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Startup Stars
9 mins to read

Cleantech company Alimentary raises $7.7m for first plant

It has developed an anaerobic digestion system to solve problems for ageing sludge ponds in many of the country’s wastewater treatment plants.

Alimentary co-founders Harmaan Madon and Matthew Jackson.

Fiona Rotherham Sat, 28 Mar 2026
© All content copyright NBR. Do not reproduce in any form without permission, even if you have a paid subscription.
Key points
  • What’s at stake: Cleantech company Alimentary has raised $7.7m from lead investor Fireseed Capital as part of a $13.2m raise to build its first plant in Nelson. The plant will process sewage sludge and organic waste into renewable biogas, biofertiliser, and carbon credits.
  • The background:  New Zealand has 314 wastewater treatment facilities with ageing sludge ponds, many of which leak methane into the air, contaminate waterways, and cost ratepayers millions of dollars in disposal fees. Under new national wastewater environmental standards introduced late last year, treatment plants operating on expired consents have a deadline for bringing them up to standard.
  • The players: Alimentary, Fireseed Capital, Harmaan Madon, Matthew Jackson, Jonathan Worboys, Michael Stiassny, wastewater plants.

Cleantech startup Alimentary Systems has been named regional winner for the GreenTech category of the Global Startup Awards Oceania competition, at the same time as it has raised offshore investment to build its first New Zealand plant.

The Global Startup Awards is the world’s largest independent

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Fiona Rotherham Sat, 28 Mar 2026
Contact the Writer: fiona@nbr.co.nz
News tip? Question? Typo? Let us know: editor@nbr.co.nz
© All content copyright NBR. Do not reproduce in any form without permission, even if you have a paid subscription.
Tags
wastewater Alimentary Fireseed Capital sewage sludge startups Haaman Madon Michael Stiassny Jonathan Worboys Matthew Jackson

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Key points
  • What’s at stake: Cleantech company Alimentary has raised $7.7m from lead investor Fireseed Capital as part of a $13.2m raise to build its first plant in Nelson. The plant will process sewage sludge and organic waste into renewable biogas, biofertiliser, and carbon credits.
  • The background:  New Zealand has 314 wastewater treatment facilities with ageing sludge ponds, many of which leak methane into the air, contaminate waterways, and cost ratepayers millions of dollars in disposal fees. Under new national wastewater environmental standards introduced late last year, treatment plants operating on expired consents have a deadline for bringing them up to standard.
  • The players: Alimentary, Fireseed Capital, Harmaan Madon, Matthew Jackson, Jonathan Worboys, Michael Stiassny, wastewater plants.
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Cleantech company Alimentary raises $7.7m for first plant
Startup Stars,Tech & Innovation,
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