What we have measured so far
Nitrate output has been measured independently at KNUST. Throughput and power draw are Harvora's own measurements of the current MVP. Agronomic results are held back until they carry a sample size and stated trial conditions.
Nitrate output, measured at KNUST
Nitrate concentration produced by the reactor across three power settings, measured by KNUST Water and Environmental Quality Laboratories using standard method SM 4500-NO₃⁻ E.
| Input power | Duration | Nitrate produced |
|---|---|---|
| 500 W | 5 min | 38.8 ppm |
| 900 W | 15 min | 66.3 ppm |
| 1300 W | 20 min | 94.5 ppm |
Third-party laboratory measurement of what the reactor produces. It does not certify throughput in the field, agronomic outcome, or energy efficiency — those are separate questions and are labelled as such wherever they appear. Our current energy efficiency, and the gap to viability, is set out on the technology page.
150 L
nitrate solution per hour, at 12–18 ppm NO₃⁻
FarmRover MVP
1.3 kW
reactor only, rover idle; 4 kW with the rover driving
FarmRover MVP
These figures come from Harvora's own measurement of the current MVP and have not yet been independently replicated. Agronomic results — yield, biomass, germination — are not published here yet: a percentage without a stated sample size, crop and season is not a result anyone can use. The full laboratory and agronomic dataset publishes on .
Who has backed this so far
Fidelity Bank Green Tech Innovation Challenge
GHS 50,000, non-dilutive
January 2026
Innohub
Early-stage backing
KNUST, Department of Electrical Engineering
Technical support on reactor power electronics and control systems
KNUST Water and Environmental Quality Laboratories
Independent analysis of nitrate output
Why we invent
A short film from the Harvora team.
Field data comes from farms willing to host a unit
The laboratory and agronomic dataset publishes on 30 September 2026. Beyond that, Harvora is looking for pilot hosts across Ghana and West Africa — if you farm, distribute, or fund agricultural technology, a deployment is the fastest route to field data.