Australian grid regulator releases blueprint for integrating 75% green electricity

first_imgAustralian grid regulator releases blueprint for integrating 75% green electricity FacebookTwitterLinkedInEmailPrint分享Renew Economy:The Australian Energy Market Operator has laid out an action plan to accommodate levels of up to 75 percent “instant” penetration of wind and solar in Australia’s main grid by 2025, saying the country had the technical know-how to cope with such a high penetration of wind and solar, but needed to urgently update the market and regulatory settings.Releasing the long-await Renewable Integration Study, a key adjunct to its 20-year blueprint for the grid transition known as the Integrated System Plan, AEMO chief executive Audrey Zibelman reinforced the widespread view that integrating very high levels of renewables is not so much a technical challenge. It’s more about updating rules and regulations to make them fit for purpose for a new system, and to add new markets to ensure the availability of essential services such as inertia and voltage. Without these changes, AEMO warns it may have to limit the contribution of wind and solar resources to 50 or 60 per cent of electricity supply at any point in time.“Australia already has the technical capability to safely operate a power system where three quarters of our energy at times comes from wind and solar energy generation,” Zibelman says in a statement accompanying the report. “However, to do so requires changes in our markets and regulatory requirements. Otherwise, AEMO will be required to limit the contribution of these wind and solar resources to 50 or 60 per cent of electricity supply at any point in time, even though they are the lowest cost way of providing electricity,” she warned.Wind and solar have recently accounted for close to 50 per cent of supply in the National Electricity Market in some trading periods (more than 50 per cent including hydro, and up to 140 per cent wind and solar in South Australia), although there have been some 5-minute intervals where wind and solar has already exceeded 50 per cent.AEMO, which is responsible for managing grid and keeping the lights on, debunks this and says there is no reason Australia cannot have a very high level of renewables: “Beyond 2025, AEMO has not identified any insurmountable reasons why the NEM cannot operate securely at even higher levels of wind and solar penetration, especially with ongoing technological advancement worldwide,” it notes.Indeed, its ISP maps out a path – mostly through infrastructure – to accommodate a 90 per cent share of renewables in Australia’s main grid by 2040.[Giles Parkinson]More: AEMO lays out “action plan” to manage 75 pct wind and solar by 2025last_img read more