A solar PV plant must have another source of power (grid/DG/battery) to function – the other source is used to provide a reference voltage as solar power is continuously varying. In the absence of reference power, the solar plant will not generate electricity even in bright sunlight.
The sum of the wattage of individual appliances represents the load i.e., a 60W fan and 40 W light represent a 100 W load. If these two appliances run continuously for an hour they consume 100watt-hours. If they run 10 hours they will consume 1,000 watt-hours or 1 kilowatt hour (kWh), alsoknown as one unit. We can illustrate this with an example
| Appliance | Number | Wattage | Tatal Wattage | Hours used between 10 to 4 | Energy (Wh/day) |
| Lights | 4 | 40 | 160 | 5 | 800 |
| Fans | 3 | 60 | 180 | 6 | 1080 |
| T.V | 1 | 120 | 120 | 3 | 360 |
| Fridge | 1 | 300 | 300 | 4 | 1200 |
| 760 | 3440 |
Dividing the Total Wattage and Energy by 1,000 gives us the load in kW and energy consumed in kWh i.e.,
Your electricity consumption is billed on the basis of number of kWh consumed. Since solar is onlyavailable during daytime, it is the load and energy consumption during daytime that will need to beascertained to calculate the size of the plant. Residents are usually away from home during the dayand most energy consumption is at night. It is therefore important to calculate the size of the plantbased on day time use to avoid over sizing the plant. In real world situations it may be difficult to determine the number of hours that appliances are used during the day. We can instead ascertain the energy consumption by noting the electricity meter reading at 10 AM and 4 PM for a few days. The difference between the readings is the energy consumption (kWh) for that period. If the electricity meter is a digital meter it usually also provides the load in amperes and kW. This can be noted several times each day to determine the average load.
We will discuss your energy use and take a look at your roof. We will also prepare a free customized quote and project your energy savings for the next 25 years.
Your personalized agreement locks in your solar energy cost for the next 25 years*. There are no hidden fees, but you'll find all the guarantees and warranties that protect you and your system
We will design a unique solar energy system for you, send you a drawing for approval, obtain all necessary permits, and complete the installation.
We will take care of all of the purchases and inspections. All you have to do is watch it all come together.
We will monitor your system to ensure maximum productivity and provide complimentary maintenance and customer support from trained professionals in the first year of operation. We also offer annual maintenance contracts.
Let's put the plan into action!
Capital Subsidy of 15% is applicable only for captive power plants other than Industial and Commercial use.
No. Capital Subsidy cannot be claimed for plants beyond 500 KW size. Also, capital subsidy is made available only to Off-Grid and Decentralized Solar Power applications and not Grid Tied Plants that are in the business of selling the generated power.
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.
Net metering is a method by which solar PV plant owners can be compensated for any excess solar power that they supply to the grid. The conventional uni-directional electricity meter is replaced with a bidirectional meter that spins in reverse for energy that is supplied to the grid. The consumer is billed by the utility only on the net energy consumption indicated by the meter.
The usual benchmark for energy generated from a 1 kW Solar Power plant is considered as 1500 units per year. This is only a benchmark and the actual output varies for each given location. The amount of actual energy generated from a Solar Power Plant in a year depends on both internal and external factors.
External factors which are dependent on the Environment are: Number of sunny days | Solar irradiation | Day temperatures | Air mass
Internal factors which are within the control of a Solar Developer:
Yes, though they produce less electricity. Under a light overcast sky, panels might produce about half as much as under full sun.
There are 3 possibilities depending on the type of system you have installed:
The solar system typically lasts for 25 years.
Solar panels have at least 5-year manufacturing defect warranty and a 25-year output warranty (typically 90% of power output at year 10 and 80% of power output at year 25). The warranty of the panels may also extend up to 10 years.
A PV system is made up of different components. These include PV modules (groups of PV cells), which are commonly called PV panels; an inverter for a utility-grid-connected system – when alternating current (ac) is required than direct current (dc) is required; wiring; and mounting hardware or a framework; one or more batteries (if storage is required).
A solar inverter, or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network.
