Hybrid Solar Systems are a cross between Off-Grid (battery incorperating) and Grid connected solar systems (battery-less).
The best thing about Hybrid systems are the capability to export excess power, once the battery is charged, to earn additional discounts from grid feed in tariffs. With Off-Grid solar systems, that energy goes wasted as it cannot be utilised, and Grid Connected solar systems cannot store energy so we get the best of both worlds!
In recent years we have seen two types of Hybrid solar systems evolve, with slightly different methods of operation.
- DC Coupled solar systems are those where the energy produced from the panels in Direct Current (DC) is sent directly to charge the battery without being converted into Alternating Current (AC). When called into operation the battery then supplies that energy, still in DC, to the inverter for conversion into AC for use in your home or business. With fewer energy transformations, this is typically the most energy efficient type of system. A SolarEdge-LG Battery combination is an example of these systems we supply.
- AC Coupled solar systems are those where the energy is converterd from DC to AC by your solar system inverter, the battery system then monitors this output along with your home demand and decides when it can convert some of the spare energy back into DC though its own inverter, and into the battery. When called upon, the battery system then converts that energy back into AC for use in the house. A Fronius or SMA inverter with an Eguana Evolve is an example of this type of system we supply.
We touch more on these systems specifically in these articles: