- Joined
- 26 March 2014
- Posts
- 19,744
- Reactions
- 12,091
Hey bas, read post 7318.Excellent story on the ABC at the current state of play with solar power.
Essentially roof top solar is killing everything - including large scale solar farms.
The essential need now is ways to smooth, move and store the excess renewable energy being produced.
Rooftop solar 'cannibalising' power prices as Australian generators pay to stay online
By energy reporter Daniel Mercer
Posted 33m ago33 minutes ago
View attachment 162823
Australia is leading the world in the adoption of rooftop solar.(Reuters: Tim Wimborne, file photo)
Help keep family & friends informed by sharing this article
Link copied
Daytime power prices are plunging into negative territory – meaning generators have to pay to produce – as renewable energy increasingly cannibalises the market, according to experts.
Key points:
- Wholesale power prices are increasingly turning negative at times of high solar output
- Observers say rooftop solar is "cannibalising" electricity prices and hitting large-scale solar hard
- There are calls for storage and greater daytime demand to help soak up solar production
As the share of green energy in Australia's biggest electricity system momentarily reached a record high of 70 per cent this week, energy software company Gridcog said "price cannibalisation" was becoming an increasingly common phenomenon.
Wholesale power prices in the national electricity market across the eastern states dropped to as low as -$64 per megawatt hour last Saturday, when soaring output from millions of rooftop solar panels flooded into the system.
The phenomenon is particularly pronounced in mild, sunny conditions and especially on weekends, when solar output is at its highest but demand for electricity is relatively low.
In a post to its social media followers, Gridcog said large-scale solar farms were, perversely, being hit hardest by the trend because rooftop solar was generally beyond the control of the market operator.
It noted utility-scale solar plants were having to pare back generation or switch off entirely during such periods to avoid having to pay to maintain production.
"Price cannibalisation is a major emerging feature of the energy transition," the company wrote on LinkedIn.
Generators pay to stay on as dominant rooftop solar 'cannibalises' electricity prices
The rise of rooftop solar in Australia shows no signs of slowing, bringing cheap, clean power. But the technology is also reshaping the power system in some surprising ways.www.abc.net.au