Electricity from living plants

How far are plant microbial fuel cells from producing useful power?

Plant microbial fuel cells use microbes around plant roots to produce a small electric current. The verified field figure is about 0.44 watts per square metre of planted area, from a rooftop pilot at Wageningen University reported in 2013. Researchers at the University of Trento have described a plant-powered sensing node, and a 2026 journal paper reports a self-powered soil sensor from a related soil cell. Output is small, and there are no multi-site, multi-season field data for plant cells in the sources reviewed.

AI illustration · Illustrative scene, not a photograph of the specific device or experiment.
WHERE WE AREEngineering prototypes

Getting closer. Prototypes exist, but not in real-world use.

Plant microbial fuel cells have been built and measured, including a rooftop pilot and a wireless sensing node. Output has been reported per square metre of planted area. The sources opened do not show a product sold with a rated output, or repeated field results across sites and seasons, so the stage is engineering prototype rather than pilot.

The tech tree

Everything recorded on Vrulum that this future needs, oldest foundations at the top and the goal at the bottom. Lines show what each step requires.

What it takes: Electricity from living plants Unlocked Being researched Locked
  1. 2008Plant microbial fuel cellsResearch and prototypes Being researched.
  1. 2013Output measured at rooftop pilot scaleDone Unlocked.
  2. 2013Low-power toy run from a plant-microbe cellDone Unlocked.
  3. 2017Wireless sensing node powered by a plant cellDone Unlocked.
  4. 2026Soil cell powering a self-powered sensorIn progress Being researched.
  5. Date not recordedOutput raised by changing the electrodesDone Unlocked.
  6. Date not recordedField trials across soil types and seasonsNot started Locked.
  7. Date not recordedCommercial product with a rated outputNot started Locked.
  1. GoalElectricity from living plantsGoalRequires: Plant microbial fuel cells, Output measured at rooftop pilot scale, Output raised by changing the electrodes, Low-power toy run from a plant-microbe cell, Wireless sensing node powered by a plant cell, Soil cell powering a self-powered sensor, Field trials across soil types and seasons, Commercial product with a rated output. Locked.

The road so far

4 of 7 steps done, 1 in progress.

  1. Done · 2013Output measured at rooftop pilot scale

    Wageningen University researchers reported about 0.44 watts per square metre of planted area from a pilot plant on the roof of a university building. The source I opened does not state how long the pilot ran. [1]

  2. DoneOutput raised by changing the electrodes

    According to the same 2013 article, the team's last electrode attempt doubled output from 0.22 to 0.44 watts per square metre, and it plans further changes to electrode size and shape. Helder calculates that the system should be able to approach a maximum power density of around 3.2 watts per square metre. That is a calculated ceiling, not a measured result. [1]

  3. Done · 2013Low-power toy run from a plant-microbe cell

    Plant-e, a spin-off from the Wageningen work, is focusing on a tabletop toy: a plant-microbe fuel cell that powers a spinning globe, according to the 2013 IEEE Spectrum article. The article does not give the run time. [1]

  4. Done · 2017Wireless sensing node powered by a plant cell

    The abstract of a 2017 DATE paper from the University of Trento describes a self-sustaining, ultra-low-power node with long-range communication, powered by a plant-microbial fuel cell and using FRAM memory. The authors frame the work as a step towards energy-neutral sensors powered by biosystems. The abstract gives no power figures or run times. [2]

  5. In progress · Feb 2026Soil cell powering a self-powered sensor

    A February 2026 Journal of Power Sources paper reports a self-powered soil sensor using soil microbial fuel cells, not plant cells. The repository record confirms the title and date, but the abstract could not be opened, so its output and run length are not used here. [3]

  6. Not startedField trials across soil types and seasons

    Results across several sites and seasons would show whether output holds up outside controlled setups. There are no such data for plant microbial fuel cells in the sources opened.

  7. Not startedCommercial product with a rated output

    The sources opened do not confirm Plant-e's current products. The 2013 article describes a tabletop toy, and gives no rated output for a commercial unit.

Why it matters

If a plant-linked cell could power a sensor for months without battery changes, environmental monitoring in soils and wetlands would need fewer site visits. The main question is whether the output per square metre can rise far enough, and at a low enough cost, to power anything beyond very small devices.

What stands in the way

  • Measured output is small. The only field figure per square metre in the sources opened is about 0.44 watts from a 2013 rooftop pilot, and the sources reviewed give no later figure for a larger area.
  • Cost is high in the 2013 source, which reports installation at around 600 euros (about US $780) per square metre, most of it labour, against a target of under 40 US dollars per square metre.
  • No published design in the sources opened shows a full energy balance for a plant-powered node, including storage and power management for a device that draws power intermittently.
  • Output depends on the surrounding conditions. Press coverage of a related soil cell (ScienceDaily, April 2026) says earlier soil designs struggled to deliver consistent performance and need both moisture and oxygen, which is hard to maintain underground in dry conditions.
  • No long-term durability data for plant electrodes was found in the sources opened, so service life is unknown.

Published forecasts

What others have predicted. These are their estimates, not ours.

WhoForecastTimeframeMade
Marjolein Helder (Wageningen University)Helder said the technology was not yet economically practical but that 'we'll definitely be able to compete soon'. No year was given. [1]Not given29 Jan 2013

Signals to watch

  • A published power density per square metre from a multi-site field trial, with run length and failure rate reported.
  • A plant-linked cell powering a commercial sensor, with a rated output and a published test method.
  • Year-long data showing whether output holds through seasonal change and dry spells.
  • A reported installation cost per square metre for a recent system, to compare with the 2013 figure.

Sources

  1. news
    Plugging In to Plant Roots
    Lucas Laursen. IEEE Spectrum, 29 Jan 2013.
  2. conference paper
    Long Range Wireless Sensing Powered by Plant-Microbial Fuel Cell
    Maurizio Rossi, Pietro Tosato, Luca Gemma et al.. DATE 2017, Design, Automation and Test in Europe, 2017.
  3. peer reviewed paper
    Development of a self-powered soil sensor using soil microbial fuel cells for power autonomous sensors for smart agriculture
    Bongkyu Kim. Journal of Power Sources (repository record, Jeonbuk National University), 28 Feb 2026.
  4. news
    Scientists develop dirt-powered fuel cell that could replace batteries
    ScienceDaily, 19 Apr 2026.

Last reviewed 21 Oct 2026.