1. Grid tied
electrically connected or tied to the local electricity grid
connected to the grid, with batteries for eventual downtime
3. Off grid
a stand-alone system, not connected to the local grid
1. Grid tied
A grid connected photovoltaic (PV) system, also known as a grid tied or on grid solar system, is the PV solar that is tied to the grid.
Grid tied systems are solar photovoltaic systems that generate power during sun light hours, but when there isn’t sun or during the night, the energy comes from the grid. These systems must connect to the grid. In addition, it is possible to feed back excess power generated to the grid and receive income for it in most government schemes called net metering.
The grid connected solar system could also be supported with batteries. It allows us to store your solar power in batteries for use when the power grid goes down. Those systems provide power to offset the grid power whenever the sun is shining and will even send excess power to the grid for credit or for future usage. Adding batteries to a grid connected system has major advantages. This system is very useful to cover short periods of bad weather and where there is a need for long-term storage. It allows for seasonal variations in the solar irradiation depending on weather conditions and seasonality.
Historically speaking, Hybrid energy models combine photovoltaic modules with one or more auxiliary energy source, such as diesel or gas engines. We have changed that so that our hybrid solutions only combine photovoltaic modules with other renewable or sustainable sources such as wind turbines. This allows our solutions to supply energy during nights or the hours where the solar panels production is not sufficient. Other environmental or usage profiles may also mean that a hybrid solution would be best suited.
Hybrid systems in utility scale solutions, give reliability to the grid by producing and feeding the grid during peak hours. In addition, it provides power for critical loads when the power grid is down.
3. Off grid
Off grid solar system solutions are used in remote locations or areas where it is really difficult to have access to the public grid for technical or financial reasons. However, it can be installed in other areas where power outages are common. It may also be that a client wants to be energy independent and have autonomy from the grid, receiving energy 24/7. Off grids are also known as stand-alone systems. These systems can be built to utility scale or to meet large industrial energy needs. During sunshine hours, the solar system feeds to the load directly and the excess electrical energy is stored in the batteries for a later use at night or during a period of low solar irradiance. For this kind of solutions, surface availability will be considered and where relevant suitable combination of hybrid solutions will be designed.
Don’t hesitate to ask us how you can benefit from our solar panel solutions.
We’d be happy to help you get a grip on your own energy supply!