Solar Roof Top
Solar power as it suggests from its name it is conversion of sunlight
into electricity. Solar power systems use lenses or mirrors and
tracking systems to focus a large area of sunlight into smaller area
The heat which is collected is used as a source for conventional
power plant. Solar energy technologies such as photovoltaic
systems, concentrating solar systems, passive solar heating and
lighting, solar hot water, and solar-powered heat and space cooling
are all viable applications for the replacing the burning of tons of coal,
reducing the effects of global climate change.
Roof top Solar Characteristics
- The system should be set up facing south or angle nearest to
south to obtain maximum power.
- The Solar panels must be tilted at an angle of 27-30 degrees
with respect to the land surface.
Who can use Solar Roof Top`s?
The number of PV installations on buildings connected to the
electricity grid has grown in recent years. Demand is also driven by
the desire of individuals or companies to obtain their electricity from a
clean, non-polluting, renewable source.
In solar systems connected to the electricity grid, the PV system
supplies electricity to the building and any daytime excess may be
exported to the grid. However, to be independent of the grid supply,
battery storage is needed to provide power at night.
Holiday or vacation homes without access to the electricity grid can
use solar systems more cost-effectively than if the grid was extended
to reach the location. Remote homes in sunny locations can obtain
reliable electricity to meet basic needs with a simple system
comprising of a PV panel, a rechargeable battery to store the energy
captured during daylight hours, a regulator (or charge controller),
and the necessary wiring and switches. Such systems are often
called solar home systems (SHS).
On an office building, roof areas can be covered with glass PV
modules, which can be semi-transparent to provide shaded light. On a
factory or warehouse, large roof areas are the best location for solar
modules. If the roof is flat, then arrays can be mounted using
techniques that do not breach the weatherproofed roof membrane.
The vertical walls of office buildings provide several opportunities for
PV incorporation, as well as sunshades or balconies incorporating a
PV system. Sunshades may have the PV system mounted externally to
the building, or have PV cells specially mounted between glass sheets
comprising the window.
Solar energy has been the power supply choice for industrial
applications, especially where power is required at remote locations.
Because solar systems are highly reliable and require little
maintenance, they are ideal in distant or isolated places.
Solar energy is also frequently used for transportation signaling,
such as offshore navigation buoys, lighthouses, aircraft warning light
structures, and increasingly in road traffic warning signals. Solar is
used to power environmental monitoring equipment and corrosion
protection systems for pipelines, well-heads, bridges, and other
In unit where there is huge energy demand, it can be cost-effective to
configure a hybrid power system that links the PV with a small diesel
Rooftop photovoltaic power station
A Rooftop photovoltaic power station is a system which uses one or
more photovoltaic panels, installed on rooftops of residential or
commercial buildings, to convert sunlight into electricity. The various
components in a rooftop photovoltaic power station include
photovoltaic modules, mounting systems, cables, solar inverters and
other electrical accessories with the benefits -
- A house owner can install solar panel on the
rooftop to meet his power needs
- He can then sell the extra power generated
to distribution companie
- The owner can also rent out the space for
setting up a solar power plant
- In return, discoms will either pay in cash or
give subsidy in the seller's electricity bill
Type of Mounting
Ballasted Mount :
Some solar systems use weights (called ballasts) to hold the solar
array to the roof instead of bolting it down. Ballasted systems are
often preferable because they do not penetrate the roof, but only
work for large system in low-wind zones.
Mechanically Attached :
Traditional rooftop systems are mounted to the posts secured in the
roof beams. Special roof leak protection is added to each penetration
to stop leaks. These attached systems work for any size, and hold
tight even in windy areas.
Hybrid Mount :
Often referred to as a minimally attached system, the hybrid mount
uses some structural attachments combined with typical ballasted
design. This results in minimal roofing penetrations but a little more
security where needed.
How Sahaj Solar helps in Solar Roof Top`s
Sahaj has Cutting-edge R&D initiatives to ensure rapid cost
reduction and high efficiencies with a portfolio of multiple patents in US
In-house reliability testing capability for solar modules to ensure high
quality standards; with the help of fully automated cell and module
supplying facilities with equipment and inspection tools from world's top
Expertise in turnkey projects to customized solutions we are the most
dedicated energy Solution Company.
Remote buildings, such as schools, community halls, and clinics, can
benefit from solar energy. In developing regions, central power plants
can provide electricity to homes via a local wired network, or act as a
battery charging station where members of the community can bring
batteries to be recharged.
PV systems can be used to pump water in remote areas as part of a
portable water supply system. Specialized solar water pumps are
designed for submersible use or to float on open water.
Large-scale desalination plants can also be PV powered using an array
of PV modules with battery storage. PV systems are sometimes best
configured with a small diesel generator in order to meet heavy power
requirements in off-grid locations. With a small diesel generator, the PV
system does not have to be sized to cope with the worst sunlight
conditions during the year. The diesel generator can provide back-up
power that is minimized during the sunniest part of the year by the PV
system. This keeps fuel and maintenance costs low.