How much is the lifespan of the solar power system?
The solar power systems have a lifespan of between 25 and 30 years. Usually solar manufacturers guarantee that after 25 years of operation solar panels installed will generate about 80 % of the electricity they generated after system launch.A photovoltaic system of what size do I need?
The size of a solar system depends on how much electricity you need daily. Furthermore the size is restricted by your roof area and available budget.To determine solar system of what size you need, and also to find a balance between these three issues – daily energy needs, available budget and roof area.
How much does a solar energy system cost, and how much will I save on utility bills?
the solar system cost depends on a variety of factors, such as:● Whether the system is connected to the grid or is a stand-alone one;
● Whether it is battery based or not;
● Whether solar panels are installed on the roof or integrated therein;
● The system size (depending on your electricity consumption);
● Solar system rebate and other incentives reducing the price;
● The particular components used;
● The particular solar vendor/installer.
Your savings from a solar electric system would come from:
● System’s initial cost;
● Solar system rebate(s) available;
● System’s annual maintenance cost;
● Costs for getting connected to local utility grid (if you are not connected to it);
● Feed-it tariffs;
● Grid electricity price;
● Grid electricity price annual increase rate.
How will the solar panels be mounted?
Roof is not the only possible place to mount solar panels. There are four types of mounting used in solar systems:● Sloped roof mounting
● Flat roof mounting
● Roof-integrated mounting
● Ground mounting
● Faced mounting
Is solar electricity produced in bright sunny days only?
No. The best weather for producing solar power is surely the sunny day. This does not mean that solar electricity can be generated during sunny days only. Solar electricity is produced even in fog or rainy day although in such days energy yield is just 25-30 % of the one at best weather.Will my solar system keep on generating electricity if the utility power goes out?
No. If you have a solar system connected to the grid, in case of a power blackout your system will shut down immediately until the utility supply is restored. This feature is provided for safety reasons and is a must for every grid-tied system.Should such a grid power outage be unacceptable for your home or office, you could consider buying and installing a grid-tied system with power backup.
What maintenance will my solar system need?
As a rule solar electric system need little maintenance since they do not have any moving parts. During solar system lifespan (which is expected to last between 25 and 30 years) the following components have to be replaced:Inverter and/or charge controller (if any) – every 10-15 years of operation.
Batteries – every 5 years of operation.