The Transformer monitoring systems market growth in 2026 are used to assess the operating condition, performance, and health of electrical transformers. These systems collect information about parameters such as temperature, transformer oil condition, dissolved gases, moisture, and partial discharge. By identifying abnormal operating conditions early, monitoring technologies help utilities and industrial operators reduce unexpected equipment failures, improve maintenance planning, and extend transformer service life.
According to Fortune Business Insights, the global transformer monitoring system market size was valued at USD 2.97 billion in 2025. The market is projected to grow from USD 3.25 billion in 2026 to USD 6.61 billion by 2034, exhibiting a CAGR of 9.28% during the forecast period. North America dominated the market with a revenue share of 32% in 2025.
The transformer monitoring system market includes established electrical equipment manufacturers and specialized technology providers. Key companies supplied for this market include: