Kazakhstan: TotalEnergies Takes Final Investment Decision for Its Giant Wind and BESS Project

Key Terms

battery energy storage system technical

A battery energy storage system is a device that stores electricity for later use, much like a rechargeable battery for a phone or laptop. It allows energy generated during times of low demand or from renewable sources to be saved and released when needed, helping to balance supply and demand. For investors, it represents a way to support reliable energy flow and capitalize on the increasing demand for flexible, clean power solutions.

bess technical

BESS stands for Battery Energy Storage System, a technology that stores electricity for later use. Think of it as a large rechargeable battery that can hold excess power generated during times of low demand and release it when usage is high, helping balance supply and demand. This is important for investors because it supports the stability of energy grids, enables the integration of renewable sources, and can create new opportunities for profitability in the energy market.

power purchase agreement financial

A power purchase agreement (PPA) is a long-term contract in which a buyer agrees to purchase electricity from a generator at an agreed price and schedule, similar to a multi-year subscription for power or a long-term lease of an energy source. Investors care because PPAs provide predictable revenue and cash flow for the generator, reduce market-price exposure, and shift credit and performance risk to the buyer, all of which affect valuation, financing and perceived investment stability.

ppa financial

A PPA (Power Purchase Agreement) is a long-term contract in which a buyer agrees to purchase electricity from a specific generator at agreed prices and terms. Think of it like a multi-year subscription for power that locks in supply and cost, giving the seller steady revenue and the buyer predictable energy costs. Investors care because PPAs reduce revenue uncertainty, help projects get financed, and shift exposure to energy price or supply risks, affecting a company’s cash flow and valuation.

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• The Mirny project combines 1 GW of wind capacity with 600 MWh of BESS.
• It will supply renewable electricity to ~1 million people.
• The project will reach full capacity in 2029.

PARIS--(BUSINESS WIRE)-- TotalEnergies (Paris:TTE) (LSE:TTE) (NYSE:TTE) has taken the Final Investment Decision and secured financing for the Mirny onshore wind and Battery Energy Storage System (BESS) project in Kazakhstan. Located in the southeast of the country, Mirny should generate 100 TWh of renewable electricity over 25 years, enough to supply about 1 million people in Kazakhstan. The electricity produced will be sold to the Government of Kazakhstan under a 25-year Power Purchase Agreement (PPA) signed in 2023. The project’s investment amounts to $1.2 billion, with about 75% externally financed.

A flagship project for Kazakhstan

The Mirny project consists of a 1 GW onshore wind farm totaling 150 turbines, combined with a 600 MWh battery energy storage system supplied by TotalEnergies’ wholly owned affiliate Saft, for a reliable power supply to the national grid. The inclusion of a storage facility will enhance grid stability and represents a significant upgrade to the country's energy infrastructure. TotalEnergies holds 60% of Mirny, jointly with its partners Samruk Energy and KazMunayGas (20 % each).

Financing secured from international lenders

TotalEnergies and its partners signed yesterday a Common Terms Agreement (CTA) with an international lending consortium, securing a financing framework for the Mirny project. The lending consortium includes EBRD, Proparco, DBK, DEG, Société Générale, QNB Group, China Construction Bank, and Standard Chartered.

"We are delighted to launch one of Kazakhstan’s largest renewable energy initiatives to date, thereby contributing to the country’s target of increasing the share of renewables in electricity generation to 15% by 2030. We look forward to advancing construction of the Mirny project alongside our partners and in cooperation with the Kazakhstani authorities,” said Olivier Jouny, SVP Renewables at TotalEnergies. “This 1 GW onshore wind farm will also contribute to the 9 GW renewables portfolio that we are combining with Masdar through a 50/50 joint venture across nine Asian countries, including Kazakhstan,” he added.

About TotalEnergies in Kazakhstan
TotalEnergies has been present in Kazakhstan since 1993, deploying a multi-energy strategy that integrates hydrocarbon production with renewable development. The Company is a major shareholder (16.81%) in the North Caspian Project, ensuring the country’s economic stability, while simultaneously leading the renewable sector with 128 MW of operational solar assets. This commitment is further reinforced by the development of the 1 GW Mirny wind and BESS project, a technological benchmark featuring Kazakhstan’s first grid-scale battery system (600 MWh), designed to directly support the nation’s 2060 net zero ambition.

TotalEnergies and electricity
TotalEnergies is building a competitive portfolio that combines renewables (solar, onshore wind, offshore wind) and flexible assets (CCGT, storage) to deliver clean firm power to its customers. At the beginning of 2026, TotalEnergies has more than 34 GW of gross renewable power generation capacity and aims to achieve over 100 TWh of net electricity production by 2030.

About TotalEnergies
TotalEnergies is a global integrated energy company that produces and markets energies: oil and biofuels, natural gas and green gases, renewables and electricity. Our more than 100,000 employees are committed to provide as many people as possible with energy that is more reliable, more affordable and more sustainable. Active in about 120 countries, TotalEnergies places sustainability at the heart of its strategy, its projects and its operations.

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Cautionary Note
The terms “TotalEnergies”, “TotalEnergies company” or “Company” in this document are used to designate TotalEnergies SE and the consolidated entities that are directly or indirectly controlled by TotalEnergies SE. Likewise, the words “we”, “us” and “our” may also be used to refer to these entities or to their employees. The entities in which TotalEnergies SE directly or indirectly owns a shareholding are separate legal entities. This document may contain forward-looking information and statements that are based on a number of economic data and assumptions made in a given economic, competitive and regulatory environment. They may prove to be inaccurate in the future and are subject to a number of risk factors. Neither TotalEnergies SE nor any of its subsidiaries assumes any obligation to update publicly any forward-looking information or statement, objectives or trends contained in this document whether as a result of new information, future events or otherwise. Information concerning risk factors, that may affect TotalEnergies’ financial results or activities is provided in the most recent Universal Registration Document, the French-language version of which is filed by TotalEnergies SE with the French securities regulator Autorité des Marchés Financiers (AMF), and in the Form 20-F filed with the United States Securities and Exchange Commission (SEC).

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TotalEnergies Contacts
Media Relations: +33 (0)1 47 44 46 99 l presse@totalenergies.com l @TotalEnergiesPR
Investor Relations: +33 (0)1 47 44 46 46 l ir@totalenergies.com

Source: TotalEnergies SE