Nuclear district heating solution

The innovative concept for district and process heat production

Thermal power range  
50 – 200 MW

Use of spent nuclear fuel

Construction investment cost below 30M EUR*, heating cost less than 4 EUR/GJ*

* Prices of 2019

TEPLATOR is using proven technology principles and construction materials. Using the heat produced in TEPLATOR, we are lowering the environmental footprint. By implementing the idea of energy storage into the design, we can in fact ensure continuous heat supply to the customer. With the use of the spent fuel from conventional pressurized water reactors (PWRs) we ensure better utilization of the nuclear fuel. Thanks to its design and size, TEPLATOR can be sited at locations closer to end customers.


TEPLATOR. The innovative concept for district and process heat production using already irradiated nuclear fuel (not burnt up to its regulatory and design limits) from commercial light water power reactors.

TEPLATOR is a critical assembly derived by the state-of-the-art computational tools using:

  • better moderation

  • more optimal fuel lattice pitch

  • lower fuel temperature

  • lower coolant pressure for producing commercial heat

  • cost of less than 4 EUR/GJ

Investment cost for building the TEPLATOR district heating station is below 30M EUR (prices of 2019).

The TEPLATOR solutions is especially suitable for countries that have thousands FAs stored either in interim storage casks or spent fuel pools. These FAs are now financial liability which, once used for heat production, can turn into a sizeable financial asset.


There are several variations for TEPLATOR, one of which being TEPLATOR DEMO.
It has following features:

  • operating at atmospheric pressure
  • three loop heavy water design
  • three primary heat exchangers
  • three circulation pumps
  • 55 fuel elements in the core

The whole system consists of:

  1. TEPLATOR core
  2. Intermediary circuit with possibility of including energy storage system
  3. Heating circuit

The primary coolant after leaving the fuel part enters the primary heat exchanger (HE I), where the heat is transferred to the inner circuit heat transfer fluid. This heat transfer fluid transfers heat from the primary heat exchanger (HE I) via the inner circuit into the secondary heat exchanger (HE II), where heat enters the actual heating circuit (i.e., supplying heat to end consumers).



We are a young, innovative group of scientist and professionals from top Czech research organizations. We have a plan to transform heating industry from fossil fuel present into clean energy future. Our target is to develop the most sustainable and economical life-cycle for nuclear fuel.



Are you interested in district heating solution TEPLATOR? Contact our team.