Off-Grid Solar PV Systems For Remote Locations
Silent, reliable, clean & low maintenance - just some of the
advantages of solar photovoltaic modules.
Solar 'pv' modules have always been a viable solution for providing
power in remote locations, normally being used to charge a bank of
deep cycle batteries. The further away the site is from the mains
power lines, the more viable an off-grid solar pv system becomes.
Typical off-grid solar pv projects include :
- Commercial Remote Sites : Communications,
Data Monitoring, Telemetry,
Railway Signalling & UPS systems.
- Rural Electrification :
Remote Communities, Villages, Schools, Medical Centres, Disaster
Relief & Aid
- Remote Security Systems :
Electric Gates, Security Barriers, Alarms & Solar
- Remote Lighting Systems - Bus
Stops, Streetlights, Road
& Traffic Signs, Stable
- Remote Off-Grid Buildings - Remote
Houses, Outbuildings, Barns, Cabins & Stables.
- Water Pumping - Remote
Wells, Boreholes, Cattle Watering, Irrigation &
- Leisure & Marine - Motorhomes
& Caravans, Boats,
Yachts and Narrowboats.
- Portable / Mobile Power - Camping,
Hiking, Travelling & Expeditions.
At the EDC, we supply systems for all of the above applications.
We are specialists in off-grid power and we provide full system
design and technical support services.
Early solar pv modules were expensive, not hugely powerful and most
were of a relatively low voltage - designed to charge 12V battery
Solar PV Modules - On Grid & Off Grid ?
Over the past five to ten years, the growth of the grid-connected
solar pv sector has resulted in a massive price reduction of the
larger grid-connect pv modules. Most of these modules have wattages
of between 180W to 330W and have a peak power voltage of around 36V
to 48V. Other than the size and electrical specifications, there is
little or no difference between most on-grid and off-grid modules.
However, these larger 'grid-connect' modules, whilst offering
excellent value, will often need an expensive 'MPPT' charge
controller to convert the high pv voltages into voltages suitable to
charge an off-grid battery bank. If a standard PWM controller is
used, much of the power can be wasted.
Most off-grid solar pv modules have a lower wattage - from 5W to
140W and have a peak power voltage of around 17V, which is designed
to charge a 12V battery. Solar pv modules have to produce a higher
voltage to compensate for the fact that when they get really hot the
output voltage drops. In fact, solar pv is far more efficient in a
Unfortunately, due to production volumes, the prices for smaller pv
modules has remained very high in comparison to the larger modules.
In some instances this produces a situation where a 100W pv module
may be suitable, and yet the 200W module in the same range is
Recent Photovoltaic Technology Developments
Sunpower's 'back-contact' cells are now hitting 21.5 % efficiency
and the latest Sanyo
HIT (hybrid monocrystalline & amorphous) modules are
giving power outputs of approx. 200W per m2 in good sun.
have been developing printed pv cells, using a nano particle ink.
Printed cells offer the chance to massively reduce the cost of pv
manufacturing. Nanosolar have recently launched their product on
the market, although prices are still high.
Meanwhile, biological photovoltaic materials are being developed
by Biosolar - reducing the
need for petroleum-based plastic cell components.
Flexible and folding pv modules have been on the market for a
while, offering convenience, portability and ease of fitting.
Popular in the leisure and marine markets, flexible pv panels need
to be well designed and robustly constructed to withstand regular
Selecting Solar PV Panels
If you are looking for general information regarding the planning
of an off-grid solar or wind energy system, you may like to visit
section of our website.
If you would like any project specific advice or prices, our
design team are able to design & cost a bespoke power
system to your exact requirements.
For full technical data regarding our solar pv panels, click the
relevant logo below where you can find the latest prices as well
as download product brochures, data sheets and installation
Solar PV Related Pages
solar pv panels work ?
much does a solar electric panel system cost ?
off-grid power system custom designed.
- plug & play remote power systems.