Megawatts of comfort.
Gigatons of potential.

Half of the energy we consume is used for heating and cooling and most of that energy still comes
from fossil fuels. Heating alone accounts for up to 12 gigatons of CO2 emissions annually. Transitioning to carbon-free nuclear has enormous potential to make an enormous impact.

The Finnish designed LDR-50, with its small modular design, offers unmatched efficiency, making it ideal
 for dense urban environments. Each unit generates 50MW of zero-carbon thermal power. A few units can warm an entire medium sized city, whatever the weather.

Modular district heating plant

Low Footprint?
How about no footprint?

The LDR-50 is small, so small in fact, it can be built underground. No need for chimneys, mountains of coal, colossal fuel tanks, or large supporting superstructures. This invisible, yet impactful solution is the answer to urban heating headaches. No polluted air, water, or skylines — just clean, reliable warmth.

3D Render of a reactor room
How it works

Why cooler
means warmer.

Imagine a reactor that runs as smoothly and safely as your home espresso machine. That's the LDR-50. Its innovative design allows it to operate at much lower temperatures and safer pressures than traditional power plants.

With no turbines or generators, nearly 100% of the energy produced is distributed to the district heating grid. This not only simplifies the process but also lowers costs. The result? More heat for more homes, delivered efficiently and affordably.

Modular heating plants

Heating plant can be configured according to customer needs by installing reactor modules in parallel configuration
Reactor hall will be constructed underground
and designed as strong as a civil defence shelter
  1. Hot water from the plant
  2. Heat is distributed to the district heating network

Reactor module

Maximum heating power 50 MW per reactor module
Refueling every 2–3 years
Reactor working at pressure as low as in espresso machine
Physically separated water circuits, lowest pressure inside reactor — therefore possible leak retained inside the module
  1. Heat exchanger
  2. Reactor module
  3. Reactor pool
Environment

Warmth without
the woes.

Despite the urgent need for change, many cities still lean on fossil fuels and biomass to meet their heating demands. Neither option is ideal. Fossil fuels come with massive emissions, unpredictable costs and risky exposure to geopolitical disruptions. Biomass brings its own set of woes, notably high biogenic emissions and an adverse impact on biodiversity. Heating a medium-sized city requires a football field-sized pile of logs, every day. This dependence on outdated heating technology means wasted space, resources, money, and time as we race to make progress towards our climate goals.


Steady Energy’s small, scalable solution, the LDR-50 offers a smarter way forward. Less wasted space, less wasted energy 
and steady, affordable progress towards a greener future.

Play film
The output of fresh water from a 4-unit LDR-50
desalination plant would be 44,000 — 88,000 m3
(cubic meters) or up to 23 million US gallons per day.
  1. Seawater intake
  2. Desalination plant
  3. Process heat from the LDR-50 to the desalination plant
  4. Fresh water delivered to consumption in homes and businesses
  5. Saline water returned to the sea
Water security

From scarcity
to security.

Water scarcity is a growing crisis, propelled by climate change and over-extraction. Desalination has the potential to generate theoretically unlimited fresh water but that comes at a high environmental cost due to its current reliance on fossil fuels.

The LDR-50 has the potential to change that by completely decarbonizing desalination. Compact, cost-effective, and capable of being deployed any place where fresh water is scarce, it offers a steady, affordable supply of zero-carbon thermal energy, laying the groundwork for the future of water security.

Process steam for industry

Thinking outside
the grid.

Industries like dairy products, brewing, textiles, and greenhouse agriculture depend heavily on low temperature heat, tying them closely to fossil fuels and the associated emissions. This also exposes them to the unpredictable prices. The LDR‑50 redefines this dependency. The same qualities that make it ideal for district heating, make it perfect for industries determined to meet their climate targets, yet dependent on constant low temperature heat. With its small footprint and scalability, it integrates seamlessly into existing infrastructures, providing predictable, affordable, carbon-free process heat.

  1. Hot water from Steady Energy plant
  2. Heat is used by a industrial customer
  3. Predictable energy costs and lower CO2-emissions from industry