Engineering Knowledge Hub

Practical engineering insight for South African infrastructure projects.

Technical explainers written to make electrical, energy and infrastructure decisions easier to understand—from MV distribution and transformers to project design and delivery.

Latest Technical Article

Engineering explained without losing the engineering.

11kV versus 22kV 100kVA transformer manufacturing cost comparison

17 September 2026 · Electrical Engineering · Transformers

100 kVA 11kV vs 22kV Transformer: Why Does the 22kV Unit Cost More?

The kVA is identical, so why can a 22kV transformer cost more? We break down winding current, turns, insulation, bushings, clearances, tap changers, testing and realistic estimating allowances.

Read the full comparison →