Theses›Industrial›Energy harvesting

Energy harvesting

Ambient energy harvesting (powering electronics from RF, light, vibration, thermal gradients) is a real technology with a structurally sub-venture market: the systems market converges around $1.0-1.2B by 2030 growing 8-10%, the silicon value sits in harvesting PMICs and transducers shipped…

  • Bear
  • Shut
  • $1.5B by 2035

The callBattery-free tags are coming, but the harvester is a sub-dollar part that ends up on-die in Qualcomm or Nordic chips; a pass on every route.

D1D2R1R2R3C1foragainst D1D2R1R2R3C1foragainst
Fig. 1The balance. Drivers and catalysts against restraints, each block sized by its weight; catalysts hang dashed because they have not happened yet, sized by their odds. It tips toward the restraints.
  1. D1Tens of billions of objects could carry a tag and under 1% do, because batteries cost money, need replacing and cannot scale to every parcel and pill box.
  2. D23GPP's Ambient IoT work and IEEE 802.11bp create the first cellular and Wi-Fi standards for battery-free harvested tags, a new volume chipset socket.
  3. R1The value is a sub-dollar part made by TI, ADI, STMicro and Nexperia, and the harvester ends up on-die in Qualcomm or Nordic chips.
  4. R220 years of venture money produced niches and pivots: no exit above $50M, EnOcean's listing called off, the best European independent at about €6M of revenue on €36M+ raised.
  5. R3The whole systems market is only about $1.0-1.2B by 2030, growing 8-10%.
  6. C1The 3GPP Rel-20 Ambient IoT stage-3 freeze, the first cellular standard for battery-free harvested tags, with silicon following in 2028-29.Mar 2027
Rests onthe beliefs underneath
Supported by · confidence
What would prove itdated tests, open and resolved
202720282029today123predictionswatch 202720282029today123predictionswatch
Fig. 2Each ring is a dated test: dashed while open, struck through when overdue, ticked or crossed once resolved.
  1. 1No pure-play energy-harvesting chip company announces a round of $50M or more between 6 Nov 2026 and 31 Jan 2027.Jan 2027 · open
  2. 2Through end-2028 no pure-play energy-harvesting-silicon company raises >= $50M on commercial traction AND ambient-IoT chipset shipments stay below ~100M units/yr.Dec 2028 · open
  3. 3A harvesting-silicon company raising $50M or more on commercial, non-defence traction, or ambient IoT chipsets passing about 100M units a year; either would reopen this.Dec 2028 · open
  • ·An independent test of Casimir's quantum-vacuum chip claim.
Expressionslisted, private, technologies
  • STMSTMicroelectronics
    • fair
     Energy-harvesting power-management ICs and related transducer and microcontroller parts sold to IoT, industrial and wearable device makers.
  • TXNTexas Instruments
    • cheap
     Energy-harvesting PMICs (BQ255xx family and similar) sold to sensor, IoT and industrial device makers.
  • 6723.TRenesas Electronics
    • expensive
     Low-power microcontrollers and power-management parts for energy-harvesting sensor nodes, sold to IoT and industrial OEMs.
  • ADIAnalog Devices
    • cheap
     Energy-harvesting power converters and PMICs (ex-Linear Technology LTC parts) sold to industrial and IoT device makers.
Private · 4 private companies, 3 of them in the US; none in continental Europe.

Casimir · Wiliot · Atmosic Technologies · Ambient Photonics

1 more private company tracked, not shown

Technologies
Who has already bet on itprivate rounds, from public sources

$472M raised by 4 companies, $59M of it in the last three years. Wave building: Money is arriving: recent rounds and tier-1 funds are in, but no runaway leader yet.

Backed by a top-tier venture firm: Wiliot, Atmosic Technologies. Backed by a strategic investor: Wiliot.

  • $270MWiliot
    • Founded 2017
     Series C, Jul 2021 $200M (SoftBank Vision Fund 2, 83North, Amazon Web Services)
  • $112MAtmosic Technologies
    • Founded 2016
     Series D, Mar 2025 $40M (Sutter Hill Ventures, Clear Ventures, Quantum Innovation Fund) · Growth, Jan 2022 $72M (Sutter Hill Ventures)
  • $78MAmbient Photonics
    • Founded 2019
     Series A2, Sep 2023 $30M (Fine Structure Ventures, Helios Climate Ventures, Regeneration.VC)
  • $12MCasimir Seed, May 2026 $12M (Scout Ventures, Lavrock Ventures, Cottonwood Technology)
What changedthe record, newest first
  • 16 Jul 2026Looked properly at ambient power (electronics that harvest their energy from light, radio, vibration) after a funding round crossed the desk. Verdict: real technology, wrong shape for venture returns; the market is around a billion dollars a decade from now and the chips inside it are a component business the analog incumbents already run. The one thing that would change this: the new ambient-IoT radio standards creating billion-unit volume, which is worth a dated tripwire, not a position.
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