Developed countries dominate the market in the world. However recently developing countries in Asia and Latin America such as China, Brazil, etc. are expanding the markets explosively. -Annual market sizes in 2008 are $9.7 billion for power cables, $18.3 billion for breakers, $21.9 billion for transformers, $147 billion for large rotating machines (generators/motor). -In 2008, the markets were $27.4 billion in American continent (north and south America), $32.7 billion in Europe, $58 billion in Asia. The markets of Australia and Africa were minor. The world's transmission and distribution equipments market in 2008 was $123.2 billion. Stable growth of around 4.65% per year is expected and $204.3 billion of global market is expected by 2020. Electricity transmission and distribution equipments in the future are anticipated as follows; -Creation of new demands due to transition from existing single electrical equipments to green energy and converged digital equipments -Aggressive investments to new generation growth technologies, such as smart grid, renewable, etc. -The world leaders in electrical equipments such as ABB, Siemens, Areva, etc. which are European companies with more than 100 years of technologies experiences are still expected to lead the world market.

Applicable market size for superconducting devices is the product of transmission and distribution equipment market size per item and market penetration ratio of superconducting devices.