regional waste-to-energy collaborative bw2e 04 andreas taeuber 20150623 l… · regional...
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Page 1
Regional Waste-to-Energy Collaborative
Martinique
Island Energy Transitions: Pathways for Accelerated
Uptake of Renewables
June 23, 2015 Dr. Andreas Christian Taeuber, GIZ REETA-Program
c/o CARICOM ENERGY PROGRAM, Guyana
Page 2
+ EUR 3 mio. • Financial sector
CARICOM-GIZ PROJECT PORTFOLIO IN THE FIELD
OF ENERGY
26.06.2015
2011 2012 2013 2014 2015 2016 2017 2018 … …
SFF-CDB
EUR 0,25 mio.
CREDP II
04/2008-03/2016
EUR 8,95 mio.
REETA
07/2013-06/2017, EUR 5 mio. • Regional strategy
• Capacity building
• Private sector
• Model projects
Page 3 26/06/2015
Component 1
Regional
Strategy
(C-SERMS)
Objective:
Regional and national stakeholders in the field of Renewable Energy and
Energy Efficiency are increasingly able to meet the political, organizational
and technical challenges of a growing market in the Caribbean region
Component 2
Capacity
Building
updated
REETA – OBJECTIVE & COMPONENTS
Component 3
Private Sector
Component 4
Model Projects
Component 5
Financial
Sector
New!
Page 4
REGIONAL WASTE TO ENERY COLLABORATIVE
Actor, Donor, Development Partner,
Stakeholder Activities
CARICOM ENERGY UNIT Harmonization of political and regulatory
framework, coordination
GIZ REETA PROGRAM Technical Assistance, development of bankable
projects
CCCCC and SIDSDOCK Project development and co-funding
OECS Regional framework setting
CLINTON FOUNDATIO N Project development and organizing financing
OTHERS Grants, technical assistance
Close cooperation and realistic approaches
needed!
Page 5
WASTE TO ENERGY
• Incineration: Controlled Burning
of Waste
• Anaerobic Digestion: treatment
of the organic fraction of solid and
liquid wastes
• Secondary Fuels: Conditioned
recycled waste or recycling
residues
• Origin of Wastes: households,
hotels & restaurants, markets,
agro-industries (sugar, rice, etc.),
breweries and distilleries, animal
farms (chicken, pig, etc.),
slaughterhouses, vegetable and
fruit farms, wastewater treatment
Page 6
CARICOM Organic and Plastic Waste Potentials
CARICOM
Status Country
Population
(last census)
Estimated average
Waste
(kg / Year)
1.5 Kg/day per
person
Estimated Waste
(Tonnes / Year)
Organic
Waste
(%)
Plastic
Waste
(%)
Organic
Waste
(Tonnes /
Year)
Plastic
Waste
(Tonnes /
Year)
Full ANTIGUA & BARBUDA 91.295 49.984.013 49.984 50% 10% 24.992 4.998
Full BAHAMAS
(COMMONWEALTH OF) 321.834 176.204.115 176.204 50% 10% 88.102 17.620
Full BARBADOS 277.821 152.106.998 152.107 50% 10% 76.053 15.211
Full BELIZE 340.844 186.612.090 186.612 50% 10% 93.306 18.661
Full DOMINICA
(COMMONWEALTH OF) 72.337 39.604.508 39.605 50% 10% 19.802 3.960
Observer DOMINICAN REPUBLIC 9.445.281 5.171.291.348 5.171.291 50% 10% 2.585.646 517.129
Full GRENADA 109.593 60.002.168 60.002 50% 10% 30.001 6.000
Full GUYANA 735.554 402.715.815 402.716 50% 10% 201.358 40.272
Full HAITI 9.996.731 5.473.210.223 5.473.210 50% 10% 2.736.605 547.321
Full JAMAICA 2.889.187 1.581.829.883 1.581.830 50% 10% 790.915 158.183
Full MONTSERRAT 4.900 2.682.750 2.683 50% 10% 1.341 268
Full SAINT KITTS AND NEVIS 54.961 30.091.148 30.091 50% 10% 15.046 3.009
Full SAINT LUCIA 173.765 95.136.338 95.136 50% 10% 47.568 9.514
Full SAINT VINCENT AND
THE GRENADINES 103.000 56.392.500 56.393 50% 10% 28.196 5.639
Full SURINAME (REPUBLIC
OF) 566.846 310.348.185 310.348 50% 10% 155.174 31.035
Full TRINIDAD AND TOBAGO 1.223.916 670.094.010 670.094 50% 10% 335.047 67.009
Source SIDS DOCK 2015: Waste estimation based on mid values from different Caribbean States. No scientific research, only assumptions which may wary accordingly in single countries.
