GREENWATT S.A. YOUR RELIABLE PARTNER IN BIOMETHANISATION
COMPANY PRESENTATION
Avenue Jean Monnet 1,
B-1348 Louvain-La-Neuve
www.greenwatt.be
Tel : +32 (0)10 77 91 00
Fax : +32 (0)2 791 57 66
info@greenwatt.be

Company presentation
Mission :
Greenwatt is a Belgian Cleantech Biogas Company which offers innovative multi-stage
TM
biomethanisation technology equiped with a High Yield Digester HYFAD
 Biogas production on-site (compatibility with food industry quality standards)
 100% self-sufficient, without livestock manure for pH regulation
 Sustainable and profitable solution towards agricultural and food industry waste material
Greenwatt targets industries having a source of biodegradable biomass byproduct and/or looking for
partial or total energy autonomy by using captive biomass sources.
Objective:
To conduct biomethanization projects from the feasibility and design phase till the construction, start
up and maintenance with a guarantee of performance.
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
90’ « Spin-off » from University of Louvain (GEBi Pr Gerin)
• GreenWatt SA founded in 2004
• Capital increase thanks to two investment funds
• 2005 – 2008: development of the first industrial pilot based on the multi stage
technology= 1st innovation
• 2007 - 2008: dévelopment of HYFAD (High Yield Flushing Anaerobic Digester) = 2nd
innovation
• 2008: First Industrial project: JOLUWA (Nivelles) Starting up on Jan 2010
• 2009 - … : Development acceleration:
– Capital increase, new shareholders (Saffra,
An other look to efficiency, MCA, JMS-Consult)
– First sales in France
– Reinforcement of the team
– New customers in Fr – Be - Nl
Feb. 2011 – new offices labs & pilot
plant
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
For who?
• Waste to Energy: for: Food industry - Agro-industry – Food services chains -
Retailers
• Operators looking for decentralize energy production
For which size of biogas plants?
• By-products mono or multiple sources, solid and/or liquid vegetal and/or
animal origine
• Capacity ranging from 2.000 till 100.000 Tons By-products/year
• Renewable electricity production in a range of power from 100 kWe till
5MWe
Value for users :
• Sales or use of the renewable energy produced
• Waste treatment savings
• Digestate sales for fertilization
• CO2 emission savings
• Green and modern image
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
• Historically, business competitiveness has been determined by five principal
forces
Threat of new
entrants
Suppliers’ Customers’
bargaining Business bargaining
power power
Internal rivalry
Threat of
(among existing
substitution
competitors)
Porter, 1980
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
• Today, the changing contract between business and society has made this
landscape far more complex
Increased barriers to entry
from growing societal and
environmental standards
Threat of new
entrants Socio-
Ecological
demographic
environment
environment
Greater
strategic Growing
partnership loyalty
Suppliers’ Customers’
s with Business towards
bargaining power bargaining power
suppliers to ‘responsible’
address S&E suppliers
risks
Political and
Technological
legal
Internal rivalry environment
environment Threat of
(among existing
substitution
competitors)
Greater differentiation in
Power of reputation as a
S&E* performance of
business asset
product/services
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Hence, companies started to understand that taking a position on sustainability is critical,
especially given the potential impact of many issues facing the sector
Illustrative
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Client challenges
How can we ensure a
What are the positive impact over the 40
How can we strategic year lifetime of our project?
ensure our sustainability
investment issues for our How do we
business? How do we
strategy capitalise on
manage our
addresses emerging
procurement risks
sustainability How do we create environmental
effectively?
risks and new revenues through technologies?
opportunities? sustainability?
What is best practice when
delivering on our social
obligations?
How do we establish
effective sustainability Is our responsible How do we
metrics for our sector? lending policy strengthen our
delivering impact? position in
sustainability
indices?
