Trev’s Brisbane Forecast for next 7 Days from 7 September

In my previous post I mentioned how early solar PV owners, who installed grid connected systems around 2000, had to register our solar systems. We also had to sign power purchase and technical connection contracts with the local electricity distribution company. It was Energex in south-east Queensland. Energex had two separate departments to prepare each contract, and they didn’t appear to communicate very well, as the power purchase agreement and the technical connection agreement didn’t correspond on how the power flow from our solar systems was to be metered. As well the technical contract was about 40 pages long, clearly written for much large power generators such as the sugar mills. It would have required us to notify Energex each night when the solar system shut down at sunset, or at sunrise when the system switched back on. If it rained or under heavy cloud, the solar output would almost cease compared to full output under midday sun. We asked “Would we have to notify Energex then as well?” Most systems at that time had a maximum power output of about 1000 watts. That’s equivalent to switching on and off your toaster. It took a group of us over 6 months to negotiate more reasonable Energex contracts that agreed with each other. Everyone was on a learning curve!!

So what’s in store for us this week? We’ve just had a few cooler days with southerly winds, but this is about to change and warm up with temperatures reaching the high 20’s by Saturday and Sunday. Evenings will be cool to mild. Days will be mostly sunny with fresh northerly winds later in the week. Then a southerly wind change should return on Monday and start to cool things down by Tuesday. As usual, this is after a trough and front passes across the continent. There’s a small chance of a storm on Sunday as the trough approaches, or at the very least a shower or two.  Make sure you have the sun cream if out and about.

See ya next week. Trev the Weatherman

Source: Bureau of Meteorology and

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