Assumption: 1,5 kg Waste production per day per person. 50% is Organic Waste (Studies show between 40% to 60% and 10%-15% plastic waste).
Page 7
CARIBBEAN REGION WASTE-TO-ENERGY (WTE)
INDICATIVE PROJECT PIPELINE
COUNTRY PROJECT TITLE
ESTIMATED
PROJECT
COST
(USD)
FINANCING
REQUIRED
(USD)
ANTIGUA &
BARBUDA
Integrated Bioenergy and Food Production: The
project pre-feasibility has been completed for this
project that would establish of approximately 500
acres of grain sorghum on the island of Barbuda
that would be used to produce broiler meat, and the
waste produced would be used to generate biogas
fuel which would displace diesel for power
generation.
5.400.000 5.400.000
BAHAMAS
(COMMONWEALTH
OF)
Feasibility Study for the establishment of a Solid
Waste-to-Energy Facility on New Providence: The
island of New Providence generates in excess of
1,000 tons, per day, of solid waste, dominated by
packaging material, enough raw material to export
in excess of 20MW of firm power to the grid from a
waste-to-energy facility. The feasibility study will
determine the best system to use and relative cost
benefits to aid government decision making in
developing a public/private partnership to
implement the project if proved feasible.
250.000 250.000
Page 8
CARIBBEAN REGION WASTE-TO-ENERGY (WTE)
INDICATIVE PROJECT PIPELINE
BELIZE
Feasibility Study on Distributed Generation to Generate
Base Load Power for Grid Connection: Community
waste-to-energy projects; Feasibility studies will identify
systems that are operational at the scale of 500-2000
residences than can generate reliable base load power
for grid connection.
30.000 30.000
BELIZE
Belize Biogas from Wastewater and Manure: The
Government of Belize and SIDSDOCK are developing an
anaerobic digestion/biogas project at the waste water
facility in San Pedro Ambergris Caye. The project will
use livestock manure. The developers plan to negotiate a
PPA with Belize Water Services Limited (BWSL). The
project will produce biogas for electricity, fertilizer
resulting from the sludge by product for sale to local
farmers and carbon offsets for sale in the carbon market
3.000.000
BELIZE
Demonstration Project for a Low Energy Waste Water
Treatment System: The majority of small communities in
island states do not have waste water treatment
systems. Alternative waste water system modular in
design that uses active biofilms for the decomposition of
organic matter, requiring significantly less energy input
than the conventional sewage systems will be
demonstrated to provide evidence of feasibility,
comparative energy requirement and potential
contribution to water resource availability as part of
climate change adaptation
150.000 150.000
Page 9
CARIBBEAN REGION WASTE-TO-ENERGY (WTE)
INDICATIVE PROJECT PIPELINE
DOMINICAN
REPUBLIC
Commercial demonstration project for sea water desalination --
project is to provide potable water, using the waste heat from the
power plant as the primary energy source. Waste heat from power
plants is major non-utilized energy resources in the SIDS, and
could be used to improve availability of potable water, as
projection are for island states will be become increasingly fresh
water stressed and will have to depend increasingly on
desalination and water harvesting, and recycling of waste water. 1.000.000
GRENADA
Waste-to-Energy Feasibility Study: The mountainous topography
of the country presents major challengers for the collection and
disposal of solid waste. The current situation is resulting in
pollution of the coastal area and deteriorating air quality for
communities located in proximity to the facility. Current volumes
of waste indicate feasibility for a 2-3 MW base load facility 55.000 55.000
Page 10
CARIBBEAN REGION WASTE-TO-ENERGY (WTE)
INDICATIVE PROJECT PIPELINE
JAMAICA
Feasibility study for a waste to energy system for the production of a
minimum of 30 MW from the Riverton City solid waste facility, which
handles more than 1000 tons per day of mixed solid waste,
comprised of solid waste collected from households, businesses,
industry and from cleaning of streets and highways. The solid waste