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
• Drivers for growth are strengthening, especially relating to climate change
and public accountability
Market Drivers
 Climate change imperative and other global environmental concerns
now high up on government and business agenda
Climate Change  Drives need for new technologies and complex policy mechanisms to
improve performance
 Increasing societal expectations on governance, accountability,
Public transparency, safety/environmental/social performance
Accountability  Drives requirements for improvements in systems, processes,
organisations and culture
Investment/  M & A activity buoyant, also in developing regions
M&A  Drives needs for environmental due diligence, liabilities assessment
Technological  New technologies with increasing complexity, such as software-based
systems for transportation, process industries
Development  Drives needs for new safety/environmental assurance methods
 Continuing trend for increasing regulation in high-hazard industries,
especially public service providers
Regulation  Drives requirements for interpretation and response, business
integration,
performance improvement, cost-effective design of risk controls
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Social, economical, environemental and political changes will impact for long the
relationships within agriculture and food industry from field to fork
Renewable energies at Sustainable development mooved Sustainable development is
Continuous growth of
double digit growth from the political promise to the no more a fashion but a key
CO2 emission cost
concrete program trend
Oil barrel price explosion
Transportation cost explodes
thanks to taxes, energy &
Economy & Politics Social
congestion
Yield / ha have doubled
thanks to GMO Food chain traceability
from field to fork including
Biomass production out of ecological footprint
Food
the field performs well
Agriculture Industry Consumers
and
Increased role of agriculture as Retailers Health & wellness trends
biomass resources for energy reinforced green and
production sustainable e
Simplified regulations
Technology & sciences Only certified companies can supplie
Less investment subsidies Better retailers
feed in tarrifs Environment
Non sustainable technologies
and practices more and more Waste destruction more and more Sustainable development labels and
penalized regulated and expensive environmental footprint as
marketing support
Intense innovation activites in the field of Increased importance of the
renewable energies green image

Company presentation
•One of the main aspect of sustainable development
•= renewable energies. 1.Climat change
2.Oil reserves are
exhaustibles
•Renewable energies = renewed naturally, indefinitively,
•et inexhaustbles at the temporal scale of our civilization
•Origines of renewable energies :
 Internal heat of the earth: geothermy
 Tide energy = interaction Earth - Moon
 Sun: photosynthesis: CO2  Biomass  Biogas  Energy + CO2
•Biomethanization Process
•Natural phenomena = Degradation of organic matter by micro-organisms  biogas containing methane
4 successive transformations :
Hydrolysis  Acidogenesis  Acetogenesis  Methanogenesis
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
- Anaerobic degradation of organic matter by micro-organisms
- 4 successive bioconversions steps :
1. Hydrolysis 1 digester =
2. Acidogenesis
Completely stirred
3. Acétogenesis
4. Methanogenesis
- Hydrolysis & Acidogenesis = pH
- Methanogenesis : Optimal conditions
 pH around 7
If pH < 6,5 : no CH4
T° between 35°C &40°C
 No oxygen
 No inhibitors
Several dedicated digesters
= Multi stage technology
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
•Biomethanization – Natural phenomenon
– Volta (1776) « Marsh gas is inflammable »
– Lavoisier (1787) « Hydrogenium carbonatum »
– Paddy field:100g methane / kg rice
– Animals (including ruminants): 110 millions tons methane /year
Biomethanization is one of the most promizing renewable energy
offering a conversion rate of 4 to 5 TEP/ (year x ha) – (Source: Verstraet 2009)
Technology is now mature, after lots of efforts (complexity, legal
environment, non captive use vs Bioethanol & Biodiesel)
– 40’ : biomethanization domestication and energy production by manure digestion
– Since 70’, 1st oil crisis & solution for manure issues
– 4200 plants in Germany + Integrated cases in Sweeden (Classical process)
– To Day: strong development (political will + economical and environment context)
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Which substrates?
1 Ton moist by-product
200 Kg Dried Matter
350 kg COD
Biogas
230 Nm³ Biogaz
140 Nm³ CH4
140 Liters fuel = 1400 kWh
520 kWhé + 650 kWhth
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
The classical technology known as "completely stirred process” or CSTR:
 Digestion in a single tank organic material mixed with a fixed proportion of manure
required for the proper functioning of the plant
 Allows a maximum loads of 3 kg of organic matter / m³ / day
 It works, but request manure and/or equivalent
 Risk of acidosis that stop the whole system for months
 Quite high operating costs
 Technology extremely sensible towards substrate changes
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
The GreenWatt technology combines : Which technology ?
1. Multi-stage technology:
the liquefaction of solid waste (acid stage), the methanogenesis (pH neutral stage) and the
post-digestion take place in separate dedicated digesters, which provides robustness,
reliability, flexibility of use and optimum efficiency.
2. The HYFAD (High Yield Flushing Anaerobic Digestor):
Unique high yield fixed bed methane digester design, integrating an automatized anti
clogging system and biofilm renewal. 180m² /m³ of digester: 40 m3 = surface of 2 football
pitches enable >30 kg COD conversion/m³.day
Methanogenesis
H H Cogeneration
Biogas
Y Y
Liquéfaction Gas Grid
F F Post-digester
acidogenesis A A
D D
Storage
Digestate
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Stage 1 Liquefaction:
Transformation of by-products through the action of bacteria into a liquid rich in fatty acids: “acidic
liquor”. Liquefaction requires a volume related to the type of input
Stage 2 Methanization HYFAD:
Production of methane gas by the action of methanogenic bacteria, by transforming the free fatty acids
of the liquor coming from the liquefaction tank.
Optimal physico-chemical parameters are pH neutral & temperature around 38°C
Stage 3 post-digestion & gas storage :
Post-digestion and Biogas storage
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
The HYFAD is based on two tanks assembled on a metal structure before being installed on a concrete
slab (Figure 1). The two tanks contain a kind of honeycomb on which the biofilm growth (Figure 2).
The two tanks are connected with a set of valves that allows reaching high speeds of the liquid and
proceed to the rinse of excess bacteria, therefore solving the problem of clogging (Figure 3).
