Direct current (DC) technology is shifting from a niche application to a core strategy for powering AI data centers and other energy-intensive infrastructure. A new report from ABB and Boston Consulting Group (BCG) argues that the future of electrical systems will not be a choice between alternating current (AC) and direct current, but rather a hybrid approach that leverages the strengths of both. The report identifies AI data centers as one of the most immediate drivers of this transition, with 800 VDC distribution emerging as the defining architecture for next-generation AI infrastructure.

What Is Direct Current and Why Does It Matter for AI?

Most buildings and power grids today rely on alternating current, which has been the standard for over a century. However, many of the fastest-growing technologies, including solar panels, batteries, electric vehicles, and AI data centers, operate natively on direct current. This creates an inefficiency: power must be converted multiple times as it moves from generation to storage to consumption. Each conversion step wastes energy. By using direct current throughout the system, operators can eliminate unnecessary conversion losses and improve overall efficiency.

For AI data centers specifically, the challenge is acute. As artificial intelligence workloads continue to increase power density requirements, conventional electrical architectures are reaching their practical limits. The ABB and BCG report finds that 800 VDC distribution is emerging as the defining architecture for next-generation AI infrastructure, enabling operators to maximize compute capacity within constrained grid connections while improving energy efficiency.

"In a world that will require more power while operating within the constraints of existing infrastructure, enabling broader adoption of DC systems will require stronger collaboration among business leaders, policymakers and technology stakeholders, as well as greater attention to the role DC can play," said Morten Wierod, Chief Executive Officer of ABB.

Morten Wierod, Chief Executive Officer of ABB

What Are the Main Barriers to Adopting Direct Current Technology?

Despite the efficiency benefits, DC adoption has been slow. The ABB and BCG report addresses several long-standing misconceptions that have hindered deployment. Many concerns around scale, safety, and economics reflect outdated assumptions rather than the capabilities of today's technologies. Instead, the report identifies two primary challenges that need urgent attention: fragmented standards and a shortage of DC-specific skills in the workforce.

Without common standards across industries and regions, companies struggle to implement DC systems at scale. Similarly, the lack of trained professionals who understand DC infrastructure means that even when the business case is clear, organizations lack the expertise to deploy and maintain these systems effectively. Addressing these barriers will be critical for accelerating the transition.

How to Prepare for the Shift to Direct Current Infrastructure

• Establish Common Standards: Industry leaders and policymakers must work together to develop harmonized DC standards that allow systems to interoperate across different vendors and regions, reducing fragmentation and enabling economies of scale.
• Develop DC-Specific Workforce Skills: Educational institutions and companies need to invest in training programs that equip engineers and technicians with the knowledge required to design, install, and maintain DC systems in data centers and other facilities.
• Evaluate Hybrid AC/DC Architectures: Organizations should assess whether hybrid systems combining AC and DC technologies make sense for their specific applications, particularly if they operate AI data centers, manufacturing facilities, or commercial buildings with significant renewable energy integration.
• Collaborate on Implementation: Business leaders, policymakers, and technology stakeholders must increase collaboration to share best practices, reduce deployment risks, and accelerate the transition to DC-based infrastructure.

Beyond Data Centers: Where Else Is Direct Current Gaining Traction?

While AI data centers are the most immediate driver of DC adoption, the technology has applications across multiple industries. Automation-intensive manufacturing facilities can benefit from lower conversion losses and more effective integration of onsite renewables and storage. Commercial buildings can use DC systems or subsystems to enhance operational flexibility and reduce energy waste. Over the longer term, residential buildings may also adopt DC technologies as the cost of implementation decreases and workforce expertise grows.

ABB has been pioneering DC solutions for more than 25 years and holds more than 700 DC-related patents. The company has already demonstrated the energy-saving potential of DC in maritime applications, achieving fuel savings of up to 27 percent with DC-based onboard power systems. ABB is now expanding DC distribution to electric transport, microgrids, and data centers, while also exploring applications in low-carbon aluminum production and green hydrogen generation.

The decisions made by business leaders and policymakers over the next two to three years will be critical in determining who shapes the transition to hybrid AC/DC power systems and who inherits the consequences of inaction. As AI computing continues to expand and renewable energy sources proliferate, the case for direct current infrastructure becomes increasingly compelling. The technology is ready; what remains is the coordination, standardization, and workforce development needed to deploy it at scale.