Grenergy unveils 2023-26 plans including ‘world’s largest’ 4.1GWh Chile BESS project

LinkedIn
Twitter
Reddit
Facebook
Email

Spain-based developer and IPP Grenergy has detailed its investment plans for 2023-2026, totalling US$2.6 billion including what it claimed is the ‘largest BESS in the world’ in Chile.

According to its Strategic Plan 2023-2026, the IPP will commit US$2.6 billion to these expansions, with US$1.5 billion allocated to solar PV and US$800 million to energy storage. Of its three major operational markets – the US, Europe and Latin America – Grenergy highlighted Chile as a fulcrum for leveraging up its solar and storage businesses.

To support the planned growth, the company said that it expects to continue to expand its asset rotation model through 2026, by which it funds projects at certain points and sells them to more well-positioned investors at a later stage. The company said that it expects to sell between 350MW-450MW of solar PV capacity and 1GWh of storage capacity to the market annually, generating around US$600 million by 2026.

Earlier this year, it signed power purchase agreements (PPA) for solar projects in Chile and Spain with respective capacities of 241MW and 259MW.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Both of these are pivotal markets for Grenergy, and Chile featured most prominently in its Strategic Plan announcement. In addition to its solar PV assets in the country, which add to over 900MW across operational and pipeline projects, the company said that “Chile will be key to the company’s growth in the storage sector”.

It said that construction had begun on the Oasis de Atacama battery storage project, which will be the “largest in the world” with 4.1GWh capacity and a further 1GW of solar PV generation. The project will represent a total US$1.4 billion. It will be built in five phases and will ‘come on stream’ over the next 36 months.

“Today, Chile is a superpower in terms of the development of energy storage due to the exceptional conditions of the Atacama Desert in terms of hours of solar radiation and the particularity of the energy mix of this vast area, where the penetration of solar energy reaches 50%,” said David Ruiz de Andrés, CEO of Grenergy.

The grid-scale energy storage market in Chile is taking off with significant opportunities in the capacity market and renewable load shifting, with some 735GWh of renewable energy curtailed in the first five months of 2023 alone.

See the full version of this article on PV Tech.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.

Read Next

October 28, 2026
India’s storage market is expanding, but project delivery depends on predictable procurement, domestic manufacturing and revenue models that support investment.
October 27, 2026
India has 5.3GWh of operational battery energy storage system (BESS) capacity, with a further 185GWh of projects under development, according to Prashant Bhamu, deputy director of integrated resources planning at the Central Electricity Authority (CEA), part of the Ministry of Power.
October 27, 2026
Vanadium redox flow battery (VRFB) startup Delectrik Systems has been awarded a 20MW/120MWh project in Gujarat, India.
October 26, 2026
Ana Lía Rojas, executive director at the Chilean renewable energy and energy storage association (ACERA) gave the opening keynote of Energy Storage Summit Latin America 2026 and spoke about Chile’s current BESS market.
October 23, 2026
Tech giant Google and distributed energy resource (DER) platform Voltus have announced an expanded agreement to build a 1GW virtual power plant (VPP) in the US.