential area. Both of these systems are more show than anything else. Know what your average wind speed and duration is. Understand how nearby hills, trees, buildings, structures and other windmills can affect your site's wind potential. There are excellent books out there on the subject - knowledge is power. Many of the guidelines dealing with solar power are also applicable with wind power.
As in wind power generation, I have no experience in hydro electric, but let's see what little I do know. Some things to consider when planning a hydro-electric system are: do you have a fast enough flow as well as a high enough volume in your stream, creek or river to justify the investment in equipment? Does your flowing water source freeze in the winter, overflow in the spring while turning to soup or does it dry up in the summer. The type of water flow will help to determine the generator type. A horizontal flow may dictate a different type of unit than if you have vertical fall like in a diverted stream at an elevated level or under a water fall. Floating, as well as submerged, debris can also be a deciding factor in your choice of equipment. Many of the guidelines dealing with solar power are also applicable to hydro-electric power.
How does the cost of alternative energy compare to that provided by the utility company?
Up front it usually costs much more. In the long run however it is quite competetive in terms of not having utility bills as well as the cost to our environment. However, if you now live, or are planning to live off the power grid, there is something you should consider. Utility companies can charge $10.00 to 30.00 per foot or more (depending on location and topography) to bring the power lines to you. This makes the investment in alternative energy equipment much easier to accept, and no electric bill in the mail each month.
Going outside every morning and looking at your own private power plant gives one a feeling that is hard to describe. Our large array has been producing electricity since 1988. Some of the panels in the array were purchased used and were producing electricity before we got them. Since we live on the grid I will tell you our feelings, it is even stronger for those living off the grid. Much of our power is produced by a source that would otherwise be wasted. Our impact on the environment is less than that of our neighbors. We are taking responsibility for some of our energy needs. If the power goes out, due to storms, blackouts, natural or unnatural disasters as well as influences from around the world - we won't be left in the dark.
copyright by John Drake Services,Iinc.
Why be one of these?