{"id":69427,"date":"2023-01-09T11:17:42","date_gmt":"2023-01-09T00:47:42","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=69427"},"modified":"2025-12-19T14:28:01","modified_gmt":"2025-12-19T04:58:01","slug":"qld-dumb-solar-shutdown","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/qld-dumb-solar-shutdown\/","title":{"rendered":"Dumb Solar Shutdown Device: Queensland Goes It Alone On GSD"},"content":{"rendered":"

\"Generation<\/h2>\n

Queensland is taking the lead in going backwards on solar power, with Energy Queensland mandating a new device, a few new acronyms, a new layer of complexity for installers and a new expense for owners of some new solar power systems. All in the name of keeping things under control as solar generates more and more energy in the Energex and Ergon networks.<\/p>\n

Generation Signalling Device (GSD) Requirements For Energy Queensland<\/h2>\n

They’re calling it an “Emergency Backstop Mechanism”<\/a> which, if you take it at face value, and I mean the choice of words is telling, it is a strange approach. It reminds me of an old workplace I frequented. The door from the office to the back of house was labelled “Planning and Operations Department” and some wag wrote an apt subtitle… “Panic and Reactions”.<\/p>\n

Instead of actively managing the ebb and flow of a situation, it seems they’re entrenching a mindset that just switching it off until the problem goes away is acceptable practice. “NO” is the easy answer.<\/p>\n

\"GSD

GSD – another device to clutter the switchboard.<\/p><\/div>\n

What Is A Generation Signalling Device (GSD)?<\/h2>\n

This is a device installed on a solar system that allows the electricity utility (Energy Queensland) to switch off the solar power system remotely.\u00a0 A signal is sent to the GSD via the power lines using Audio Frequency Load Control (AFLC).\u00a0 The GSD receives the signal and switches the solar system either OFF or ON depending on the signal received.<\/p>\n

\"GSD

Simple connections for simple results.<\/p><\/div>\n

What Solar Systems Require A GSD?<\/h2>\n

New grid-connected solar systems with an aggregated capacity of 10 kVA and above.\u00a0 For large solar systems with multiple inverters, the installer can install one GSD on each inverter or install a single GSD connected to a Demand Response Controller.\u00a0 There are some exclusions, such as inverters that are solely supplied by a battery, and inverters located in an area not serviced by Energy Queensland\u2019s AFLC system.<\/p>\n

I confess I’m not native to Queensland and have lifted a little of this GSD explainer from an article put out by AC Solar Warehouse<\/a>. They deserve an honourable mention, as a company striving to provide the best advise in the industry.<\/p>\n

[One wag has pointed it should be an aggravated capacity, I thought it seemed an apt description, a Freudian slip from an industry that’s exasperated by adhoc rule changes at short notice.]<\/p>\n

What’s Wrong With Queensland’s Stupid Shutdown Device?<\/h2>\n

The smarts are available to offer flexible exports<\/a> instead of arbitrary hard limits. SA Power Networks has already proven it works<\/a> using an internet connection and variable output controls integrated inside<\/em> the inverter.<\/p>\n

So why does Queensland think it’s a good idea to have a dumb device to just turn solar off? Simplicity is a virtue – I’m the first to point that out, but we should be calling out dumb ideas for what they are. Just like limiting car chargers to 20 A, it’s a simple approach to a complex problem. Dumb… to put it simply.<\/p>\n

\"GSD,

The other thing that’s wrong is that solar inverters and switchboards don’t always live together. Extending cables when they’re not adjacent may be impossible and wireless solutions may not exist, we just don’t know.<\/p><\/div>\n

What’s Even More Wrong About It?<\/h2>\n

At the recent All Energy Conference in Melbourne (otherwise known as solar Christmas) there were murmurs about these changes being introduced by the banana benders. However, despite some token consultation<\/a> and subsequent backlash from the solar industry on GSD<\/a>, it seems the rules have been developed in secret. The upshot is that nobody is properly prepared.<\/p>\n

Again the solar coaster has taken another unnerving dip. Installers are left with a queasy feeling as once more they face delays that make things more difficult and expensive for everyone. Except for the people making the network rules, they save some money on infrastructure upgrades, and the outcome from ad-hoc decisions costs them next to nothing.<\/p>\n

The main points are:<\/h3>\n