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Chile’s National Energy Commission has approved the bidding terms for its 2026 energy auction, emphasizing renewable energy and storage integration. The process includes detailed supply blocks, time-of-day segmentation, and a 15-year contract framework. This marks a significant step toward renewable capacity growth.
Chile’s National Energy Commission (CNE) has published the preliminary bidding terms for its 2026/01 energy supply tender, signaling a clear preference for renewable energy sources, particularly solar paired with storage, for the first time in this type of auction.
The tender, set to launch on July 1, 2026, will include two supply blocks totaling 2,835 GWh annually, with contracts spanning 15 years until 2044. It is designed to favor renewable projects by excluding high-emission fuels such as coal, petroleum coke, diesel, and No. 6 fuel oil. Projects must be interconnected to the National Electric System (SEN), with renewable energy and storage systems eligible to participate, provided they meet backup and participation obligations.
The auction is structured around three time-of-day segments, with the largest share allocated to daytime hours (Band B: 08:00–17:59), supporting solar generation, and evening peak hours (Band C: 18:00–22:59), facilitated by storage systems. Most supply is concentrated in Zone 2, which includes major distributors, followed by Zone 3, Zone 1, and Zone 4. A variable component of 5% of annual demand is included to account for unexpected increases, requiring bidders to demonstrate flexibility and backup capacity. The process timeline includes bid responses by October 2, 2026, with awards scheduled for January 13, 2027.
Chile’s Shift Toward Renewable Energy in Public Auction
This development demonstrates Chile’s commitment to expanding renewable capacity and integrating storage, aligning with regional decarbonization goals. The auction’s structure encourages solar-plus-storage projects, potentially accelerating the country’s clean energy transition and influencing regional renewable energy markets.
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Background and Evolution of Chile’s Energy Auctions
Chile has historically relied on diverse energy sources, with recent policy shifts emphasizing renewables. Previous auctions have included fossil fuels, but the current tender marks a strategic move to prioritize low-emission sources. The inclusion of storage signals a broader trend toward flexible, grid-friendly renewable projects, with the 2026/01 tender representing the first structured auction explicitly favoring solar and storage integration.
“The bidding terms clearly favor renewable projects, especially solar combined with storage, which is a significant step for Chile’s energy sector.”
— an anonymous researcher
Remaining Questions About Implementation and Market Impact
It is not yet clear how the reserve price will be set or how flexible project proposals must be to meet backup and storage requirements. The specific impact on existing fossil fuel plants and the extent of renewable capacity addition remain to be seen.
Next Steps for Bidders and Market Participants
Bidders will prepare proposals ahead of the October 2, 2026 deadline, with the official launch scheduled for July 1, 2026. The outcome of the auction will influence Chile’s renewable capacity expansion plans and grid integration strategies over the next two decades.
Key Questions
What types of projects are eligible to bid?
Projects must be interconnected to the National Electric System and include renewable energy sources, primarily solar, with storage systems permitted as backup, provided they meet operational and participation criteria.
Will fossil fuel plants be allowed to participate?
No. The bidding terms exclude high-emission fuels such as coal, petroleum coke, diesel, and No. 6 fuel oil from primary generation sources.
How does the time-of-day segmentation benefit renewable projects?
The segmentation allocates most supply to daytime hours, supporting solar generation, while storage can help deliver energy during evening peak hours, enhancing project revenue and grid stability.
When will the auction results be announced?
The award ceremony is scheduled for January 13, 2027, following bid evaluations and negotiations.
What is the significance of the variable component in the tender?
The 5% variable component aims to provide flexibility for unexpected demand increases, requiring bidders to demonstrate backup capacity and operational readiness.
Source: PV Magazine
