Kärnfull Next
Kärnfull Next is a Swedish technology-agnostic SMR project developer that originates small modular reactor sites through permitting and stakeholder engagement to Ready-to-Build status, serving Swedish municipalities, industrial offtakers, and energy investors across its Re:Firm South program.
- Company typePrivate
- Founded2019
- HeadquartersGöteborg, Sweden
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Kärnfull Next does
Kärnfull Next AB is a Swedish small modular reactor (SMR) project developer, founded in 2019 as Kärnfull and re-launched in March 2022 as the SMR-focused entity, headquartered in Göteborg, Sweden. Operating as a technology-agnostic project developer, the company originates SMR sites from greenfield through to Ready-to-Build status, covering permitting, licensing, siting, land rights, design decisions, and stakeholder engagement with municipalities, landowners, technology vendors, and investors. The Re:Firm South program is evaluating multiple southern Swedish municipalities — Valdemarsvik, Motala, Västervik, Nyköping, and Karlshamn — for SMR campuses typically configured as 4–6 reactor units, with GE Hitachi's BWRX-300 (a Gen3+ light-water SMR with passive cooling) and KHNP's i-SMR as the leading candidate technologies, and EPC delivery supported by Samsung C&T.
The company generates revenue through project origination fees, structuring of separate project development companies for sale to investors and technology partners, equity participation in developed projects, and PPA structuring for long-term revenue hedging on operational assets in the 2030s. Customer counterparties are primarily Swedish municipalities (Valdemarsvik, Motala, Karlshamn, Nyköping), industrial off-takers (data centers, life-science companies, hydrogen producers), and energy partners. Kärnfull Next was acquired by Studsvik AB in May 2026 for approximately €6.5 million (cash-free, debt-free) with up to €14 million in performance-based earn-outs tied to project development company sales; the founders joined Studsvik's executive team, positioning Kärnfull Next as the new-build development arm of a vertically integrated nuclear services platform.
Kärnfull Next firmographics
Firmographics- Name
- Kärnfull Next
- Legal name
- Kärnfull Next AB
- Website
- https://knxt.se
- Company type
- Private
- Founded year
- 2019
- Operating status
- Acquired
- Headcount range
- 1–10 employees
- Short description
- Kärnfull Next is a Swedish technology-agnostic SMR project developer that originates small modular reactor sites through permitting and stakeholder engagement to Ready-to-Build status, serving Swedish municipalities, industrial offtakers, and energy investors across its Re:Firm South program.
- Ownership category
- akta.pro rank
Kärnfull Next industry classification
Industry- Product category
- SMR Project Development & Nuclear New-Build Services
- NAICS
- Scientific Research and Development Services (5417)
- SIC
- Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- Small Modular Reactor (SMR) Power Generation (EUACADAF)
- akta.pro secondary industries
- Project & Program Management (PMO), Controls & Reporting (EUAKAAAC), Small Modular Reactor (SMR) Platforms & Balance-of-Plant Integration (EUAKADAA)
Keywords
Where Kärnfull Next is headquartered
LocationHeadquarters
- HQ city
- Göteborg
- HQ country
- Sweden
- HQ region
- Europe
Offices1 record
Markets served
Kärnfull Next business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- SMR Project Development Services: Kärnfull Next develops SMR sites and project platforms for new nuclear power. Revenue is generated through project origination fees, structuring project development companies for sale, and potentially through equity participation in developed projects. The company aims to deliver Ready-to-Build projects to investors and technology partners. Post-acquisition by Studsvik (Q2 2026), it operates as part of a vertically integrated nuclear services platform.
- Power Purchase Agreement (PPA) Structuring: The company structures long-term revenue hedging including PPAs for SMR projects, which may generate structuring fees or ongoing revenue participation as projects move to operation in the 2030s.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Kärnfull Next product offering
Product offeringCore offering
Kärnfull Next is a technology-agnostic small modular reactor (SMR) project developer that originates SMR projects from site selection and feasibility studies through permitting, financing, and Ready-to-Build status. The company develops multi-unit SMR campuses (4–6 reactors per site) for municipalities, data center operators, industrial offtakers, and energy investors across Sweden and the Nordics, structuring project development companies and long-term Power Purchase Agreements (PPAs) for delivery to technology partners and investors.
