General Grid Connect Solar Power

Posted by solar directonline on July 21st, 2018

What about the energy it takes to produce a solar power system?

Although solar electricity is pollution-free, PV systems require a certain amount of energy, which must be ‘reimbursed’ before they can be considered as renewable and clean. This is known as “embodied energy”. An assessment from the International Energy Agency concluded in mid 2006 that roof-top solar PV systems recover their energy content (from manufacturing and recycling) within 1.6 to 1.8 years in Australia. That figure has since improved.

Once they have reimbursed their initial energy input, roof-top PV systems can avoid the emission of 40 tonnes of CO2, depending on their location and on the local electricity mix available. Roof-top PV systems in Australia during their 30 year lifespan are expected to produce around 17 times the amount of energy needed for manufacture, installation and dismantling.

How much of a reduction in carbon dioxide emissions will I achieve?

Using a comparison to a car, the average vehicle in Australia travels 20 000 km per annum, which is equivalent to 3.3 tons of carbon dioxide discharge annually. A 2kw grid connected system will prevent 3.3 tons of carbon dioxide being generated through coal fired power generation – so it’s the equivalent of taking a car off the road each year. Solar power system components

What does a typical home solar system consist of?

The heart of a photovoltaic solar system is the solar array. Made up of multiple panels (individually measuring roughly 1 by 1.5 meters), this array absorbs the energy of a specific range of available sunlight and converts this energy into electrical energy. The array is mounted on a frame that allows the panels to be securely mounted with minimal interference with the waterproofing and structure of the roof, as well as providing the correct aspect and elevation for the array so as that the maximum amount of available sunlight in received and converted.

A cable is run down from the array to the inverter, a device designed to efficiently convert the widely fluctuating power from the solar array into a predictable and usable energy feed. A second cable connects the inverter to your house’s switchboard, which is in turn connected to the main power grid, creating a continuous and dynamic system for the contribution of solar energy to your house. The inverter also acts as a simple data logger; an information screen on the inverter will display total energy production, daily energy production, and instantaneous power. These figures will fluctuate depending on the time of year, the cloud cover, and temperature, and will allow you to keep a record of your system’s performance.

Solar power systems can also be optionally fitted with easy-to-use remote monitors, internet enabled data loggers, and even sensors to determine solar availability, panel temperature, air temperature, and wind speed.

Is there any maintenance involved?

With a grid connected system, there is very little maintenance required. Electronic components should be maintenance free. Solar Direct Online systems come with complete instructions for maintenance.

Like it? Share it!

solar directonline

About the Author

solar directonline
Joined: May 26th, 2018
Articles Posted: 15

More by this author