disposal facility is located 2 miles for the major sewage treatment
which is being expanded to treat some 60 million gallons of waste
water per day. The feasibility study will determine the best option for
maximizing the use of both resources for the production of base
load power to lessen dependence on diesel fuel
280.000
REGIONAL
Preparation of Feasibility Studies: Project involving Technical
Assistance to Caribbean Governments to evaluate the potential
viability of waste-to-energy projects as an alternative to the ongoing
social, environmental and financially costly disposal that is now the
case. Due to limited land availability, growing population and
increased importation of goods, many countries are facing problems
with the management of the various forms of waste, ranging from
municipal, sewage, medical, to agro-industrial waste. In many cases,
there is improper disposal of waste. The potential projects to be
evaluated include:
· Utilization of rum distillery waste
· Conversion of sewage
· Conversion of municipal solid waste and other available biomass
resources into energy. Projects identified as potentially feasibility
will be developed through private-public partnerships and the funds
provided would be refunded to support development of other
projects
1.200.000 1.000.000
SAINT LUCIA
Sewage Waste to Energy: Project is intended to produce fuel from a
combination of sewage and biomass from markets and other
sources to provide 1 MW of base load power and 3 MW of thermal
heat for cooling of commercial buildings in downtown Castries
7.000.000 Pre-feasibility Study
On- going
SAINT LUCIA
Solid Waste to Energy: the aim is to implement a project that
requires no subsidy from tipping fees to produce 10 MW base load
power to the grid. From the waste at the Castries solid waste facility 25.000.000
Page 11
CARIBBEAN REGION WASTE-TO-ENERGY (WTE)
INDICATIVE PROJECT PIPELINE
SAINT LUCIA
Waste Heat to Power Project: The base load of the
country is 40 MW and based on waste heat
recovery system there is potential for a project to
recover up to 4 MW of base load power.
Prefeasibility has shown power from such a
project at US$0.21per kwh 21.000.000
SAINT VINCENT AND
THE GRENADINES
Sewage and biomass property waste to Energy:
The new Argyle International airport is being
established a low carbon facility. Energy for
lighting and cooling will be provided 100 kw PV
system, and other RE combination including
biogas. Based on preliminary assessment there
se is enough inlay materials carry the potential
to produce enough biogas for 0,5 MW electricity
for 8,300 operational hours per year.
3,000,000
TOR for
prefeasibility study
being prepared
Page 12
WASTE TO ENERGY INVESTMENTS IN THE
CARIBBEAN
Country Key facts
Nevis Investor: US renewable energy firm Omni Alpha
Waste to energy (gasification) in combination with solar PV plant to provide
2250 MWh of electricity per year
Investment size: USD 20 million
Capacity: 25 t/day, 1 MW of electricity
Implementation: 12 month implementation started in Q4 2014
Barbados Investor: UK based firm Cahill Energy
Investment size: Up to $240 million
Location: Vaucluse, St. Thomas.
Technology: plasma gasification
Capacity: up to 650 tons of solid waste per day providing 25% of Barbados’
energy needs
Anguilla Investor: Global Green Energy from US
Location: Corito Bay
Technology: Pyrolysis
Capacity: 20 t/day.
BVI Investor: Consutech Systems LLC
Technology: Incineration
Capacity: 1.7 MW of electricity
[
Page 13
THE GRENADA CASE
• Municipal Solid Waste
• High-calorific effluents
• Wastewater
• Agricultural / Animal
Waste
• Plant Residues
• Slaughterhouse Waste
Page 14
THE ENERGY SECTOR IN GRENADA
• Grenada has one of the highest electricity prices in the Caribbean and
worldwide: 40 US Cents/kWh
• Main supply provided by diesel generators (175 GWh in 2013)
• Renewable Energy (RE) has high potential
• Long-term electricity monopoly hinders the promotion of RE
• Liquefied Gas is an important domestic and commercial energy source -
4500 tons have been imported in 2010
• In 2014 average price for LPG is USD 16,67 for a 20 pound cylinder and
USD 82 for a 100 pound cylinder.
