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Solar electric, or photovoltaic (PV), systems convert
sunlight directly to electricity. They can power an
electrical appliance directly, or store solar energy in a
battery. An off-grid PV system, commonly referred to as a
stand-alone system, is designed to produce electricity for a
home, business, or farm, without any supplemental power from
the utility or electric distribution grid. An off-grid PV
system consist of a PV array, controls, safety equipment,
and inverter (to convert DC power to AC), and a battery
system or bank to store power. The battery bank is essential
because they store electricity that can be used when the sun
is not shinning.
In some cases, such as a "remote" location that is not close
to a power source, a PV system may be more cost-effective
than installing power lines and step down transformers in
applications such as electrical fencing, lighting, and water
pumping. Maintenance requirements are often less for a PV
system than, for example, a diesel generator.
Successful stand-alone systems generally take advantage of a
combination of techniques (maximizing energy efficiency) and
technologies (PV combined with a back up generator or PV
combined with a wind turbine) to generate reliable power,
reduce costs, and minimize inconvenience.
Vorks Energy is a MNRE, Govt. of India approved system
integrator for Grid Connected and Off-Grid PV system
installations.
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