From: Frederik Vanrenterghem Date: Tue, 26 Dec 2023 09:42:13 +0000 (+0800) Subject: Voeg blog post ivm SWIS minimum verbruik toe. X-Git-Url: http://git.vanrenterghem.biz/www2.vanrenterghem.biz.git/commitdiff_plain/2817f60816e1ee23f8d12576015369904e794d32 Voeg blog post ivm SWIS minimum verbruik toe. --- diff --git a/source/assets/SWIS_minimum_demand_evolution.png b/source/assets/SWIS_minimum_demand_evolution.png new file mode 100644 index 0000000..a8da318 Binary files /dev/null and b/source/assets/SWIS_minimum_demand_evolution.png differ diff --git a/source/posts/minimum_demand_SWIS_2023.org b/source/posts/minimum_demand_SWIS_2023.org new file mode 100644 index 0000000..2400e57 --- /dev/null +++ b/source/posts/minimum_demand_SWIS_2023.org @@ -0,0 +1,30 @@ +#+date: <2023-12-23 Sat 18:38> +#+filetags: :analysis:visualisation:energy_transition: +#+title: How the energy transition is replacing daytime electricity generation. + +#+BEGIN_PREVIEW +In a process labelled the energy transition, traditional sources for +electricity generation are being replaced by renewable energy sources +like wind and solar. To the extent this happens 'behind the meter', +i.e. where the user of the electricity is generating & consuming it on +their own premises like with rooftop solar panels, it results in the +metered demand on the electricity grid not being aware of the demand +that is met by on-site generation. Given how prevalent solar panels +have become on Western Australian roofs over the past 10 years, it +might not come as a surprise this has resulted in the remaining demand +on the grid to come down on very sunny days around noon. This +reduction has been quite rapid for a couple of years, but seems to +have slowed this year and last, as seen in the graph below. + +#+attr_html: :class img-fluid :alt Evolution of minimum demand on the Western Australian SWIS +[[file:../assets/SWIS_minimum_demand_evolution.png]] + + +#+END_PREVIEW + +To create the graph, I calculate the 14-day running minimum of the daytime +demand on the grid, starting back in 2014. For each year, the minimum that was reached is +shown, as is the year-on-year difference between them. Since 2016, +these minima have always been achieved during the Australian springtime. The 2015 +minimum jumps out, as it happened during summer and it took another 2.5 years to equal it again - I imagine it is linked to an outage of an +industrial consumer of electricity.