Green energy for Nijmegen

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  • Energy and infrastructure
ARN B.V. is an energy producer that uses waste as its raw material. On 24 May 2013 it opened a new, modern fermentation and composting plant, enabling it to supply large quantities of green energy to the Nijmegen heating grid each year.

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It is one of the few energy-producing companies in the Netherlands and the world that not only uses exclusively secondary fuels, but that uses secondary fuels which are largely produced in-house through reprocessing of waste materials. ARN's business activities are financed 50/50 by BNG Bank and Rabobank.

New developments at ARN

In August 2011, ARN started construction of a modern fermentation and composting plant with a processing capacity of 40,000 tonnes per year. The plant takes in a range of fruit, vegetables and garden waste. This green waste is first fermented, then composted. The waste is transported through the fermentation reactor via a slowly-rotating agitator, with bacteria and (usually) oxygen being added along the way. The fermentation process takes place at a temperature of around 55ºC. The turnaround time in the fermenter is around 12 days.

The fermentation releases biogas, which ARN converts to green gas in a gas reprocessing facility. The green gas is of natural gas quality and can be introduced to the natural gas network. The lorries that collect household waste can also be powered by this green gas, or, as is the case with ARN, the city buses run by the municipality of Nijmegen, an ARN shareholder.

Plant in operation

In March and April 2013 the plant was completed to enable compost to be produced as well. Thus ARN has actually transformed itself from a processor of waste into a sustainable energy supplier and recycling company, converting green and household waste to steam and electricity through a combustion process. The plant was opened on 24 May 2013.

The fermentation and composting plant

BNG Bank is financiering ARN's sustainbanle development

BNG Bank has been a key financial backer of ARN for many years. After a financing round in 2011 to support new developments and restructuring of existing activities, BNG Bank and Rabobank have jointly (50/50) financed all of ARN's business activities, doing their part to back sustainable development at ARN.

For a sustainable world

BNG Bank is a committed partner for a more sustainable society. We enable the Dutch public sector to achieve socially relevant objectives. Our clients are (local) authorities and institutions for housing, healthcare, education, energy and infrastructure in the Netherlands.

Trefwoorden: Tags: Sustainability
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