Photovoltaics are cells made of semiconductor material and they use solar energy to free electrons from atoms. These moving electrons result in electricity.
A group of PV cells are connected in a module to form a single structure. These modules are connected to form a solar plant.
Solar heating systems or solar thermal heating systems provide hot water by using solar energy to exclusively for heating water. On the other hand, a solar plant with PV modules can be used for all energy needs, including and not limited to, heating water.
Use our Solar Calculator for a rough estimate. Contact us for a detailed estimate!
We also have an article in our blog post under 'Understanding Solar' section for benchmarks on how to calculate it yourself and what factor determines the capacity.
The roof top solar systems do not need any permission for self-consumption needs only. Prior permission is to be taken from DISCOM to install the Solar system if it involves a net metering system (selling excess solar power back to the electricity utility company/DISCOM)
PV technology produces electricity directly from electrons freed by the interaction of sunlight with a solar panel made of semiconductor material. The power provided is direct current (DC) electricity. A PV system will consist of an array of modules generating DC electricity, an inverter to convert the DC currect to AC and sometimes battery storage back up with charge controller.
Solar panels work just fine in ambient light and will produce significant energy in the fog or on overcast days. In fact, solar panels are actually more efficient at cooler temperatures than hot ones. If there is enough light to see your hand in front of your face, then solar panels can produce electricity.
PV modules produce power anytime the sun is out. On cloudy days power output is considerably reduced.
If fallen leaves, shadows or something similar cover a PV module, resistance increases at the affected area and overall power output decreases significantly. PV modules incorporate a Bypass Diode function that minimizes the effect of shadows on the unit’s surface area.
As photovoltaics generate electricity from light, not heat, PV technology is highly suitable for cold weather environments, on the whole even generating more power at lower temperatures. This is because they are electronic devices, and almost all electronic devices operate more efficiently at cooler temperatures.
PV modules generally have a product life of about 25 years, and hence solar plants are considered to have a 25-year project life (The CERC - Central Electricity Regulatory Commission - a key regular of the power sector in India - also assumes a 25-year useful life in the calculations for solar PV projects.
Normally about 13 kg per square meter of panel. Most panels are around 1.6-1.8 square meters.
Solar PV panels are very robust and can withstand the normal stresses subjected by nature.
In most residential areas no cleaning is necessary, as rainfall will remove the majority of grime. Solar panels have no moving parts and do not require regular maintenance. Typically, the recommendation is to hose off the panels once a year or so. Typically, this will cause only a very slight loss in efficiency (about 5 percent) over the lifetime of the panels.
Solar panels actually protect and preserve the portion of the roof they cover. Most solar panels are not attached directly to the roof itself, but rather to a mounted railing system. Installers add sealants to fill in any gaps and often the mounts are surrounded by metal “flashing,” or coverings that act as an extra barrier from the elements.
Most roofs are strong enough to take a solar installation without any reinforcement. However, in case of larger systems, it is suggested to obtain the opinion of a qualified Structural Engineer. We will do this check for you.
In short, yes. The various components of SPV system shall have IEC/ISI/BIS Certification and confirm to technical standards specified by MNRE/APTRANSCO/DISCOMs. You can learn more about project execution standard in our blog section 'Understanding Solar'.
It takes not more than 4 to 8 weeks to complete a solar rooftop installation.
Not all rooftop solar plants generate power during a power failure; only some do. The difference lies in the inverter and the functionality it supports. Grid-interactive and hybrid inverters supply electricity even during a power failure while grid-tied and off-grid inverters don’t.
Solar panels return two to four times their cost in saved electricity bills and typically pay for themselves completely within 5 to 10 years. If you live in a state with good incentives, the payback period can be as short as 2 to 4 years.
Subsidies for solar systems typically and historically feature fixed time of operation, diminishing year-on-year subsidy amounts, and a sunset when the subsidy ends and solar power — in order to successfully matriculate into a mainstream energy choice — must be available at market price or as we like to say, achieve grid parity. India has achieved grid parity for most categories of users.
Yes. Accelerated Depreciation benefits can be claimed by Off-Grid and Grid-Connected Solar Power Developers in order to offset taxes on profits from their connected businesses. Typically, 90% depreciation is allowed with 80% allowed in the first year.
Rooftop solar power is much cheaper than power from diesel generators. Solar PV generates power at a cost of about Rs. 4.5-5/KWh while diesel generates power at about Rs. 16/KWh. Whether solar is more expensive than grid power depends on your current tariff. Solar power is cheaper than grid power for many consumers such as consumers paying a commercial tariff.