Steady Energy
- Company typePrivate
- Founded2020
- HeadquartersHelsinki, Finland
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
Steady Energy firmographics
Firmographics- Name
- Steady Energy
- Legal name
- Steady Energy Oy
- Website
- https://steadyenergy.com
- Company type
- Private
- Founded year
- 2020
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Ownership category
- akta.pro rank
Steady Energy industry classification
Industry- Product category
- Small Modular Nuclear Reactor / Nuclear District Heating
- NAICS
- Steam and Air-Conditioning Supply (221330)
- SIC
- Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- District Energy & Community CHP (District Heating/Cooling Networks) (EUACAKAH)
- akta.pro secondary industry
- Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI)
Keywords
Where Steady Energy is headquartered
LocationHeadquarters
- HQ city
- Helsinki
- HQ country
- Finland
- HQ region
- Europe
Offices2 records
Markets served
Steady Energy business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales, Supply Chain
Revenue model
- Nuclear Heating Plant Design, Construction, and Operation: Steady Energy designs, constructs, and operates compact nuclear heating plants for municipal district heating companies. Revenue is generated through long-term plant development agreements, construction contracts, and ongoing operational services with municipal utilities. The company combines manufacturing-industry efficiency with nuclear engineering to deliver competitive zero-carbon heating.
- Feasibility Studies and Pre-Planning Services: Steady Energy conducts individual feasibility studies for cities and municipal energy companies, modeling network performance, economics, and integration scenarios for LDR-50 deployment. These engagements support decision-making before full investment commitments.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Pilot plant construction (Helsinki) |
| One time/ perpetual license | Multi-year contract | Commercial LDR-50 unit |
| Subscription | Annual | Feasibility study for municipal networks |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Steady Energy product offering
Product offeringCore offering
Steady Energy designs, constructs, and operates compact LDR-50 nuclear heating plants that produce 50 MW of heat exclusively for district heating networks — no electricity generation. The company delivers full project execution (plant development agreements, construction, and ongoing operational services) and complementary feasibility study services for municipal energy companies and city utilities seeking to decarbonize urban heating.
Product overview
Steady Energy offers a focused portfolio centered on the LDR-50 small modular nuclear reactor for district heating applications. The core product is the LDR-50 reactor, a 50 MW heat-only nuclear reactor that operates at lower temperatures and pressures than traditional nuclear plants. The company provides nuclear heating plants based on this technology and complementary feasibility study services to help municipalities evaluate adoption. The LDR-50 is designed to be built underground near urban areas, producing carbon-neutral heat for cities. The company plans to deploy the world's first commercial nuclear heating plants in the early 2030s.
Differentiator
Problem solved
Functional benefit
Products and services
- LDR-50 Nuclear Heating Reactor The LDR-50 is a 50 MW thermal, heat-only nuclear reactor designed for district heating. It operates at low temperatures and pressures, is built underground for safety, and can be located near urban areas. Based on simplified light water reactor technology optimized solely for heating applications.
- Nuclear Heating Plants Compact, advanced nuclear heating plants that combine manufacturing-industry efficiency with innovative nuclear engineering to deliver zero-emission heating for district heating networks. Plants comprise one or multiple LDR-50 reactor units and are designed for underground installation within bedrock.
- Feasibility Studies for District Heating Networks Data-driven feasibility studies evaluating whether LDR-50 technology is technically, economically, and practically suitable for specific district heating networks. Includes data collection, simulation, scenario testing, analysis, and decision support deliverables tailored to each city.
Quantifiable outcome
- Life-cycle CO₂ emissions of 2.4 gCO₂eq/kWh, comparable to offshore wind and far lower than natural gas (~282 gCO₂eq/kWh), coal (~515 gCO₂eq/kWh), or biomass (~50 gCO₂eq/kWh)
- +3 more outcomes
Companies that use Steady Energy
Customer profileNamed customers4 records
Segments3 records
Ideal customer profiles2 records
Steady Energy technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Steady Energy partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered minor and core.
- Alva-yhtiöt (City of Jyväskylä energy group)minorAlva-yhtiöt, the city of Jyväskylä's water and energy group, signed a letter of intent with Steady Energy for a year-long preliminary feasibility study on deploying 2-6 LDR-50 reactors (100-300 MW) for district heating. Jyväskylä is the fourth Finnish municipality to explore nuclear district heating.
- Hyundai Engineering & ConstructionminorHyundai E&C met with a Finnish delegation to discuss cooperation in next-generation energy, including SMR and thermal energy technologies, combining Finland's thermal energy technology with Hyundai's engineering, procurement, and construction capabilities. Discussions centered on potential collaboration for SMR deployment.
- Helen (Helsinki energy group)coreHelen is Steady Energy's primary strategic partner for the Helsinki pilot plant. Helen hosts the 50 MW pilot at the decommissioned Salmisaari coal plant, with plans for nuclear heat production in Finland. Helen's CEO Olli Sirkka has publicly championed the technology. The partnership is central to Steady Energy's demonstration strategy.
- FortumcoreFortum signed a framework agreement to invest in Steady Energy and support planning of operation and maintenance for its district heating nuclear power plant. Fortum is a state-owned Finnish power company and has become a strategic investor alongside Finnish Industry Investment. Fortum provides operational expertise and financial investment to support the project.
- Korea District Heating CorpminorSteady Energy signed its first international deal with Korea District Heating Corp (KDHC), exploring the application of the underground heating reactor technology in South Korea. This represents Steady Energy's first international commercial outreach outside Europe.
