Peak XV Partners Backs Indian Startup C2i to Tackle Power Inefficiency in AI Data Centers

Peak XV Partners has led a Series A investment in C2i Semiconductors, an Indian startup developing plug‑and‑play, system‑level power solutions for AI data centers. C2i aims to reduce the 15%‑20% energy loss that occurs when high‑voltage power is stepped down to GPUs, potentially cutting overall power consumption by about 10%. The company, founded by former Texas Instruments executives, is preparing its first silicon designs for validation with data‑center operators and hyperscalers. The investment reflects growing concern that power, rather than compute, is becoming the primary constraint on scaling AI infrastructure.

Background on Power Constraints in AI Data Centers

As artificial intelligence workloads expand, the amount of electricity required to run data centers is rising sharply. Industry forecasts suggest that data‑center power demand could increase dramatically over the next several years, making energy efficiency a critical factor for profitability. A major source of inefficiency lies in the conversion of high‑voltage electricity to the lower voltages needed by GPUs, a process that currently wastes roughly 15% to 20% of the energy supplied.

C2i Semiconductors' Solution

C2i Semiconductors, founded in 2024 by former Texas Instruments power executives, is addressing this bottleneck with a redesign of the power‑delivery architecture. The company’s “grid‑to‑GPU” system integrates power conversion, control, and packaging into a single, plug‑and‑play platform that spans the data‑center bus to the processor itself. By treating these elements as an integrated platform, C2i estimates it can cut end‑to‑end power losses by around 10%, equating to roughly 100 kilowatts saved for every megawatt consumed. These efficiency gains translate directly into lower cooling costs, higher GPU utilization, and improved overall economics for large‑scale AI infrastructure.

Funding and Strategic Backing

Peak XV Partners, which split from Sequoia Capital in 2023, led a Series A round that raised $15 million for C2i, with participation from Yali Deeptech and TDK Ventures, bringing the startup’s total funding to $19 million. Managing director Rajan Anandan highlighted that after the capital outlay for servers and facilities, energy costs dominate ongoing expenses, making even modest efficiency improvements highly valuable. He noted that a 10% to 30% reduction in energy costs could represent “tens of billions of dollars.”

Technology Roadmap and Market Validation

C2i expects its first two silicon designs to return from fabrication between April and June, after which the company plans to validate performance with data‑center operators and hyperscalers that have expressed interest. The Bengaluru‑based firm has assembled a team of about 65 engineers and is establishing customer‑facing operations in the United States and Taiwan to support early deployments. The company’s approach requires coordination of silicon, packaging, and system architecture—a capital‑intensive effort that few startups attempt.

Industry Implications and Outlook

The investment underscores a broader shift in the AI infrastructure ecosystem, where power efficiency is becoming as important as compute performance. It also reflects confidence in India’s growing semiconductor design capabilities, with government incentives and a deep talent pool lowering the barriers to creating globally competitive chip products. While execution risks remain, C2i’s upcoming silicon validation and early customer trials will provide a clear test of its thesis within the next six months.