Page 15
INSTALLED CAPACITY AND PEAK ENERGY
DEMAND IN GRENADA
Grenlec Annual Report , 2013
25,5 25,9 23,8
25,7
27,9
29,4 30,5 30,8 30,3 30,2 29,2
0,0
5,0
10,0
15,0
20,0
25,0
30,0
35,0
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Peak D
em
an
d (
MW
)
0,3 MW Solar
Page 16
SOLID WASTE MANAGEMENT IN GRENADA
Waste Categories %
Organic Waste 27.1
Site cleaning waste 21.30
Plastics 16.4
Paper Cardboard 13.6
C&D 11.6
Glass 3.1
Metal 2.4
Textiles 2.3
Tires 0.90
Household Bulky Waste 0.70
Street sweeping waste 0.60
• 40 000 tons of domestic and
commercial waste/year
• Domestic waste has about 45 %
organic fraction (27 % based on
total waste)
• Landfill space is very limited,
new developed cells will last
only 7 years without recycling
concept
• Incineration would prolong
landfill use to 25 years, but is
economically not viable.
Page 17
WASTE MANAGEMENT AND CLIMATE CHANGE
• Organic waste in landfills emits Methane over decades
• Landfill gas can be recovered/flared from engineered landfills
• Anaerobic digestion of organic waste as a means of methane reduction
• Recycling can generate new raw material (e.g. PET, Aluminum) or
secondary fuels – reduction of fossil fuels
• Management of wood waste as fuel/secondary fuel
• Recycling prolongs the life span of existing landfills – improved
management
• Incineration – waste as renewable energy source
• Climate adaptation by protecting water resources and enriching soils
with organic fertilizers from processed waste
Page 18
INCINERATION AS AN OPTION FOR GRENADA
• Advantage with regard to volume reduction of waste and energy output 18 GWh/year
• High Investment Costs: 50 Mio. USD
• High O&M Costs
• 40 000 t/year is half of the viability limit for such systems.
• Increase of tipping fee, commercial fees or high subsidy via energy sector required
Page 19
WASTEWATER MANAGEMENT (NAWASA)
• Sewage system in St. Georges: fall out pipe at the stadium bridge
with an average flow of 130.000 gal/day (28,6 m3/ day or 10.451
m3/year)
• Sewage system along Grand Anse: fall out pipe at Point Salines with
an average flow of 660.000 gal/day (145 m3/day or 53.062 m3/year)
• Coarse grid as mechanical treatment/pump protection
• No large-scale treatment planned by NAWASA
• Non-sewered households have septic tanks
• Accumulated septage can be estimated at about 34.700 m3/year
Page 20
MECHANICAL FILTER SYSTEM FOR WASTEWATER
• Two-stage micro filtration
technology (6 - 0,1 mm)
• TSS reduction of 30-60 % and a
COD reduction of 10-30 % with
minimal land requirements and
reasonable costs
• Solid residues have high energy
content with regard to biogas
production
• Improves water quality
• Provides input for biogas
• Fertilizer
Page 21
TYPICAL INPUT MATERIAL FOR ANAEROBIC
DIGESTION
• Animal manure
• Organic solid waste like food
residues, grass, domestic waste
• Processed biomass and wastewater
from agro-industries (e.g. distilleries,
breweries, dairy side products)
• Slaughterhouse waste
• Energy plants such as corn, sugar
cane, grass
• Sewerage sludge and blackwater
from septic tanks
Solid
Waste
Liquid
Waste
Page 22
BIOGAS GENERATION
• Anaerobic digestion is the microbiological breakdown of organic
materials in the absence of oxygen
• Anaerobic digestion works under mesophilic (35-42 °C) as well as
under thermophilic (50-60°C) conditions
• Biogas contains between 50 and 70 % methane, depending on the
input material
• Biogas can be directly used as fuel or further upgraded to bio-methane
with a higher calorific value
• Rule of thumb: energy content of 1 m3 biogas (60 % methane) equals
about 6 kWh or 0,6 liter domestic fuel oil
• Broad range of technologies available!