- TractebelminorTractebel, an international engineering and consulting group, supports Steady Energy in developing the world's simplest nuclear reactor for clean heating. Tractebel provides engineering expertise for the LDR-50 development.
- TVO Nuclear ServicesminorSteady Energy and TVO Nuclear Services signed a collaboration agreement for nuclear heating development, leveraging TVO's operational nuclear expertise for Steady Energy's district heating reactor plans.
- Kärnfull NextminorPartnership between Steady Energy and Kärnfull Next for sustainable Swedish district heating. Kärnfull Next is a Swedish company working on SMR deployment in Sweden, facilitating Steady Energy's market entry into Sweden.
- Kuopion EnergiaminorKuopion Energia signed a pre-planning agreement with Steady Energy for five LDR-50 reactors, making it one of the first municipal energy companies to commit to exploring nuclear district heating. CEO Esa Lindholm publicly endorsed the technology.
- VTT Technical Research Centre of FinlandcoreSteady Energy is a spin-out from VTT. VTT researchers began developing the LDR-50 concept in 2020. VTT continues to support LDR-50 development and is also a shareholder in Steady Energy. VTT conducted the independent life-cycle assessment (LCA) confirming 2.4 gCO₂eq/kWh emissions.
Scale indicators7 records
Recent moves7 records
Expansion highlights6 records
Steady Energy competitors and assessment
Company assessmentBroad incumbents
- TerraPower: Bill Gates-backed advanced reactor developer (Natrium sodium-cooled fast reactor) currently focused on electricity and industrial heat. Comparable in pursuing advanced reactor licensing pathways, though at larger scale and broader scope than Steady Energy.
- NuScale Power: US SMR developer and the most advanced commercial-stage small modular reactor company, focused on electricity generation. Larger and more established than Steady Energy; represents the broader SMR competitive set even though Steady Energy's heat-only focus is differentiated.
- Rolls-Royce SMR: UK-based consortium developing a 470 MWe SMR with strong government backing. Represents the European SMR regulatory and supply chain ecosystem that Steady Energy must navigate; less direct product overlap but parallel regulatory milestones.
Direct peers
- Newcleo: European SMR developer based in France/UK/Italy building lead-cooled fast reactors for clean energy. Most directly comparable peer as a European advanced reactor startup pursuing nuclear applications beyond traditional electricity — competing for the same regulatory and capital attention in Europe.
- Seaborg Technologies: Danish developer of compact molten salt reactors (CMSR) on floating power barges, including explicit district heating and process heat applications. Closest direct competitor in the small nuclear-for-heat niche, sharing Nordic origins and European regulatory pathway.
- Copenhagen Atomics: Danish thorium-based molten salt reactor developer focused on mass-manufacturable SMRs for district heating and industrial process heat. Shares Nordic regulatory positioning and explicit heat-only positioning similar to Steady Energy.
- Last Energy: US-based developer of small modular nuclear reactors (PWR-based, 20 MWe) targeting industrial and district customers with a streamlined licensing and factory-built model. Directly comparable business model of small, sit-flexible nuclear units sold to industrial/off-taker customers.
Emerging players
- X-energy: US developer of high-temperature gas-cooled SMRs (Xe-100) targeting industrial process heat applications. Comparable in targeting non-electricity industrial heat use cases with advanced reactor technology.
- Terrestrial Energy: Canadian developer of an Integral Molten Salt Reactor (IMSR) targeting industrial heat applications including district heating. Comparable advanced reactor approach for non-electricity heat markets.
Others
- Fortum: State-owned Finnish power and district heating company that is both a strategic investor in Steady Energy and an operator of large-scale district heating networks. Relevant as a customer/investor and as a benchmark for the deployer profile Steady Energy targets, rather than as a direct competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Steady Energy social profiles
Digital presenceSteady Energy compliance and trust
Trust signalCompliance1 record
Steady Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Steady Energy leadership team
Management profileNumber of profiles
Profiles12 records
Steady Energy funding detail
Funding detailFunding overview
Funding rounds4 records
Investors9 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Steady Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Steady Energy
What does Steady Energy do?
Steady Energy designs, constructs, and operates compact LDR-50 nuclear heating plants that produce 50 MW of heat exclusively for district heating networks — no electricity generation. The company delivers full project execution (plant development agreements, construction, and ongoing operational services) and complementary feasibility study services for municipal energy companies and city utilities seeking to decarbonize urban heating.
Is Steady Energy a public or private company?
Steady Energy is a private company. It is classified as venture growth investor backed and is currently operating.
When was Steady Energy founded?
Steady Energy was founded in 2020. It employs 51 to 100 people.
Where is Steady Energy based?
Steady Energy is headquartered in Helsinki, Finland, in the Europe region.
How does Steady Energy make money?
Two revenue lines are on record. Nuclear Heating Plant Design, Construction, and Operation is the primary driver. The others are feasibility Studies and Pre-Planning Services.
Who are Steady Energy's main competitors?
Broad incumbents on record are TerraPower, NuScale Power and Rolls-Royce SMR. Direct peers are Newcleo, Seaborg Technologies, Copenhagen Atomics and Last Energy. Emerging players are X-energy and Terrestrial Energy. Fortum is listed as an others.
Does Steady Energy have an API?
No public API is recorded for Steady Energy.
What industry is Steady Energy in?
Steady Energy's product category is Small Modular Nuclear Reactor / Nuclear District Heating. Its primary akta.pro industry code is EUACAKAH, District Energy & Community CHP (District Heating/Cooling Networks), with a secondary code of EUABAJAI, Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP). Its NAICS code is 221330 and its SIC code is 4991.