In
our Energy Section, we will
help you to
understand
new technologies
in energy efficiency. |
| If
you’re not building a new house, and therefore can’t work
with an architect to go green from foundation to rooftop,
and you’re not remodeling, you can nevertheless make changes
(some easy, some not) that will have a significant and positive
impact on planet Earth. |
|
|
| Solar |
 |
|
Solar power
is one of the first things that comes to most people's
minds when the subject of alternative energy comes up.
Solar power first gained wide public awareness during
the 1970's energy crisis, and while it may not be such
a hot topic these days, solar technology has made great
advances since then.
Using
solar for all or part of your home's electrical needs
makes sense. Grid-tied residential solar systems are
less expensive than ever and reduce the amount of electricity
you purchase from your local utility. Where net metering
programs are available, you may be able to sell excess
electricity to your utility. Your residential solar
system will produce reliable, clean power to reduce
the burning of fossil fuels and contributes to a healthier
environment. Solar electric systems are quiet, operate
automatically, require very little maintenance and need
no fuel except sunshine!
Installing
a PV system is also a capital improvement to your home
or business (and therefore exempt from sales tax). Unlike
other real property improvements, a residential solar
system generates electricity and thus an ongoing cash
flow, by directly reducing your electricity bills for
the next 25 or more years. The initial capital investments
and subsequent cash flow benefits make a home solar
system comparable to other long term, purely financial
investments.
There
are two great links to help you make some important
choices on how you will power your home. These two sites,
Department
of Energy, and Desire
USA will help you in learning more about the rewards
of choosing a renewable energy source and qualifying
for rebates that most homeowners do not know exist.
We are proud to be a dealer for www.sunwize.com,
a leader in the industry since the seventies. Let us
help you explore your free power options. |
| The
CT Consumer’s Guide to Buying a Solar Electric
System »
Guide
to Buying a Solar Electric System »
Solar
Energy-What's the Pay Back? »
Solar-Radiant
Floor Heating »
The
Solar Power System » |
|
|
 |
| Geo-Thermal,
Heating & Cooling |
 |
The
earth absorbs almost 50% of all solar energy and remains
a nearly constant temperature of 50°F to 70°F
depending on geographic location. Working with an
underground
loop system, a geothermal unit utilizes this constant
temperature to exchange energy between your home and
the earth as needed for heating and cooling. In winter,
water circulating inside a sealed loop absorbs heat
from the earth and carries
it to the unit. Here it is compressed to a higher
temperature and sent as warm air to your indoor system
for distribution throughout your home. In the summer,
the system reverses and expels heat from your home
to the cooler earth via the loop system. This heat
exchange process is not only natural, but is a truly
ingenious and highly efficient way to create a comfortable
climate in your home.
Care
for the Earth: Geothermal qualifies as renewable
energy - a typical two bedroom house-sized installation
is equivalent to taking two cars off the road or planting
one acre of trees. Work toward the preservation of
the environment by minimizing present environmental
problems like acid rain, air pollution, and the destruction
of the ozone layer.
Less
Foreign Oil: We can reduce our dependence
on foreign energy sources because geothermal systems
use far less of our natural resources. We must be
serious about the economics and future of foreign
oil. Geothermal is much more than a bumper sticker
solution to our energy crisis. It provides a serious
answer to an increasingly profound problem. America's
dependence on foreign oil has increased from 30 percent
in the 1970s to nearly 60 percent today. In September
2001, the same month that the terrorists attacked
the United States, we imported more than 1.2 million
barrels of oil a day from Iraq. Last year we paid
Iraq a record $4 billion for its oil.
We
can be a part of a solution by using less fossil fuels.
World energy consumption is expected to increase 40%
to 50% by the year 2010, and the global mix of fuels--renewable
(18%), nuclear (4%), and fossil (78%)--is projected
to remain substantially the same as today; thus global
carbon dioxide emissions would also increase 50% to
60%.
We
need cleaner air. Carbon emissions in North America
reached 1,760 million metric tons in 1998, a 38 percent
increase since 1970. They are expected to grow another
31 percent, to 2,314 million metric tons, by the year
2020. (U.S. Department of Energy).
Human
beings have used geothermal energy in North America
for at least 10,000 years. Paleo-Indians used hot
springs for cooking, for refuge and respite. Hot springs
were neutral zones where members of warring nations
would bathe together in peace. Native Americans have
a history with every major hot spring in the United
States.
|
|
|
|
 |
| |
| Wind |
 |
Small
wind-powered electric systems sized for homes, farms,
and small businesses as an industry has experienced
major growth in the past decade. These turbines, which
are defined as 100 kilowatts in capacity and below,
have seen their market expand significantly with growth
targets continuing at a 18-20% rate through 2010.
