en.Wedoany.com Reported - Australia's net-zero transition faces transmission capacity bottlenecks, and Dynamic Line Rating (DLR) technology is emerging as a key means to unlock grid potential. The country remains heavily reliant on fossil fuels, which accounted for 61% of total electricity generation in 2025. However, power sector emissions have already fallen 23% from their 2009 peak. Australia aims to reduce emissions by 70% by 2035 and achieve net-zero emissions by 2050.
According to the latest quarterly report from the Australian Energy Market Operator (AEMO), average total electricity generation in the National Electricity Market (NEM) was 25,064 megawatts (MW) for the quarter ending December 2025. Renewable energy (including storage) accounted for 51% of total supply for the first time, up from 46% in the same period the previous year. Annual average renewable energy generation increased by 1,256 MW, with wind power increasing by 932 MW (an increase of nearly 3%) and grid-scale solar increasing by 324 MW (an increase of 15%). Total generation capacity grew by more than 3%, but demand over the same period only increased modestly by 177 MW (an increase of less than 1%). Despite the growth in renewables, transmission bottlenecks have become a major factor limiting the connection of new generation projects to the grid. The report notes that network curtailment and economic load shedding increased year-on-year, reducing the potential growth in grid-scale solar generation by 312 MW. Average curtailment of grid-scale solar due to network constraints increased by 21% from 176 MW in the same quarter from 2024 to 2025 to a record high of 213 MW. As of the end of 2025, over 63 gigawatts (GW) of new capacity was in the connection process, a 30% increase from less than 50 GW in the same period the previous year.
Australia's unique geography, with long distances between load centers and renewable energy resources, presents multiple challenges for developing new transmission assets, including regulatory hurdles and community opposition. The Australian government provides financing through the "Rewiring the Nation" plan via the Clean Energy Finance Corporation (CEFC). However, the 2026 Integrated System Plan (ISP) currently being developed by AEMO indicates that the current ISP, released in 2024, forecasts the need to build approximately 4,581 kilometers of new transmission lines to meet 2030 targets. Investment in New South Wales alone amounts to A$4.7 billion. The issue of negative electricity prices is also intensifying, occurring about a quarter of the time in Victoria and New South Wales. AEMO predicts that due to significant delays in energy transition infrastructure projects, curtailment rates could reach 35-65% by 2027.
Grid Enhancing Technologies (GETs) can immediately increase capacity without building new lines. Traditional Ambient Adjusted Rating (AAR) methods based on weather stations do not fully account for actual conductor conditions, particularly neglecting the cooling effect of wind and ultra-local influences within critical spans. Dynamic Line Rating (DLR) technology, in contrast, relies on real-time data of actual conductor conditions. Ampacimon has developed patented sensor technology equipped with accelerometers that directly measure conductor vibration frequency caused by wind or thermal convection, accurately assessing sag, vertical wind speed, and temperature, with sag measurement accuracy within 20 centimeters. The system is fully autonomous and, when combined with weather forecasts, can predict line capacity hours in advance, influencing NEM market dynamics.
The Australian government, through the Department of Climate Change, Energy, the Environment and Water, is investing A$30 million under the Grid Enhancing Technologies Grants Program, which runs from 2025-26 to 2028-29. AEMO is already using real-time DLR data for selected lines in its dispatch process. DLR systems can provide up to 40% additional capacity. Smart line sensors can be installed on energized lines up to 500 kV via drones, eliminating lengthy outage planning processes. The sensors are induction-powered and are maintenance-free devices. TenneT, Germany's largest transmission system operator (TSO), stated that German system operators spent approximately €2.8 billion on redispatch measures to stabilize the grid in 2024. However, in 2023 alone, the use of DLR saved German TSOs around €1 billion in redispatch costs. Australia may require a similar policy approach to ensure consumers fully benefit from DLR.
This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com
