Solar Panels or Wind Generators for Electric Fences
The remote location of many electric fences causes regular
inconvenience to farmers & animal owners, who repeatedly have to go
and collect, charge and return the battery.
However, most electric fences often use only a little power, which
makes powering them from a solar pv panel or small wind generator,
normally very viable.
Electric fence units are called "energisers" and output power is rated
in Joules. If you have not already got the energiser unit, we can
recommend the Gallagher
Powerplus or Maximaster Ranges as they are designed to be powered
from solar pv.
We also have to question the high prices charged by some
specialist electric fence companies for their solar panels.

Powering Electric Fence Energisers From Solar Panels
The first thing to do is to establish the power draw of your
fence energiser unit. This figure can normally be obtained from the
manufacturer of the energiser unit. Alternatively, the power draw can
be tested with a multi-meter.
Below we have listed the Gallagher 12v Energiser range. Our recommended
solar panel is based on central England, with the energiser running
24hrs per day, 7 days per week, all year round. For customers outside
of England (Scotland, France etc) please contact us so that we can
advise on the correct solar panel. Generally speaking, the further from
the equator - the larger the solar panel required.
Our solar panel recommendations below assume that the solar panel will
be facing due south, tilted at approx 60 degrees from the horizontal,
with a totally unshaded view of the sun all year round (taking into
account long shadows from trees & buildings caused by the sun being
low in the sky in mid-winter).
Maximaster
100, Output
0.6J
Power Consumption 80ma @ 12v (0.96w) x 24hrs = approx 24 whrs per day
Approximate solar pv panel size for central/mid UK = 30w to 40w
Recommended : 1x Suntech
30w solar panel
Maximaster 200, Output
1.3J
Power Consumption 120ma @ 12v (1.44w) x 24hrs = approx 35 whrs per day
Approximate solar pv panel size for central/mid UK = 40w to 50w
Recommended : 1x Suntech
50w solar panel
Maximaster 300, Output
2.3J
Power Consumption 200ma @ 12v (2.4w) x 24hrs = approx 58 whrs per day
Approximate solar pv panel size for central UK = 70w to 85w
Recommended : 1x ET
Solar 85w solar panel
PowerPlus B700, Output 6J
Power Consumption 500ma @ 12v (6w) x 24hrs = approx 144 whrs per day
Approximate solar pv panel size for central UK = 2 x 85w
Recommended : 2x ET
Solar 85w solar panels
PowerPlus B180, Output
1.25J
Power Consumption 140ma @ 12v (1.68w) x 24hrs = approx 41 whrs per day
Approximate solar pv panel size for central UK = 50w to 60w
Recommended : 1x Suntech
50w solar panel
PowerPlus B280, Output
2.1J
Power Consumption 210ma @ 12v (2.52w) x 24hrs = approx 61 whrs per day
Approximate solar pv panel size for central UK = 80w to 90w
Recommended : 1x ET
Solar 85w solar panel
Most systems will require a solar charge controller if there
isn't a
dedicated solar input connection on the energiser. We would recommend
the Steca
Solsum
6.6F, 8.8F or 10.10F range as extremely good value little units. If
the conditions where
the controller is sited are likely to be very harsh, we suggest
considering one of the fully potted Morningstar
solar controllers. A solar controller must be matched to the
maximum current of the solar panel. For more information about solar
charge
controllers click
here.
Custom Designed Solar & Wind Power Systems
If required, we can custom design a power system for your
electric fence to your exact specifications. If you would like any
assistance, please don't hesitate to contact our
system design team.
Solar power is a low maintenance energy solution - occasional
cleaning
of the solar panel with a soft, damp cloth is all that's required. All
of the solar panels we sell are suited to harsh outdoor environments,
with sealed junction boxes / connectors and anodised aluminium frames.
They also feature a 5 year standard warranty and 25 yr performance
warranty.
At the EDC, we also supply wind
generators, gel
& agm batteries, quality exterior-rated
cable, connectors,
battery
boxes and solar
panel mounting brackets.
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