Imma post some graphs now
1. From the
Australian Energy Market Commission (they make the rules for the electricity network):
Carbon price? Not a huge impact.
2. LRET and SRES are the Renewable Energy Target (ie Renewable Energy Certificates, a tradeable good created during the John Howard government to create the Mandatory Renewable Energy Target. Electricity retailers must hand over Renewable Energy Certificates to the regulator, equal to a set percentage of their sales. This creates a market where they can either generate or purchase said certificates)
Renewable schemes? Again not that big a deal. Even the state Feed-In Tarrifs (FITs) aren't adding a whole cent to costs.
By contrast, distribution pushed prices up 2 cents last year alone:
3. Here's SA specifically:
Big rises recently? Again, networks. But also notice the higher-than-average wholesale energy costs? That's coming down now thanks to wind. Previously it was all gas and coal and during high demand times they could get pretty much whatever they wanted (huge spot price peaks). Now the wind generators have cut that down, and they've also led to Alinta reducing its coal plant output to October to April. Wind is actually bringing down wholesale energy costs, which is partly or entirely compensating for rising network costs.
4. A look at international comparisons (from
here):
Again, look at our bloody network costs. Specifically, look how they've boomed. Look also at the change rates in countries with high renewable penetration like Denmark and Spain and Germany. Compare them to countries reliant on fossil fuels like South Korea, Thailand, Poland. Look at Spain's energy costs having come down due to renewables. Look at rising energy costs in some other countries. The choice isn't "prices go up with renewables" or "prices stay down with fossil fuels" because
gas and coal prices have pushed up energy costs for countries reliant on them anyway.
Australia's black coal generators have so far been able to operate with long term protected supply contracts that date back to before privatisation. As those contracts are renegotiated, they're now having to compete with international demand like everyone else, pushing coal prices up. As more gas export hubs are built in Australia, what will happen to gas supply costs for Australian electricity? They'll double, conservatively.
Get ready, without substantial investment in renewables, for Australian electricity costs to start rising due to energy costs, on top of our high network costs.