Transformer
An electrical device that changes voltage levels. Step-up transformers increase voltage for long-distance transmission; step-down transformers decrease it for distribution and household use.
Why It Matters
Transformer shortages (lead times of 18-24+ months) are driving some of the cost increases in utility rate cases. They're also a bottleneck for solar interconnection in some areas.
Related Topics
Related Terms
Distribution Charges
The portion of your electric bill covering the cost of the local power lines, transformers, and infrastructure that deliver electricity from substations to your home.
Transmission Charges
Fees for transporting electricity over high-voltage power lines from generation plants to local distribution substations. Usually a smaller portion of residential bills.
Interconnection
The process of connecting your solar system to the utility grid, requiring utility approval and inspection.