G98 vs G99: what’s the difference?
A question you may have pondered if you’ve ever delved into the world of micro-generation devices.
Here, we discuss in layman’s terms the difference between G98 and G99.
G98 vs G99: the what and the why
G98 and G99 applications are requirements for grid-connected micro-generation devices.
That includes battery storage, solar panels, EV charging points, and heat pumps.
The applications are made to your local District Network Operator (DNO).
G98 and G99 are required to ensure that your micro-generation device will not cause any safety or stability issues for the grid.
So, G98 vs G99, what’s the difference?
G98
G98 applies to grid-connected micro-generation devices with a capacity of 16A (3.68kW) per phase or less.
It works on an ‘install then apply’ basis.
That means you can install your device first, and then, apply for certification within 28 days.
G99
G99 applies to grid-connected micro-generation devices with a capacity greater than 16A (3.68kW).
It works on an ‘apply then install’ basis.
This means you must apply for certification first, and then, once approved, you can carry out your installation.
G98 vs G99 in practice: GivEnergy All in One
Let’s look at a real-life example of the difference between G98 and G99.
The GivEnergy All in One comes in two models – the 3.6 and the 6.0.
The key difference between the two?
The 3.6 comes with 3.6kW peak power.
On the other hand, the 6.0 comes with 6000W nominal AC power and 7.2kW of peak power.
That means the 3.6 requires G98 certification, while the 6.0 requires G99.
In short, the 3.6 is a case of ‘install then apply.’ Meanwhile, the 6.0 is a case of ‘apply then install.’
‘Do I need to worry about G98 and G99?’
Your installer is responsible for making a G98 or G99 application.
As a customer, this is not something you need to be overly concerned with. However, it doesn’t do any harm to know.
Ready to start your micro-generation journey?
Micro-generation and energy independence should start with battery storage.
Start your journey today by finding an approved GivEnergy installer near you.
