ST388 30W Solar Home System Mobile Phone Charger, Lighting, Pay As
1×12.8V/6000mAh Contoller box
1×30W Poly Crystalline Solar Panel
3x 3W/300lm LED bulbs with 5M cables
1x Torch 3.7V 2000mAH Li-ion Battery
1x 5-in-1 Mobile phone charger cable
solar power system, is a power system designed to supply usable
solar power by means of photovoltaics. It consists of an
arrangement of several components, including solar panels to absorb
and convert sunlight into electricity, a solar inverter to convert
the output from direct to alternating current, as well as mounting,
cabling, and other electrical accessories to set up a working
system. It may also use a solar tracking system to improve the
system's overall performance and include an integrated battery
solution, as prices for storage devices are expected to decline.
Strictly speaking, a solar array only encompasses the ensemble of
solar panels, the visible part of the PV system, and does not
include all the other hardware, often summarized as balance of
system (BOS). As PV systems convert light directly into
electricity, they are not to be confused with other solar
technologies, such as concentrated solar power or solar thermal,
used for heating and cooling.
PV systems range from small, rooftop-mounted or building-integrated
systems with capacities from a few to several tens of kilowatts, to
large utility-scale power stations of hundreds of megawatts.
Nowadays, most PV systems are grid-connected, while off-grid or
stand-alone systems account for a small portion of the market.
Operating silently and without any moving parts or environmental
emissions, PV systems have developed from being niche market
applications into a mature technology used for mainstream
electricity generation. A rooftop system recoups the invested
energy for its manufacturing and installation within 0.7 to 2 years
and produces about 95 percent of net clean renewable energy over a
30-year service lifetime.
Due to the growth of photovoltaics, prices for PV systems have
rapidly declined since their introduction. However, they vary by
market and the size of the system. In 2014, prices for residential
5-kilowatt systems in the United States were around $3.29 per watt,
while in the highly penetrated German market, prices for rooftop
systems of up to 100 kW declined to €1.24 per watt. Nowadays, solar
PV modules account for less than half of the system's overall cost,
leaving the rest to the remaining BOS-components and to soft costs,
which include customer acquisition, permitting, inspection and
interconnection, installation labor and financing costs.