Quantum computing could reduce emissions without major power demand

Quantum computing could help reduce carbon emissions in some industries by enabling breakthroughs in batteries, carbon capture, and chemistry, a BCG study finds. If fully adopted, quantum-enabled tech could prevent 3 to 7 billion metric tons of emissions per year. However, because industrial gear gets replaced slowly, only 10% to 15% of that reduction is likely before 2040. Quantum's electricity use should stay far below that of AI systems.

• Quantum could prevent up to 7 billion tons of emissions yearly
• Only a fraction of potential savings likely by 2040
• Quantum computers would use less energy than current AI data centers
• Roughly 230-1,400 quantum machines could meet 2040 global demand
• Full-scale quantum devices may draw about 1 megawatt each