Page 23
SMALL-SCALE DIGESTERS
• High-tech material for low-tech
applications
• Applicable for small animal farms
and agro-industries
• Modular from 3 m3-100 m3 volume
• Direct use of gas for cooking and
hot-water generation
• Except of the membrane tank, all
materials locally available
Page 24
LARGE SCALE WET-ANAEROBIC DIGESTION
• Animal and liquid wastes
• TS content 3 -15 % TS
• Pond Systems (various providers)
• widely spread in South Amerika
• No mixing required
• Basin Systems (various providers)
• typical for Europe
• Often equiped with agitators or
pumps for mixing
• Retention time: 20-60 days
Page 25
DRY-ANAEROBIC DIGESTION
• Often used for presorted organic
solid waste
• TS content of 28 – 35 % -and does
not require the addition of liquid
• Sizes vary, often modular systems
• GICON (Germany) garage type: no
mixing, low mechanisation
• DRANCO (Germany) system works
with pulper and pump
• Retention time: 28-30 days
Page 26
MANAGEMENT OF DIGESTATE
• High in nutrients: reuse as liquid
fertiliser
• Dewatering/Drying: Secondary
Fuel
• Aerobic Composting: Fertiliser
• Dewatering (if required): Landfill
cover
Page 27
SCENARIOS FOR GRENADA
• Scenario 1
• Dry Digester for organic municipal waste
• Scenario 2
• „All-in-one“ – Organic solid waste and liquid wastes
• Scenario 3
• Effluent Treatment at Clarke‘s Court Distillery
• Scenario 4
• „Agro-Solution“ – Slaughterhouse Mirabeaux, Animal Waste
• Scenario 5
• Decentralised small scale systems for animal farms
Page 28
SCENARIO 1: MUNICIPAL SOLID WASTE
DIGESTION
HYDROPLAN
Assumptions
(2009)
GICON
Assessment
(2014)
Technology
applied
Wet-Thermophilic
System Dry-Wet-Digester
Investment Costs 10,0 Mio USD 10,1 Mio XCD
Electrical energy
content of waste 260 kWhel /t 270 kWhel /t
Organic waste
fraction 35 % 35 %
Total annual
amount of
organic waste to
be treated
14,000 t 20,000 t
Annual electricity
generation 3.640.000 kWhel 5.400.000 kWhel
Sales price for
electricity to the
grid
0.18 USD/ kWhel 0.19 USD/ kWhel
Revenue from
Electricity to the
grid
650,000 USD 1,040,00 USD
• Centralised System
• Low investment costs
• Low energy yield (5.4 GWh)
• Static system
• Production of compost or
secondary fuel
• Investment costs of about 5
Mio. USD
Page 29
SCENARIO 2: „ALL IN ONE“ – CO-DIGESTION OF
WASTE (WET)
Waste Type Total annual amount
(t)
TSS content
(%)
Solid waste + green waste 20000 45
Animal waste (400 pigs + 2000 broilers) 1040 30
Vinasse 6930 2
Slaughterhouse 626 3
Septage (50 %) 17350 10
Sums 45.946
• Mix of various solid and liquid wastes - Wet digestion
• Best energy yield (6.8 GWh/year)
• Transportation is a challenge
• Investment cost of about 8-10 Mio. USD
Page 30
SCENARIO 3: CLARKE´S COURT DISTILLERY
• High energy yield
• Direct reuse as diesel substitute
• Partly solves marine pollution problem
• Investment: Estimate 0,6 Mio USD
Page 31
SCENARIO 4: MIRABEAU SLAUGHTERHOUSE AND
AGRICULTURAL WASTE
• Animal waste from pigs and chicken
• Slaughterhouse waste (and septage
from the northern part of the island)
• Electricity yield: 665 MWh/year
• Heat and electricity directly reused
at facility
• Digestate reuse as fertilizer
• Investment: estimated 0.5 Mio. USD
Page 32
SCENARIO 5: DECENTRALIZED SMALL SCALE
SYSTEMS
• Small-scale farmers (e.g. 10 pigs)
• Direct use of gas as substitute for
LPG in households and agro-
industries
• Water-shed appraoch – to protect
water sources
• 50 small scale farmers in Grenada,
investments costs 75.000-100.000
USD
• Payback 2-3 years
Page 33
SUMMARY OF WASTE TYPES AND ENERGY YIELD
Waste Type Unit Amount CH4 yield
specific
Total CH4 yield Total
Electricity
(kWh)
Total
Electricity
(MWh)
Solid waste+green waste tons 25000 74 1850000
Animal Waste
Pigs animal places 1500 19 28500
Chicken animal places 4000 164 6560
Tot. Slaughterhouse Waste tons 650 140 91000
Vinasse (total) tons 8000 11 88000
Septage m3 34700 4 138800
Wastewater screenings tons n.n.
