What is solar energy? – Expert Electrical
Solar energy is, simply, energy provided FREE by the sun. Electricity can be produced directly from Solar Panels. (PV Panels)Solar energy produces electricity when it is in demand – during the day particularly hot days when air-conditioners drive up electricity demand.
For Example in 2015 – Solar Panels Produce roughly 10% of grid demand during the day in QLD.
In use, solar energy produces no emissions. One megawatt hour of solar electricity offsets about 0.75 to 1 tonne of CO2.
PV panels are being used increasingly, both in the city and in remote locations, to produce electricity for households, schools and communities, and to supply power for equipment such as telecommunication and water pumps. The majority of solar PV installations in Australia are grid-connected systems this is changing rapidly with Hybrid and Off Grid Systems becoming more and more financially viable.
Solar is for the people, its your sun so why waste it. Harvest it to produce clean, green electricity today.
Australia is one of the sunniest countries in the world and there is huge potential for solar PV to make a more and more significant contribution to electricity generation.
For more information on the real time energy mix of the Electricity Grid go to www.nem-watch.info/widgets/RenewEconomy/
Benefits of solar energy – Expert Electrical
Here are some benefits of solar energy.
Solar energy is not only sustainable, it is renewable. The Sunshine State of QLD has an average of 261 Sunny days a year. The creation of solar energy requires little maintenance. Once the solar panels have been installed and are working at maximum efficiency there is virtually no maintenance required. They are a silent producer of energy. There is absolutely no noise made from photovoltaic panels as they convert sunlight into usable electricity.
There are continual advancements in solar panel technology which are increasing the efficiency and lowering the cost of production, thus making it even more cost effective.
During operation solar electricity power plants produce zero emissions. The Return on Investment on solar is usually between 15-25% per year ROI. Much better than the current high interest savings accounts which will give 3-4% per year ROI.
Types of Solar Systems
Grid Connect Solar – Expert Electrical
Whenever the sun shines (and even in overcast weather), the solar panels generate electricity. The grid connect inverter converts the DC electricity produced by the solar panels into 240V AC electricity, which can then be used by the property/household.
If a grid connect system is producing more power than is being consumed, the surplus is fed into the mains power grid. Some electricity companies will meter the electricity fed into the grid by your system and provide a credit on your bill.
When the solar cells are not producing power, for example at night, your power is supplied by the mains power grid as usual. The energy retailer charges the usual rate for the power used.
As all of the components in a grid connect system have no moving parts, you can expect a long and hassle free life from your solar power system! Generous government renewable energy rebates mean you can also save thousands on a grid connect system for a limited time!
Hybrid solar – Expert Electrical
A typical Solar System with the addition of batteries, often used to store excess power so that it can be used to offset peak load or night time use. It is generally not intended to take a household ‘off grid,’ however in many cases it has the capability to do so. To understand this in more detail lets look at some terminology.
Solar PV refers to the panels on your roof which are then ‘tied’ or ‘coupled’ to an inversion system on the ground. A ‘grid tie solar PV’ system is the technical term for your typical domestic or commercial solar system and is commonly made up of panels and a single inverter.
AC Coupled Hybrid
This refers to a standard grid tie system ‘coupled’ to a hybrid inverter, which then charges batteries and outputs to the home and/or grid. We expect this type of system to become extremely popular, as it will be a great way to upgrade from existing PV and it is also extremely cost effective as a new install.
DC Coupled Hybrid
This is where we run the solar PV into a regulator, which also acts as a battery charger. This then connects directly to the batteries, which are then connected to the hybrid inverter. This is your typical structure for a full off grid system.
So now that we’re all on the same page where to from here?
What is the right system for you? Which batteries should you use? Is it cost effective and why install hybrid?
For most people the common scenario is going to be an AC coupled system using a standard inverter. A system like this can be selected as an add on, and can allow for complete off grid functionality at a later date. There are a number of design considerations to look at when selecting a hybrid system. These can have a dramatic effect on operation so should be considered closely.