All energy costs rise but small nuclear most reactive

Construction and finance costs will push up prices for all energy projects in the coming years. (Dave Hunt/AAP PHOTOS)

Next-generation nuclear reactors are the most expensive of all energy-producing technologies, a report has found, and would significantly increase electricity prices in Australia.

Establishing a large-scale nuclear power plant for the first time would also require more than double the typical costs, and estimates for wind projects had inflated by four per cent due to unforeseen requirements.