Off Grid Solar & Wind - Power Systems for Remote Buildings
At the EDC we design and supply bespoke off-grid solar &
wind power systems for remote
domestic and commercial buildings. Since 1997 we have specialised in
independant, custom designed power systems for clients with properties
across Europe, in particular Spain, Portugal and France.
Remote properties can be a long way from the local electricity
substation, with utility companies often charging substantial sums of
for connection to the national grid.
well designed power system using solar panels or a wind turbine
provides an excellent solution to remote power needs, with low running
costs and high reliability. Solar pv panels are generally easier to
site than a wind generator and therefore tend to be more popular,
An off-grid solar or wind power system is specifically
designed to meet or
exceed the estimated power use of the building - the less energy
required, the smaller the system will need to be.
A typical off-grid solar pv system for a remote house in Spain
consists of an
array of solar panels,
a solar charge
and an inverter.
Solar & wind energy systems use banks of special
deep cycle batteries to provide power at night or when there is no
power being generated.
Efficient Design Reduces Power System Costs
In off-grid power systems, an inverter is often used to
convert the battery
power (DC) into mains power (AC). Inverters are highly
convenient, as they allow the use of most mains powered devices
or appliances. However they come at a cost - the inverter's conversion
and standby losses add up. Having a large inverter on stand-by all
night, just in-case someone may want to turn on a light, is very
On smaller buildings, devices which have longer running times
fridges, freezers and lighting are often directly powered from DC. This
eliminates the inverter's standby and conversion losses, which equates
to a smaller, less costly power system.
supply a carefully selected range of high efficiency appliances for
off-grid homes or buildings. Our range includes low voltage DC
freezers, efficient DC
and even an ultra-efficient 'T-class'
Appliances to avoid running from a solar or wind powered
include; plasma tv screens, electric cookers, air conditioning, clothes
heating or fan/space heaters. All of these items use large amounts of
As alternatives we would suggest gas or solid fuel for cooking
water heating panels for hot water. A solar oven
considering in hot sunny climates, likewise an evaporative fridge.
Clothes dryers can be avoided by careful design of the building and is
rarely a problem in hot climates. If you really need a large screen TV,
compare the latest LED based screens and keep an eye on the increasing
choice of low power LED projectors.
If the building is a new build, passive solar design
eliminate the need for heating, cooling and air conditioning. Older
buildings can be retro-fitted with super-insulation, natural
natural shading and improved windows.
These efficiency measures all contribute to reducing the
power demand for the building, and thus translate into smaller, less
costly, off-grid power systems. Using a high efficiency design
strategy, a very high quality of life can be achieved on a relatively
Off-Grid Solar Power Systems - What Next ?
require any assistance please don't hesitate to contact our system design team.