01 / 05
Physics
Define the physical question.
Start with the plasma behaviour, assumptions and constraints that must be understood.

Quasarus Fusion · Nagpur, India
Quasarus is an Indian fusion R&D company building reproducible physics models, simulation workflows and engineering constraints before advancing to subsystem hardware.
Early-stage R&D · Incorporated 2026
Quasar
An active galactic nucleus of extraordinary luminosity.Fusion development requires progress across physics, computation, materials, electronics, diagnostics, manufacturing and experimental hardware. Quasarus is building a disciplined programme that connects these domains through measurable engineering milestones.
One question becomes the next.
01 / 05
Physics
Start with the plasma behaviour, assumptions and constraints that must be understood.
02 / 05
Computation
Use computational workflows to challenge assumptions and identify the evidence that matters next.
03 / 05
Engineering
Turn what the models reveal into testable requirements, interfaces and development gates.
04 / 05
Hardware
Create focused experimental hardware only when it can produce useful, traceable evidence.
05 / 05
Iteration
Let physical results improve the next cycle of physics, computation and engineering decisions.
Concept visualisation · no final geometry or operating device
Fusion is worth pursuing precisely because its potential is large and its engineering burden is unforgiving.
Fusion's energy-density and firm-power potential justify sustained research without diminishing the difficulty of the work.
Progress depends on physics, materials, power, controls, diagnostics and manufacturing advancing as one engineering system.
Quasarus reduces uncertainty through reproducible modelling, subsystem measurements and explicit gates before integration.
Physical modelsDefine the physical assumptions, behaviours and operating constraints that a credible programme must answer.
Reproducible simulationUse reproducible models to explore parameter space and reject weak directions before expensive physical work.
System constraintsTranslate promising physics into systems that respect materials, thermal, structural and control realities.
Measured evidenceBuild measurable subsystems and integrate only what has earned the next experimental step.
Working name
Its purpose will be to test selected subsystem behaviour, instrumentation and engineering assumptions before progressing toward a more integrated experimental system.
Illustrative hardware studyCompleted
Current
Planned
Planned
Planned
Exploratory
The Kardashev Horizon
The Kardashev scale connects a civilization’s technological capability with the energy it can command. Quasarus uses the Kardashev Horizon as a long-term design philosophy—not as a claim about present capability.
The KH development phases are Quasarus programme identifiers. They do not represent or claim achievement of Kardashev civilization levels.Quasarus is presently in an early research and engineering phase. No operational fusion reactor or completed experimental prototype is being claimed.
QUASARUS (OPC) PRIVATE LIMITED is an Indian deep-technology company established in Nagpur, Maharashtra. The company was created to pursue long-horizon fusion research through disciplined scientific, computational and hardware development.
“Quasarus is being built around a simple rule: models must be reproducible, assumptions explicit and hardware earned by evidence.”
The company begins its work as an Indian research and experimental-development enterprise.
A public foundation for communicating the mission, approach and factual programme status.
Define the first reproducible modelling workflow and its engineering decision gates.
Research · Engineering · Collaboration