The system recreates, artificially and with low power consumption, the phenomenon of waves cleaning
the coast and developing an optimal thickness of the bio-film
The advantages of HYFAD are key :
1. Fully automated with low energy consumption
2. No risk of clogging the fixed bed digester
3. Optimal regulation of biofilm thickness
and its exchange capacity that guaranty high yield
and an extreme compacity
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
Key advantages of the multistage technology:
1. Possibility of treating organic substrates, without the use of livestock manure, allowing for use in
food industry sites
2.Sturdy self-regulating process that can cope with large variations in the quantity and quality of
substrate input without acidification of the digester.
3. Ergonomic and compact plant with reduced running costs. Can be decentralized and placed easily
on the waste production with short cycle not requesting any transport
4. Optimal regulation of the pH of methanogenesis reducing the duration of the process and allowing
for a quicker start-up time should the process be interrupted.
5. The HYFAD methanogenesis fixed bed digester renews the biofilm avoiding all clogging problems,
and guaranteeing optimal efficiency.
6. Improved biogas production yield through the optimisation of each stage of the bioconversion
process.
7. Flexibility of use, ability to adjust the gas production depending on the supply constrains
(availability of source materials) and the energy requirements.
8. Optimal digestate quality – 100% traceable origins. used or sell as a high quality fertilizer
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
For the treatment of sewage - liquid effluent with COD levels min 5.000mg/l, HYFAD
technology or UASB
1. Smaller size of the plant and low operating cost allowing to be placed easily on the waste
production site
2. HYFAD technology, allow optimal regulation of biofilm thickness and its exchange
capacity, that guaranty high yield with no risk of clogging the fixed bed digester
3. Reduced time of the methanization process and faster recovery in case of an emergency
stop
4. Flexibility of use; it is possible to regulate gas production according to the client specific
needs
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be

Company presentation
A biomethanization project, from the feasibility phase till the starting up and maintenance
15 (+/- 10%) ton
witloofwortelen/dag stockage kuip
(8 uur/dag, 5/7d, 49week/jaar)
modder stockage
450m³ uitgang modder
naar stockage zone
16,7m³/dag
vloeibaarmaking kuip Buffer kuip BIOGAZ (5/7dagen) uittrekking modder
450m³ 20m³ 66% CH4 / 33,8% CO2 2m³/dag
0,1% O2 / 80ppm H2S (5/7 dagen)
gefilterd water
stockage kuip
naar riool
150m³
14,7m³/dag
(5d/7d)
10kW elec 52kW elec
vergisting kuip (24u/d, 343 d/jaar) (24 u/d, 343 d/jaar)
methanogene alcool
6,2m³/u (24u/24u)
1x55m³
62kW elec
(24 u/d, 343 d/jaar)
25,75 m³ BIOGAS/u WKK 80kW
7
(24 u/d, 343 d/jaar)
? elec : 36,8%
2 m³/u (7u/24u)
? therm : 47,9%
gezuiverd alcool
1 2 3 4 5 6
84kW therm
methanogene modder (24 u/d, 343 d/jaar)
1m³/week
32kW therm 51kW therm
(24 u/d, 343 d/jaar) (24 u/d, 343 d/jaar)
Gegevens witlooftrekkerij met 15 ton afval / dag Overzicht van de installatie
gas productie : 640 m³BG/dag
Verse organische stof : 15±10% ton/dag Gehalte biogas: 66% CH4
(haarworteltjies, getrokken wortelen, te kleine wortels) Totaal biogas/ton VS : 55m³BG/tVS
Totaal CH4/ton VS : 36m³CH4/tVS
Beschikbaarheid VS : 5 dagen/week
49 weken/jaar
235 dagen/jaar
werking tijd van de vergisting : 24 u/dag
7 dagen/week
49 weken/jaar
343 dagen/jaar
Feasibility Pre-engineering Specification
Final offer Technology,
study Detailed
Pre- Earthwork Piping,
Technico- engineering
feasibility Automatism,
economical
study Main structure electricity,
Financial files Building
building Cogeneration
Pilot tests subsidization permit&
Authorisation
1-4 weeks 4-10 weeks 4-8 weeks 12-24 weeks 8-10 weeks 10-14 weeks
1. Sales contact
2. Pre-feasibility OK.
Go for feasibility study 7 8 9 10
3. Technico-economical feasibility OK Insémination
4. Contract signature & Feeding Cogeneration Technical
5. Undertake building Start-up Start-up support
6. Main structure reception Performance Maintenance
Technician &
7. First feeding Operators tests contract
8. Temporary reception training 6 weeks
9. Cogeneration start-up 6 weeks 12 weeks
10.Final reception

Company presentation
Biogas potential :
100Nm³ biogas =
60 liter mazout =
0.6MWh
Avenue Jean Monnet 1, B-1348 Louvain-La-Neuve / www.greenwatt.be / tel : +32 (0)10 77 91 00 fax :+32 (0)2 791 57 66 / info@greenwatt.be