102 - South Australia's wholesale price changes in 2017

This week, a series on South Australia - all using data from Global Roam's excellent NEM Review software, which you can purchase here.

Today's chart shows the daily minimum, mean and maximum (the chart cuts off at $1,000 per megawatt hour to give us a better view of what's going on at lower price levels) wholesale electricity price in South Australia. Wholesale isn't the whole story - you also pay network, retail and environmental charges on your bill, and often fluctuations in these tell a more complete story about what you pay every quarter. 

The chart below shows how there's been a slight dip as wind power has increased output in July (as you can see in yesterday's chart), and how prices were higher when gas dominated the fuel mix in the state. You can also see the prevalence of price spikes above $1k/MWh in summer, which is pretty normal.

081 - Wholesale price history, NEM

A simple monthly average by state, showing wholesale electricity price. The trends are clear, and there's not a huge amount of variation between the states.

004 - Price Spikes vs RE Power percentage

There's been plenty of coverage of electricity prices and regional electricity issues - I thought I'd draw up the number of price spikes where trading interval (half-hour average price) was above $5,000 per megawatt hour over the past decade (ish), and compare it to the (still relatively small) penetration of non-hydro renewable (solar, wind) in the National Electricity Market. (Data extracted from the excellent NEM-Review software)

003 - NEM Pool prices over the past ten years

Wholesale electricity price, just one component of many that make up your retail bill, is separate for each region in the National Electricity Market - the chart  below shows average quarterly pool price over the past yen years. Courtesy of NEM-Review.