The National Renewable Energy Laboratory (NREL), in partnership with the Office of Electricity (OE), has published a report detailing the number and capacity of transformers in the U.S., their current age profile, and future demand trends. Titled Distribution Transformer Demand: Understanding Demand Segmentation, Drivers, and Management Through 2050, this report offers a national estimate to help manufacturers and utilities assess transformer needs and manage demand.
The study identifies two primary reasons for the rising demand for transformers: the influx of new customers and the aging of existing transformers. Specifically, NREL estimates there are 60–80 million distribution transformers, with a capacity of 2.5 to 3.5 TVA (over 2.5 to 3.5 billion kilowatts). Notably, approximately 55% of these transformers are over 33 years old and nearing the end of their operational life. This indicates that more than half of the transformers are becoming unreliable and may fail at any time.
The report emphasizes the necessity of not only building new transformers but also replacing aging units. It warns that both the aging of assets and increased loading are likely to accelerate failure rates, especially after 2030.
That's to say, distribution transformer's market is sitll so huge in USA.And the related demands will increase.
