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Eight approaches

Companies are attacking the same goal from very different directions. Some are grounded in published physics and still tiny; some promise kilowatts and are still waiting on independent tests. Here is what each approach is, what it could do, and the open questions.

What the hardware looks like

The same idea at four scales: a unit that makes power where it's used. Pick a setting to see where the unit sits and how the power gets to everything it runs.

No meter, no utility lineHeat pumpWall unit10–30 kWBreaker panelKitchenLiving roomHome officeEV chargercharges from the house

One wall unit runs the whole house

A panel about the size of a breaker box mounts on the outside wall and feeds the home's existing breaker panel. Every circuit runs from it: lights, kitchen, heat pump and the car charger in the garage. No meter and no line to the street.

  1. Wall unit
  2. Breaker panel
  3. Every circuit in the house

Approaches aimed at this

Concept drawing of what developers are aiming for, not a claim that any product does this today.

Each dot is one company: claimed demonstrated independently validated

  1. 01

    Solid-state field generators

    4 companies tracked

    Sealed electromagnetic devices that their developers say turn field effects into continuous electrical output. No fuel, no moving parts, no combustion.

    Where the power goes
    Building and site: kilowatt-class units for homes, factories and data centers
    The promise
    Silent, compact and potentially cheap per watt if the output holds up at scale, because many designs use standard components.
    Open questions
    The physical mechanism is not yet explained in peer-reviewed literature, and few devices have been tested by independent labs.
    Aimed atHomeVehicleData center

  2. 02

    Meta-material resonant panels

    2 companies tracked

    Flat solid-state panels built from engineered materials and driven to resonance. Some designs embed a small radioactive source to start or sustain the effect.

    Where the power goes
    Building and site: modular panels stacked to the load
    The promise
    Silent, modular units that can be added panel by panel.
    Open questions
    Isotope handling brings regulation, the field has a history of patent secrecy orders, and independent output measurements are scarce.
    Aimed atHomeData center

  3. 03

    LENR and fusion-based plasma

    3 companies tracked

    Low-energy nuclear reactions (LENR) in hydrogen-loaded metals, and compact plasma systems small enough to power one facility rather than a grid.

    Where the power goes
    Site: heat and power for a single plant, campus or base
    The promise
    Very high energy density with no carbon emissions and long run times on a small amount of fuel.
    Open questions
    Results have been hard to reproduce between labs, output is mostly heat, and anything nuclear-adjacent faces heavy regulation.
    Aimed atVehicleData center

  4. 04

    Mechanical and magnetic

    4 companies tracked

    Generators that use permanent magnets, flywheels or rotating assemblies, which their builders say keep running and produce surplus electricity.

    Where the power goes
    Building and site: portable boxes up to site-scale installations
    The promise
    Easy to demonstrate on a bench, and built from familiar electrical and mechanical parts.
    Open questions
    Moving parts wear, rare-earth magnets add cost, and claims of surplus output need careful independent measurement.
    Aimed atHome

  5. 05

    Casimir effect and graphene

    3 companies tracked

    Chip-scale devices that use Casimir cavities, quantum vacuum effects or the natural motion of graphene to produce small, continuous currents.

    Where the power goes
    In the device: sensors, wearables and electronics first
    The promise
    Grounded in published physics, built with semiconductor methods, and suited to devices that should never need charging.
    Open questions
    Output per chip is tiny today. Reaching useful power means stacking very large numbers of chips at low cost.
    Aimed atDevices

  6. 06

    Betavoltaic and radioisotope

    3 companies tracked

    Batteries that convert the decay of a radioactive isotope directly into electricity, delivering steady power for years or decades without recharging.

    Where the power goes
    In the device: implants, sensors and remote equipment; larger cells in development
    The promise
    Always-on power that lasts for decades in a sealed package.
    Open questions
    Power per cell is low, isotope supply is limited, and regulation shapes what can be sold and where.
    Aimed atVehicleDevices

  7. 07

    Laser and anti-matter

    1 company tracked

    Experimental approaches that use lasers to trigger reactions in exotic states of matter such as ultra-dense hydrogen.

    Where the power goes
    Site: compact reactors, at the research stage
    The promise
    Potentially enormous energy density from very small amounts of fuel.
    Open questions
    These are early research programs. Commercial readiness is years away.

  8. 08

    Strategic and acquisition-led

    1 company tracked

    Companies that start from capital, sites and customers (for example energy parks serving data centers) and acquire or license the generation technology.

    Where the power goes
    Site: energy parks and dedicated campus power
    The promise
    Capital, customers and sites ready to deploy whatever technology proves out.
    Open questions
    Value depends on technology they don't yet own or haven't disclosed.
    Aimed atData center

Members see every company in each approach, with its stage, claimed output and evidence status.

Join free to see the companies