Product overview
Kärnfull Next is a Swedish SMR project developer offering technology-agnostic small modular reactor project development services. The company operates as part of Studsvik AB following acquisition in 2026. Core offerings include the SMR Campus Development service (full value-chain expertise from permits to siting), Ready-to-Build Projects (factory-built SMRs with financing and PPA structuring), Site Selection & Siting Services (feasibility studies), and SMR Campus Co-location Services (for Data Centers and industrial facilities). These services are delivered through the Re:Firm South program evaluating potential SMR sites across Swedish municipalities. The company also supports the affiliated Kärnfull Energi brand, which offers nuclear-only electricity contracts to end consumers. Kärnfull Next takes on early-stage financial risk in projects and creates value through replicable processes across multiple projects.
Differentiator
Problem solved
Functional benefit
Products and services
- SMR Campus Development Technology-agnostic SMR project development service providing full value-chain expertise from driving new-build nuclear projects forward, covering permits, licensing, siting, land rights, design decisions, and stakeholder engagement. Delivered to municipalities, industrial offtakers, data center operators, and energy investors across the Nordics.
- Ready-to-Build SMR Projects Factory-built and proven decarbonization tools delivered as Ready-to-Build SMR project packages, including financing structuring and long-term revenue hedging through Power Purchase Agreements (PPAs). Offered to investors, technology partners, and energy companies.
- Site Selection & Siting Services Early-stage site selection and feasibility studies for SMR deployment in Swedish municipalities, evaluating technical, economic, and regulatory conditions for candidate sites.
- SMR Campus Co-location Services Co-location offerings for Data Centers, Life-Science companies, and other energy-intensive industries with SMR campuses, including secure perimeters, high redundancy, low latency, terawatt-hours of clean reliable electricity, and bundled electrolyzers for hydrogen production.
Quantifiable outcome
- First new nuclear site application in over 50 years submitted for Valdemarsvik (2025)
- +1 more outcomes
Companies that use Kärnfull Next
Customer profileNamed customers4 records
Segments3 records
Ideal customer profiles4 records
Kärnfull Next technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Kärnfull Next partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered supporting and core.
- Rolls-Royce SMRsupportingStudsvik (parent company post-acquisition) signed an MoU with Rolls-Royce SMR to expand into the small modular reactor market. Kärnfull Next's project development capability combined with this MoU positions Studsvik as a full-cycle nuclear platform.
- Novotron Fusion GroupsupportingStudsvik signed an MoU with Novotron Fusion Group to expand into the fusion energy market. This extends Kärnfull Next's project development focus into advanced nuclear and fusion technologies.
- Studsvik ABcoreStudsvik AB acquired Kärnfull Next for approximately €6.5 million (up to €14 million in earn-outs), expanding from supporting the global nuclear fleet into new nuclear project development. Kärnfull Next founders joined Studsvik's executive team, creating a vertically integrated nuclear services platform spanning project development, fuel and materials testing, reactor analysis software, and waste management.
- Swedish GovernmentcoreThe Swedish government's proposal for a national risk-sharing model for investments in new nuclear power is a critical enabler for Kärnfull Next's projects. The government has introduced SEK 220 billion (€20.6 billion) in financing mechanisms to support new nuclear development, including potential 60% state ownership stakes in new SMR projects.
- Korea Hydro & Nuclear Power (KHNP)supportingKärnfull Next signed an MoU with KHNP to evaluate KHNP's innovative i-SMR technology for Sweden. The partnership was announced during a ceremony in Stockholm and expands the technology options under consideration for Kärnfull Next's Swedish SMR projects.
- Samsung C&TcoreKärnfull Next and Samsung C&T signed a strategic collaboration agreement during the Korea-Sweden Strategic Industry Summit to accelerate and strengthen the development of SMR Campuses within the Re:Firm South program. Samsung C&T is a global construction and engineering giant providing EPC capabilities.
- Steady EnergysupportingKärnfull Next and Finnish nuclear technology company Steady Energy announced a strategic partnership to introduce SMRs for district heating in Sweden. Steady Energy is already set to build SMRs in Helsinki and Kuopio, Finland, with the first commercial unit targeted for 2030.
- Chalmers University of TechnologysupportingKärnfull Next is the commercial partner in a Gen IV next-generation nuclear power system research project led by Chalmers University of Technology. The project received a SEK 50 million grant from the Swedish Energy Agency, one of the authority's largest investments in future nuclear to date.
- FortumsupportingFortum and Kärnfull Next signed a Memorandum of Understanding to jointly explore opportunities for developing Small Modular Reactors (SMRs) in Sweden. Fortum is a major Nordic energy company, and this partnership was intended to evaluate joint project development opportunities.