The U.S. is the leading world producer of small wind
turbines, the vast majority of which are manufactured
on U.S. soil. These machines are used by individuals
to lower their electric bills, become independent
of their electric grid, and to avoid the unpredictability
of traditional energy prices.
The
state of Connecticut allows municipalities the option
of offering property tax exemptions for certain renewable
energy systems including wind turbines. Adoption of
this exemption varies from one municipality to another.
The exemption, which applies to wind facilities that
begin operating on or after July 1, 1998 and are used
in residential applications, may apply for tax exemptions
up to the total value of the equipment. Contact your
local tax assessor's office for more information.
Wind
turbines are one of the oldest forms of renewable
energy use in the world. From medival wind mills that
milled grain, to traditional farm wind mills that
pumped water for livestock and irrigation, to the
modern alternator driven electric wind generator,
wind turbines have helped mankind for centuries.
With
good, consistent wind flow, wind energy is one of
the most economical forms of alternative energy available
today... If your wind flow fluctuates, wind turbines
can still be an excellent addition to a solar system,
providing more consistent year-round power.
Wind
turbines have been used for household electricity
generation in conjunction with battery storage over
many decades in remote areas, but increasingly, U.S.
consumers are choosing to purchase grid-connected
turbines in the 1 to 10 kilowatt range to power their
whole homes. Household generator units of more than
1 kW are now functioning in several countries, and
in every state in the U.S.
The
American Wind Energy Association (AWEA) has released
several studies on the small wind turbine market in
the U.S. and abroad, showing that the U.S. continues
to dominate the Small Wind industry. According to
another organization, the World Wind Energy Association
(WWEA), it is difficult to assess the total number
or capacity of small-scaled wind turbines, but in
China alone, there are roughly 300,000 small-scale
wind turbines generating electricity.
|
|
|
|
| Hydroelectric
|
 |
Hydroelectric
power has long been recognized as the most cost-effective
power available in the world. If you are fortunate enough
to have a creek running across your property for even part
of the year, you may be able to harness its energy to provide
for some or all of your electrical needs. If done in a conscious
manner, this can be accomplished without adversely affecting
the environment, as some larger hydroelectric projects have
been known to do.
There
are two main types of hydroelectric systems: AC and DC. Given
the choice, most people would choose the AC system so that
they can run normal lighting and appliances. This is somewhat
misleading, however, as either system can provide AC power
to your home. So which one to pick?
Because
AC hydros by their nature do not provide any surge capacity
nor storage capability, they must continuously generate the
peak amount of power required at any time, including motor
starting surges. This means that if we need to start a power
tool, i.e. a worm drive skillsaw, we will need to produce
about 4000 watts to start the saw. An AC hydro, therefore,
would have to be capable of providing at least 4000 watts
(96 Kilowatt-hours/day), continuously. This is enough power
to run about 4-8 typical homes. Rule of thumb says that if
we can't generate at least 5000 watts (120 Kilowatt-hours/day),
an AC hydro system will not be appropriate. Because of their
relatively large power generating requirements, AC hydros
generally need large quantities of water. This in turn requires
large pipes and large, expensive turbines. AC regulating systems
also tend to be costly.
By
comparison, a DC hydro generating even 50 watts (1.2 Kilowatt-hours/day),
which charges a battery and operates an inverter of sufficient
size, will have no problem starting the saw mentioned above.
A DC hydro generating 100 watts can provide enough power to
comfortably run a small, energy efficient home. A flow of
15 gallons per minute, falling 100 feet will produce this
amount of power. This is about the same amount of power that
you will get from 12-51 watt PV modules on a sunny summer
day.
While
there are many applications where an AC hydro system would
be appropriate, these systems will generally require some
preliminary engineering to provide you with a performance/cost
estimate. For this reason, we do not list any AC hydro systems
in our catalog. Please contact us giving head, flow, pipe
and wire distances if you would like a performance/cost estimate
on a AC hydro system.
The
amount of power that your hydro system can produce is dependent
on the dynamic head as well as the quantity of water. As such,
pipe sizing is very important. If your pipe is too small,
you can seriously reduce the amount of power produced. Feel
free to contact us and we will be happy to explore your options
for hydro power. Don't forget, you need a water source to
operate a hydro-electric system. |
|
 |
| "Humanity
already possesses the fundamental scientific, technical, and
industrial know-how to solve the carbon gases and climate problems..." |
|
|