2.202.860 8.811.440 8.811
Anaerobic digestion is a renewable energy technology (biogas
production) and mitigation technology (landfill gas avoidance) in one
Page 34
EVALUATION OF THE GRENADA CASE Scenario Criteria
Criteria Scores: 1: low,
5 High
Economic feasibility
(investment/ operation
cost, financial
feasibility/ payback
period)
Environmental benefits
(energy yield/climate,
water resources,
pollution control, odor)
Technological
feasibility (complexity,
availability,
maintenance, etc.)
Strategic
attractiveness
(Private Sector
Involvement,
Nexus)
Final
Score/
Ranking
Scenario 1 a:
Municipal Solid Waste
dry digestion
2 3 3 2 Score: 10
Rank: 5
Scenario 1 b:
Solid Waste
Incineration
1 4 1 2 Score: 7
Rank: 6
Scenario 2:
All-in-one Co-Digestion 3 3 3 2
Score: 11
Rank: 4
Scenario 3:
Anaerobic Digestion of
Distillery Effluent
4 4 4 5 Score: 17
Rank: 1
Scenario 4:
Co-digestion of
Slaughterhouse Waste
and Animal Waste
4 4 4 3 Score: 15
Rank: 3
Scenario 5:
Decentralized digestion
on livestock farms
4 4 4 4 Score: 16
Rank: 2
Page 35
CONTRIBUTION TO ENERGY CONSUMPTION
175,8
100
18,0 10,2
5,4 3,1 6,8 3,9 0,3 0,2 0,7 0,4 0,2 0,1
0,0
20,0
40,0
60,0
80,0
100,0
120,0
140,0
160,0
180,0
200,0
GWh/ year %
GRENLEC Diesel (2013)
SW Incineration (HYDROPLAN)
Scenario 1 (SWM Biogas)
Scenario 2 (Biogas all in one)
Scenario 3 (Clarke's Court)
Scenario 4 (Biogas agro waste)
Scenario 5 (decentralised small scale)
Page 36
CLARKE`S COURT DISTILLERY DISTILLERY
• Clarke’s Court discharges about 127034 gal/ month (559 m3/ month) of
highly polluted brine from the rum distillation process. (6707 m3/year)
• Effluent is highly biodegradable (sugars) and thus contains a significant
energy content.
• Temperature: approx. 70 °C
• BOD: 40000-50000 mg/l
• COD: 60000-80000 mg/l
• TSS: 12000-14000 mg/l
• Effluent causes massive odor development for downstream settlements
• Visible and measurable marine pollution problems in nearby mangroves
at woburn bay.
• Adverse effects on planned tourism projects in Woburn Bay
Page 37
CLARKE`S COURT DISTILLERY
• A biogas plant is wastewater treatment as well as a source of thermal energy
generation for the distillation process.
• Biogas is used as supplement fuel for diesel boiler operation (steam
production). It can replace costly diesel (5 USD/gal).
(Expected biogas output can vary depending on organic content – tests required)
• Conservative calculation for savings:
• 77 000 Nm3CH4/year (11 Nm3/tFM)
• Diesel equivalent: 84 700 liter Diesel/ year (approx. 18615 gal Diesel/
year)
• Savings: 5 USD/gal x 18 615 gal/year = 94,000 USD)
• Optimistic, but reality based calculation (based on other distillery):
• Diesel equivalent: 35 400 gal Diesel/year
• Savings: 5 USD/gal x 35 400 gal/year = 177,000 USD)
Page 38
REQUIRED INVESTMENTS
• Studies
• Baseline study (preliminary study and assessment available)
• Technical design study / bill of quantity/ tender&procuremement
documents
• Equipment
• Biogas plant (either pond system or reactor system with agitator)
• Dewatering unit for biogas
• Adjustment/Upgrade of boiler burner to allow the combustion of biogas
• Optional: Aerobic trickling filter for post treatment of effluent (requires
detailed studies)
Page 39
POND DIGESTER
• Pond covered with gas tight membrane
• Membrane is biogas storage
• Lower investment costs
• Low operation cost
Page 40
REQUIRED INVESTMENTS
• Auxiliary Works
• Basic civil works for installation of digester and auxiliaries
• Rehabilitation/Adjustment of existing storage tank and burner
• Cost SUMMARY (still needs verification)
Estimated required investments US$
Baseline study 10.000
Design study and Bill of Quantity 25.000
Equipment (biogas plant) 500.000
Equipment (auxiliary devices) 120.000
Total 655.000
Page 41
DPP FINANCING CONCEPT • Annual O&M Cost: 3 % of investment, considering the current fuel prices,
pay-back of an investment is expected within 7 years
• A GIZ supported project (Development Partnership with the Private Sector
