Rapid rooftop PV uptake in Southwest Australia is shifting demand profile

Share on facebook
Share on twitter
Share on linkedin
Share on reddit
Share on email
AEMO expects an on-going strong growth in rooftop installations. Credit: ARENA

The rapid uptake of rooftop solar in southwest Australia is significantly shifting peak demand periods to later in the day as the sun sets, according to analysis from the Australian Energy Market Operator (AEMO).

Estimates suggest that rooftop PV reduced 2016/17’s peak demand in the South West Interconnected System (SWIS) by 7.2% to 3,670MW on 1 March this year, which is the lowest summer peak in eight years.

The estimates were part of AEMO’s 2017 Electricity Statement of Opportunities (ESOO) for the Wholesale Electricity Market (WEM).

AEMO’s executive general manager, Western Australia, Cameron Parrotte, said: “The rapid adoption of rooftop solar is not only slowing annual operational consumption growth but also eroding the mid-day grid demand and shifting peak demand to later in the day.”

The operator also expects an on-going strong growth in rooftop installations and further shrinking of electricity demand in the middle of the day.

Parrotte said this would result in “in a rapid increase in demand in the lead up to the evening peak once the sun sets.”

The resulting ‘duck curve’ in the load profile then requires generation to start up and shut down more often and in shorter spaces of time. AEMO said this could mean thermal generators face higher operational costs as well as reduced demand.

“Market and system reforms will need to be put in place to maintain system security and enable this transition at the lowest cost to consumers,” added Parrotte.

The comments come at a critical point in Australia’s power history following the release of Finkel Review on the energy market last week, which recommends adopting a Clean Energy Target (CET) and introducing energy security obligations for new large-scale renewable energy plants.

Read Next

PV Tech Premium
July 23, 2021
A reduction in deployment costs combined with technology gains mean solar-plus-storage is an increasingly attractive option for off-grid mining operations looking to cut emissions. Jules Scully looks at successful case studies and the opportunity ahead.
July 16, 2021
The new chief of the Australian Energy Market Operator (AEMO) has said he wants the country’s grids to be capable of handling 100% renewables by 2025.
July 14, 2021
Maxeon Solar Technologies has expanded its AC Energy Solutions portfolio with the launch of a new module for the rooftop solar market.
July 13, 2021
Solar PV capacity in Asia Pacific could triple to 1,500GW by 2030, with China driving deployment and Indonesia set to be the region’s fastest-growing market, according to Wood Mackenzie.
July 13, 2021
A renewable energy hub consisting of up to 50GW of solar and wind generation for the production of green hydrogen is being planned for Western Australia.
July 12, 2021
Investor confidence in the Australian clean energy market has been dented by “unhelpful and unpredictable” government interventions.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
August 19, 2021
At 9am (PT) | 6pm (CEST)
Solar Media Events
August 25, 2021
Solar Media Events
October 6, 2021
Solar Media Events
October 19, 2021