DayOne signs 500MW CRESS deal with Malaysia’s Tenaga Nasional Berhad

DayOne Data Centers has entered a corporate renewable energy supply scheme (CRESS) agreement with Tenaga Nasional Berhad (TNB) to secure up to 500MW of renewable energy over 21 years for the company’s operations in Malaysia.

DayOne is the first company to sign a bilateral energy supply contract (BESC) under Malaysia’s national CRESS framework.

Malaysia’s Ministry of Energy Transition and Water Transformation (PETRA) introduced CRESS to facilitate direct access for medium and high-voltage corporate consumers to clean energy via TNB’s grid system.

It is part of the nation’s strategy to develop a more sustainable energy landscape by simplifying clean energy purchasing processes for businesses.

Renewable electricity will be sourced from new solar facilities developed by TNB Renewables, TNB’s fully owned subsidiary.

Tenaga Nasional Berhad president/CEO Datuk Ir. Megat Jalaluddin Megat Hassan stated: “As the first CRESS agreement to deliver up to 500 megawatts of green energy, this partnership is a powerful signal of how a strategic collaboration can unlock reliable and scalable clean energy solutions for Malaysia’s most demanding digital infrastructures, including hyperscale data centres.

“TNB is proud to lead in this transition — not only by supplying renewable energy, but by building the grid resilience, energy infrastructure and digital backbone that enable AI, cloud and high-performance workloads.”

DayOne currently operates two hyperscale campuses within Malaysia’s Nusajaya Tech Park and Kempas Tech Park.

The company aims to implement renewable energy throughout its operations and minimise Scope 1 and 2 emissions [from sources it owns or controls, and those which are a consequence of its activities but occur from sources not owned or controlled by it] while also assisting its customers in decarbonising their digital infrastructure.

DayOne CEO Jamie Khoo stated: “This partnership with TNB marks a bold step forward in our decarbonisation journey. It reflects the ambitious collaboration needed to power the AI-driven digital economy sustainably — and to do so at scale.

“We are proud to lead by example in Malaysia through the country’s first CRESS agreement. Sustainability is core to how we build, operate and grow. At DayOne, we are not only transitioning our campuses to renewable energy — we are working to embed ESG [environmental, social and governance] principles into every part of our value chain.”

In October 2024, DayOne signed its fourth electricity supply agreement (ESA) with TNB alongside a memorandum of understanding (MoU) under the Green Lane Pathway initiative and One-Stop Center (OSC) for data centres.

In May 2025, ACWA Power signed an MoU and strategic partnership agreements with prominent Malaysian entities, including TNB, for investments totalling up to $10bn.