Introduction : Inverters and batteries are two of the most critical components in a modern Solar PV system. Together, they allow you to convert, store, and optimise the use of solar energy in your home or business. This blog explains how inverters and batteries work, the differences between inverter types, and how proper integration ensures maximum efficiency and value.
Here’s what you need to know.
What Does an Inverter Do?
Solar panels produce direct current (DC) electricity. However, most household appliances and the electrical grid use alternating current (AC). The inverter’s job is to:
- Convert DC electricity to AC
- Connect this AC to the grid
- Monitor energy production and consumption by using a solar generation meter
- Control battery charging and discharging (in hybrid models)
Types of Inverters
There are two primary types of inverters used in Solar PV systems:
a. Standard (String) Inverter Converts solar DC to AC for self-consumption and export
- Not designed to work with batterys – Consumption + Export Only
- Suitable for homes with stable grid connection and daytime usage
b. Hybrid Inverter Performs same functions as a string inverter and connects to batteries
- Smart energy management (charge – discharge – export)
- Suitable for households looking to store solar energy for use later
- Most Hybrid inverters allow connection of 1-6 Batterys
- Modern Stackable systems are neat and use a small foot space
- Modern Systems are suited to internal or external installation
Role of Batteries in Solar PV Systems
Batteries store excess energy produced during the day for later use—typically in the evening or during grid outages. Benefits include:
- Maximise self-consumption
- Reduce reliance on grid electricity
- Provides energy use during peak-rate times
- Provide backup power during power outtages.
Modern batteries for solar use Li-ion technology with 10,000+ charge cycles and smart BMS (Battery Management System). Brands like Sigenergy & Saj have stackable systems. 3rd Party brands such as Dyness can connect there batterys to many brands of inverter and use conventional mounting methods to floor or wall. These are budget cost for similar performance but do not have the communication symmetry as a all-in-one system.
Integration Best Practices
At Moontree Solar, we install the stackable option as our preferred choice. When we do integrate inverters to batterys we do so with careful attention to efficiency & safety:
- Distance: Batteries should be within 2 metres of the inverter to minimise energy loss
- Cable Sizing: Battery capacity matched to cable diameter (16-25mm sq.)
- Network Connection: Inverter connected to home Wi-Fi for live monitoring and history
- Stackable Units: Modular battery setups allow for future expansion
- AC/DC Isolation: Stackable systems have built in DC battery Isolator. 3rd party batterys require a manual isolator.
Monitoring & Smart Control
String & Hybrid inverters function via Smartphone app that connects to the brand portal using the local network (ethernet/wifi/4G Dongle). This allows you to:
- View live generation and consumption data
- Track & Monitor battery charge and discharge cycles
- Adjust times for charge/discharge cycles
- Analyse energy usage trends
- Adjust system modes (e.g. off-grid, backup priority)
Our Recommended Brands
We only work with trusted global leaders like:
- SIGENERGY – Premium Stackable Solution for Domestic & Commercial
- SAJ – Excellent Stackable & Conventional options for Domestic & Commercial
- SOFAR – Excellent Conventional solution for Domestic & Commercial
Each offers hybrid options with extended 10-year warranties and full compliance with Irish grid standards EN50549-1.
Conclusion
An efficient inverter and battery setup is the key to unlocking your solar system’s full potential. Whether your goal is energy independence, cost savings, or environmental impact – Moontree Solar, designs and installs smart solutions tailored to your lifestyle.
Looking for a quality solar system? Contact Moontree Solar today for a customised consultation.