This will depend on the kind of loads you run, but usually running the entire load off solar PV is not recommended as solar power is only generated during daytime. With heavy rain or mist solar power may not be generated even during the day (30-60 days of generation may be lost in a year due to these factors). The solar plant may not run loads with heavy starting current requirements, such as water pumps. A solar plant is ideally used used to support part of the load, similar to a home inverter/UPS leading to substantial cost savings and protection against inflation over a 25 year period.
The size of the photovoltaic system is correlated to your home's energy-use needs, available space for a system, and overall costs for the system components and installation. Our Consultants can help determine the best.
The area required by a rooftop PV plant depends on the extent of shade-free space available and solar panel efficiency. Approximately 100 sq.ft of roof space is required for 1 kW of solar of capacity at current crystalline panel efficiency levels.
Although southern exposure increases the effectiveness of a residential solar power system, your home may still work for solar power without having south facing exposure. You may want to seek consultation from our professional solar designer or installer to ensure success.
The kind of roof determines if solar panels can be installed. Ability of the roof to support the weight of the panels and mounting structure even in strong winds is the critical parameter.
We mount solar panels on a purpose-built system that is fastened about every six feet by penetrations into roof rafters. On a standing seam metal roof, these attachments are made directly to the standing seams, with no roof penetrations. On asphalt roofs, each mount is sealed with 50-year silicone sealant to prevent any leaks. We guarantee all roof work will be free from leaks. As for the weight of the array, it is less than 5 pounds (2.5 kg) per square foot, so a typically framed roof is more than adequate to carry the weight.
In order to have solar installed you need to own the home. If you are renting and want to install solar, you will need to provide us with written permission from the home owner and a copy of the same notarized.
Most work is conducted on the site of the array installation (roof or ground) so your operations will likely not be impacted. We coordinate our efforts with your team, from deliveries, securing equipment, to crane usage. For example, we always schedule the final tie-in around your schedule.
Power inverters are relatively quiet – emitting about as much noise as a refrigerator. They are generally installed in utility rooms or basements alongside existing mechanical systems, rather than in living spaces.
No – A backup battery bank can add as much as 25% in cost to a residential solar PV system. It's not necessarily more efficient either – a same sized solar array will yield about 7–10% less energy if it's battery-tied than its grid-tied counterpart. Most solar photovoltaic experts do not recommend adding a backup battery system unless there is concern about a long utility outage or the residence is in a remote location.
Your panels will take full advantage of a sunny day but don't worry if the sun is not shining as bright as you would like. Even when there is a little cloud cover, or even a lot of cloud cover your solar panels will still be producing some power. The great news is that you never have to worry about your home having electricity. Your home is always connected to the grid in case you need a little more power or if you have too much power being generated.
Maybe. Some utility companies will pay their customers for the extra power that is produced from the panels but it is dependent upon their company policies. To find out what the policy of your utility company is please contact your solar consultant or your account administrator.
It depends on the size of your home and the size of your solar PV system. In most circumstances we can install it in one day. However there are times where it takes us longer. Please contact your solar consultant or your account administrator to get an estimated installation time for your system.
Yes! As long as the sun shines, then your climate is a viable place for you to go solar!
Every home that goes solar needs to be surveyed by one of our trained professionals. During that inspection, they will look at your roof, the electrical system in your home, the frame of your home and lastly how much sun you get on your roof. Most homes will qualify as long they get enough sun. However, sometimes we discover small problems but we will always strive to deliver a solution so you can still enjoy the benefits of going solar at your home.
Very! We use the highest quality products to insure that your system is always working at its peak performance. Sometimes we do need to service the system to ensure that it is producing the amount of energy it is capable of. We monitor the system and know when that is needed so we will contact you if the occasion ever arises.
In order to satisfy safety regulations solar PV systems that are connected to the grid will automatically shut off during a power outage. The reason for this is to protect anyone working to get the power back on in your area. Since the panels are connected to the grid they would be back feeding power onto it and if someone down the road was working on the power lines he could potentially be electrocuted.
Yes. Our team knows and understands the process that is needed to get your solar PV system operating. We will work with you to make sure that all paperwork and permissions have been filed before you go solar.
We will determine the final system size after we survey your home.