– DPP, or Water Stewardship Project) could support a set up of new
energy contracting approach for distilleries and provides know-how for
operation of system
• Upfront investment by a consortium could be refinanced by energy savings
• Costs could be divided as follows:
• GIZ: up to 25 %, Private Partners: up to
• Clarke’s Court distillery signs a refinancing contract with a DPP
investor consortium (e.g. Clarke’s Court, Clarke’s Court Marina,
Technology Provider), achieved energy savings are used as pay-back
to investor consortium
Page 42
DPP Management Concept
DPP Contract
Energy Saving
Contract
• Technical design and
baseline study
• Support establishment of
consortium
• Support contract
development&monitoring
• Support part of procurement
and installation of biodigester
• Operation of system by
technology provider in
cooperation with Clarke’s
Court distillery
• Training and Maintenance
• Monitoring of biogas
generation and diesel
replacement
• Ensuring reliability for
contract period
Page 43
• Presentation of concept to Clarke’s Court Management → Commitment/ Financial
Contribution
• Set-Up of Consortium Partners (potential: Clarke’s Court, Clarke’s Court Marina
Investors, Technology Provider
• Potentially: Search for additional (commercial) investors, soft loans,….
• GIZ supports contract development (studies, contract documents) and will also have a
minor share in the investment costs
• Clarke’s Court and consortium approve concept and project – go into contract
negotiation
NEXT STEPS
Proceeding simultaneously
DPP Contract between
GIZ and private
companies signed
MoA between Private
Investors, GIZ and
Technology Provider
companies signed
(roles, responsibilities,
etc.)
Energy Contracting
contract to be signed
between Private
Investors and
Technology Provider
Page 44
Technology
Provider x % of Investment
Technology
Training
Private
Investors (e.g.
CCD/ CCM) y % Investment
Land
GIZ (DPP) Supports contract
development and
tender process,
logistics
z % of Investment
Investment:
Anaerobic Digestion + Sandfilter
Solar Pre-Heating System for Boiler
Systems operation by Technology Provider
Energy
Savings
Energy savings used to pay back
upfront investment
PH
AS
E 1
of
En
erg
y S
avin
g C
on
tract
Page 45
Technology
Provider
Maintenance
contract ??
Private
Investors Operation &
Maintenance (?)
Investment:
Anaerobic Digestion + Sandfilter
Solar Pre-Heating System for Boiler
Systems operation by ??
Energy
Savings After payback all energy savings
remain at Clarke‘s Court (and other
investors?)
Pays Technology Provider for
Maintenance/ Services
PH
AS
E 2
of
En
erg
y S
av
ing
Co
ntr
ac
t
Page 46
CONCLUSIONS FOR THE GRENADA CASE AND IN
GENERAL FOR THE CARIBBEAN
• Biogas can cover a fraction of the energy demand (in Grenada:
max: 6-8 % of total demand)
• Anaerobic digestion is lower in investment costs and less complex with
regard to O&M
• Under current framework: small-scale system with a direct reuse
potential of the gas are preferable (distilleries, slaughterhouses)
• Solid waste could be co-digested with other wastes in order to increase
the gas potential
• Large-scale systems are attractive even for BOT contracts, if a higher
feed-in tariff for electricity can be negotiated
• Digestate has a high reuse potential (compost or secondary fuel)
• Production of energy plants for anaerobic digestion - new market?
Page 47
CONFERENCE ON WASTE MANAGEMENT IN THE
CARIBBEAN, NOVEMBER 17-20, 2015 IN GRENEDA:
Toward the Development of Caribbean Regional
Organic Waste Management Sector
The workshop will be organized in partnership with:
• CARICOM Secretariat;
• Gesellschaft für Internationale Zusammenarbeit (GIZ-REETA
Program);
• Caribbean Community Climate Change Centre (CCCCC) and SIDS
DOCK;
• Caribbean Development Bank (CDB);
• United Nations Industrial Development Organization (UNIDO);
• Swedish Energy Agency (SEA);
• World Intellectual Property Organization (WIPO);
• Clinton Foundation Climate Initiative (CCI).
Thank you for your attention!