A large-scale wind and energy storage project in Kazakhstan is moving forward, combining 1 GW of onshore wind capacity with a 600 MWh battery energy storage system (BESS) and significant grid infrastructure development.

The Mirny project, being developed by TotalEnergies alongside local partners, represents one of the most substantial renewable energy developments in Central Asia. The project is designed not only to generate electricity but also to strengthen the country’s transmission network and substation capacity.

A key component of the development includes the construction of three 500 kV transmission lines, along with upgrades and expansion of high-voltage substations, ensuring that electricity generated from the wind farm can be efficiently transmitted across the national grid.

This integrated approach reflects a growing trend in large-scale renewable projects, where generation, storage, and grid infrastructure are developed together to improve overall system stability and reliability.

With a total investment of approximately $1.2 billion, the project highlights the scale of infrastructure required to support renewable energy expansion. Construction is underway, with full commissioning expected by 2029.

The project will operate under a 25-year power purchase agreement (PPA), supporting long-term integration into Kazakhstan’s energy system and providing a stable framework for electricity delivery.

Once operational, the Mirny project is expected to supply renewable electricity to around 1 million people, contributing to national targets to increase the share of renewables in the energy mix.

The inclusion of a large-scale battery storage system will help manage the variability of wind generation, providing flexibility and balancing services to the grid.

Crucially, the associated substation upgrades and high-voltage transmission infrastructure will play a central role in ensuring that this capacity can be delivered reliably, reinforcing the grid and supporting future renewable integration.

The Mirny development illustrates how modern energy projects are evolving beyond generation assets, with substations and transmission systems becoming essential components of delivering resilient and scalable power networks.

Source: renews.biz