Types of Solar Photovoltaic (PV) System
Solar Photovoltaics convert daylight into electricity and can be used in Grid-Tied Solar PV Systems, where excess electricity is exported (sold) to energy companies using the National Grid and in Off-Grid situations where electricity is generated and stored in batteries for use locally.
Below we look at what equipment is needed for each type of system and discuss how Grid Tied, Off-Grid and Hybrid Solar Photovoltaic (PV) Systems work.
Grid-Tied Solar Photovoltaic (PV) Systems
If your building is already connected to the power network or a connection to the national grid would be easy and not too expensive to arrange, a Grid-Tied Solar Photovoltaic system is often the most cost effective PV System to install.
A Grid-Tied PV system offers the potential to make a profit on the energy you generate, whilst significantly reducing your energy bills and making a contribution to lowering CO2 emmissions.
Grid-Tied Solar Photovoltaic (PV) Equipment
Below is an overview of what equipment is needed in a typical Grid-Tied Solar PV installation.
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Off-Grid Solar Photovoltaic (PV) Systems
An Off-Grid Solar PV System is self contained and uses batteries to store and release electricity when the Solar PV Panels aren't active such as at night. An Off-Grid PV solution is ideal for remote buildings, application specific functions such as for powering machinery, temporary solutions, pumps, boats, pretty much anywhere where mains electricity isn't available and or isn't needed.
Off-Grid Solar Photovoltaic (PV) Equipment
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Hybrid Solar Photovoltaic (PV) Systems
If you were thinking that there is nothing stopping you from having both types of system installed at the same time you would be absolutely right. A Hybrid system gives you all the benefits of both systems with the added benefits from protection from power cuts and outages (from either solar or mains), coupled with the ability to live independently of fossil fuels whilst supplying others with clean, green energy.
A Hybrid Solar PV System would utilise a connection to the grid enabling power to be exported and also use batteries to protect against power cuts and store power for use locally.
Batteryless Solar Photovoltaic (PV) systems
This is where energy generated is supplied directly to appliances, think of the simple solar powered lights you can buy in DIY shops and you get the idea. This kind of power system is common powering water pumps, road signs and electric fences.