The Difference Between On-Grid Wind
Farms and Off-Grid Wind Farms
the growing need to discover and explore renewable and
environmentally-friendly sources of energy, wind farms are an option
many are opting for. With the many problems surrounding energy prices
and usage of fossil fuels such as coal and oil, wind farms are now
being developed in various parts of the world. With wind being a clean
and inexhaustible source of energy, wind farms are a credible
replacement for the otherwise standard energy generation processes i.e.
coal, natural gas, oil and nuclear generation facilities.
farms essentially constitute a location where a
sizeable group of wind turbines are erected for the purpose of energy
generation. These turbines work to convert the wind's kinetic energy to
mostly electric and sometimes mechanical energy. The turbines, at times
even a 100 in number, are interconnected and cover a large geographical
area. Powered by the wind's strength and speed, the blades of the
turbines transform the wind's kinetic energy to a more usable form of
energy. This power from the turbines is collected by an integrated
system and then supplied to transformers to increase their voltage,
generally at a substation. Electric power supplied by the generators,
can be put to work at private homes, businesses, factories, farms etc.
are two types of wind farming practices, depending on how the energy
generated is used i.e. off-grid and on-grid wind farms.
Wind Farms: When wind
farms do not outsource their power to electric grids, they are known as
off-grid wind farms. The power generated is essentially used for their
own, personal purposes. Farmers, factory owners, homeowners or even
just the environmentally conscious can choose to generate their own
renewable power and put it to use according to their needs. This is
also a boon for people living in remote areas, with limited access to
electricity. People with their own off-grid wind farms strive to use
the power harnessed to beat rising electricity costs and maintain a
self sufficiency that can be easier on the wallet and the environment.
In some cases, people tie up their small wind generators to the
electric grid and simply transfer the extra, unused electric power back
into the grid for monetary credit or later usage. Some wind farm owners
also sell their excess power to centralized power utilities. When this
is done, utilizing the same power distribution line that carries power
to your property or business, this is also known as net metering.
Wind Farms: Wind farms that
sell the power they produce to electrical grids, qualify as on-grid
wind farms. It is basically the production of wind energy for
commercial use. Energy projects like these typically involve a PPA or
power purchase agreement, between the energy supplier and the buyer.
The buyers are normally utilities or bigger co-operative or industrial
factions. Power purchase agreements are drawn up to set various
guidelines for both the buying and selling parties, involving finances,
legalities, damages, the sharing of risk and project timelines among
others. Also, stipulated are matters related to environmental issues, a
key factor today. Some of the hurdles to overcome in order to ensure a
successful relationship for a productive renewable energy project are
the ability of existing power grids to handle the newly developing load
demands, extensive and overcrowded power lines and transmission issues.
Therefore, an extremely important factor that determines the viability
of an on-grid wind farm is the transmission study that assesses the
current and potential future load (queue) impacts, amongst other
technical items, on the existing transmission line to be tied into.
Article Source: http://www.articlesbase.com/environment-articles/the-difference-between-ongrid-wind-farms-and-offgrid-wind-farms-1450581.html
About the Author
Vert Investment Group ("Vert") is a leading
investment advisory firm focused on small to medium-sized utility-scale
generation projects in strong power markets. Vert utilizes its proven
methodology, the Staged Progression Model, to guide the development and
of on-grid wind farms and off-grid wind farms.