Power After Sunset: NSW's Record-Breaking Tender for Round-the-Clock Renewable Energy
New South Wales, Australia's largest coal-producing state, is making a bold move to secure reliable renewable energy. The state government has announced its biggest ever generation tender, specifically designed to procure power that can be delivered when solar panels aren't generating electricity—essentially, overnight and during cloudy periods. This initiative marks a significant shift away from coal dependency, focusing on technologies like solar-battery hybrids and wind energy, complemented by additional storage solutions. Below, we answer key questions about this groundbreaking tender.
What exactly is this tender and why is it significant?
This tender is New South Wales' largest-ever procurement of electricity generation capacity. It's significant because it prioritizes technologies capable of supplying power when the sun isn't shining—a critical requirement for a grid increasingly reliant on solar energy. The tender calls for projects that can deliver electricity during evening peaks and overnight, essentially filling the gap left by solar's intermittency. By favoring solar-battery hybrids and wind farms, the state is signaling a strategic move away from coal-fired baseload power. The tender also seeks additional energy storage, such as grid-scale batteries or pumped hydro, to further enhance reliability. This marks a major step in NSW's transition to a cleaner, more flexible energy system.
Which technologies will be favored in this tender?
The tender explicitly leans toward solar-battery hybrid systems and wind energy projects. Solar-battery hybrids combine photovoltaic panels with on-site battery storage, allowing excess daytime generation to be stored and dispatched after dark. Wind farms are also favored because they often produce power at night when solar is offline. Additionally, the state is seeking extra stand-alone storage projects, including large-scale batteries and pumped hydro, to complement these generation assets. This combination is designed to ensure a steady, reliable power supply regardless of the time of day or weather conditions. The goal is to minimize reliance on fossil fuel back-up and accelerate the transition to renewables.
How does this tender address the challenge of solar intermittency?
Solar power is abundant during daylight but drops to near zero at sunset, creating what's known as the 'duck curve'—a sharp ramp-up in demand in the evening. This tender tackles that problem head-on by requiring projects to deliver electricity specifically during those high-demand, low-solar periods. Solar-battery hybrids can charge batteries during the day and discharge in the evening, while wind farms often generate more power at night. The tender also mandates that projects include or be co-located with sufficient storage to ensure dispatchability. By prioritizing these technologies, NSW aims to balance the grid, reduce the need for coal or gas peaker plants, and make renewable energy a reliable 24/7 option.
What role does energy storage play in this tender?
Energy storage is a linchpin of the tender. While solar-battery hybrids already include storage, the state is also calling for separate, large-scale storage projects—such as grid-connected batteries or pumped hydro schemes. These will act as massive reservoirs to soak up excess renewable energy and release it when needed. Storage enables the grid to handle fluctuations in generation and demand, smoothing out peaks and valleys. In this tender, storage ensures that the new wind and solar capacity can be firmed up to provide reliable power even during extended cloudy or calm periods. Without storage, renewable energy's variability would still require fossil fuel back-up; with it, NSW can push toward a coal-free future.
Why is Australia's largest coal state pursuing this renewable path?
Despite being historically reliant on coal-fired power, New South Wales recognizes the urgent need for decarbonization and grid modernization. Aging coal plants are becoming less reliable and more expensive to maintain, while renewable energy costs continue to fall. The state government aims to reduce emissions, meet climate targets, and attract clean energy investment. This tender is part of a broader strategy to transition the electricity sector while maintaining affordability and reliability. By investing in solar-battery hybrids and wind plus storage, NSW can replace retiring coal capacity with cleaner, more flexible sources. It also positions the state as a leader in the national energy transformation, setting a precedent for other regions.
What are the implications for Australia's energy market and future renewable projects?
This tender could reshape the National Electricity Market (NEM) by demonstrating that large-scale renewables can reliably meet demand around the clock. It will likely spur further investment in hybrid projects and storage technologies across Australia. The emphasis on dispatchable renewable power sends a strong signal to developers that projects combining generation and storage are highly valued. Success could accelerate the retirement of coal plants elsewhere, as other states adopt similar approaches. Additionally, it may drive down costs for solar-battery and wind-storage systems through economies of scale. Ultimately, this tender represents a crucial step toward a fully renewable, reliable electricity grid in Australia, proving that clean power can be available even when the sun don't shine.