- GE HitachicoreKärnfull (the original entity) and GE Hitachi announced an SMR collaboration for Sweden in March 2022. This partnership aims to deploy GE Hitachi's BWRX-300 small modular reactor technology in Sweden. The BWRX-300 is identified as the candidate technology in Kärnfull Next's project portfolio.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Kärnfull Next competitors and assessment
Company assessmentBroad incumbents
- GE Hitachi Nuclear Energy: JV between GE Vernova and Hitachi developing the BWRX-300 — Kärnfull Next's lead candidate technology. Provides both the supply-side SMR platform and project development services that overlap with Kärnfull Next's scope.
- TerraPower: Bill Gates-backed advanced reactor developer pursuing Natrium (SMR + storage) projects and led by a former NuScale founder. Comparable as a well-capitalized nuclear project developer targeting broader markets including data centers and industrial offtake.
- Westinghouse: Global incumbent nuclear technology vendor (AP1000 and eVinci SMR). Comparable as a major nuclear technology supplier partnering with — and competing for share of — project developers like Kärnfull Next.
- Korea Hydro & Nuclear Power (KHNP): South Korea's state-owned nuclear utility and technology vendor (i-SMR). Already a Kärnfull Next MoU partner but also a potential competitor developing its own European / Nordic project sites.
Direct peers
- X-energy: US-based high-temperature gas-cooled SMR developer pursuing both own-project development and technology licensing. Comparable as a vertically integrated SMR project developer advancing first-of-a-kind commercial plants.
- Steady Energy: Finnish SMR developer targeting district heating applications, with first commercial units targeted for 2030. Already a Kärnfull Next partner (June 2024) and a direct competitor for Nordic municipal heating and SMR-offtake projects.
- Last Energy: US/UK-headquartered SMR project developer pursuing private, behind-the-meter SMR plants for industrial and data center offtakers. Closely matches Kärnfull Next's technology-agnostic project-development model and offtaker-led go-to-market motion.
- Newcleo: European SMR and advanced reactor developer headquartered in London/Paris, developing lead-cooled fast reactors and pursuing European project sites. Comparable as a European-headquartered SMR project developer pursuing similar municipal/industrial partnerships.
- Rolls-Royce SMR: UK-based SMR developer (subsidiary of Rolls-Royce) building a 470 MWe unit and pursuing UK/international deployments. Already a Studsvik MoU partner with Kärnfull Next, and operates the same technology-vendor-plus-project-development adjacency.
Emerging players
- Copenhagen Atomics: Danish thorium molten salt reactor developer pursuing commercial deployment in the 2030s. Comparable as a Scandinavian advanced reactor developer addressing the same Nordic clean-energy gap that Kärnfull Next targets.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Kärnfull Next social profiles
Digital presenceKärnfull Next financial estimates
Financial estimateRevenue estimate
Valuation estimate
Kärnfull Next leadership team
Management profileNumber of profiles
Profiles6 records
Kärnfull Next funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Kärnfull Next 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 Kärnfull Next
What does Kärnfull Next do?
Kärnfull Next is a technology-agnostic small modular reactor (SMR) project developer that originates SMR projects from site selection and feasibility studies through permitting, financing, and Ready-to-Build status. The company develops multi-unit SMR campuses (4–6 reactors per site) for municipalities, data center operators, industrial offtakers, and energy investors across Sweden and the Nordics, structuring project development companies and long-term Power Purchase Agreements (PPAs) for delivery to technology partners and investors.
Is Kärnfull Next a public or private company?
Kärnfull Next is a private company. It is classified as corporate owned and is currently acquired.
When was Kärnfull Next founded?
Kärnfull Next was founded in 2019. It employs 1 to 10 people.
Where is Kärnfull Next based?
Kärnfull Next is headquartered in Göteborg, Sweden, in the Europe region.
How does Kärnfull Next make money?
Two revenue lines are on record. SMR Project Development Services are the primary driver. The others are power Purchase Agreement (PPA) Structuring.
Who are Kärnfull Next's main competitors?
Broad incumbents on record are GE Hitachi Nuclear Energy, TerraPower, Westinghouse and Korea Hydro & Nuclear Power (KHNP). Direct peers are X-energy, Steady Energy, Last Energy, Newcleo and Rolls-Royce SMR. Copenhagen Atomics is listed as an emerging player.
Does Kärnfull Next have an API?
No public API is recorded for Kärnfull Next.
What industry is Kärnfull Next in?
Kärnfull Next's product category is SMR Project Development & Nuclear New-Build Services. Its primary akta.pro industry code is EUACADAF, Small Modular Reactor (SMR) Power Generation, with a secondary code of EUAKAAAC, Project & Program Management (PMO), Controls & Reporting. Its NAICS code is 5417 and its SIC code is 4991.