giz: regional waste-to-energy collaborative

8/20/2019 GIZ: Regional Waste-to-Energy Collaborative

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+ EUR 3 mio.• Financial sector

CARICOM-GIZ PROJECT PORTFOLIO IN THE FIELDOF ENERGY

26.06.2015

2011 2012 2013 2014 2015 2016 2017 2018… …

SFF-CDBEUR 0,25 mio.

CREDP II04/2008-03/2016EUR 8,95 mio.

REETA07/2013-06/2017, EUR 5 mio.

• Regional strategy• Capacity building• Private sector• Model projects


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Page 326/06/2015

Component 1

RegionalStrategy

(C-SERMS)

Objective:

Regional and national stakeholders in the field of Renewable Energy andEnergy Efficiency are increasingly able to meet the political, organizational

and technical challenges of a growing market in the Caribbean region

Component 2

CapacityBuilding

updated

REETA – OBJECTIVE & COMPONENTS

Component 3

Private Sector

Component 4

Model Projects

Component 5

FinancialSector

New!


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REGIONAL WASTE TO ENERY COLLABORATIVE

Actor, Donor, Development Partner,

StakeholderActivities

CARICOM ENERGY UNITHarmonization of political and regulatory

framework, coordination

GIZ REETA PROGRAMTechnical 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 approachesneeded!


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WASTE TO ENERGY

• Incineration: Controlled Burningof Waste

• Anaerobic Digestion: treatmentof the organic fraction of solid and

liquid wastes

• Secondary Fuels: Conditionedrecycled waste or recyclingresidues

• Origin of Wastes: households,

hotels & restaurants, markets,agro-industries (sugar, rice, etc.),breweries and distilleries, animalfarms (chicken, pig, etc.),slaughterhouses, vegetable andfruit farms, wastewater treatment


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CARICOM Organic and Plastic Waste Potentials

CARICOMStatus

Country Population

(last census)

Estimated averageWaste

(kg / Year)1.5 Kg/day per

person

Estimated Waste(Tonnes / Year)

OrganicWaste

(%)

PlasticWaste

(%)

OrganicWaste

(Tonnes / Year)

PlasticWaste

(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

S AINT VINCENT ANDTHE GRENADINES

103.000

56.392.500

56.393

50%

10% 28.196 5.639

Full

SURINAME (REPUBLICOF)

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).

https://en.wikipedia.org/wiki/The_Bahamashttps://en.wikipedia.org/wiki/Dominicahttps://en.wikipedia.org/wiki/Saint_Vincent_and_the_Grenadineshttps://en.wikipedia.org/wiki/Surinamehttps://en.wikipedia.org/wiki/Trinidad_and_Tobagohttps://en.wikipedia.org/wiki/Surinamehttps://en.wikipedia.org/wiki/Surinamehttps://en.wikipedia.org/wiki/Saint_Vincent_and_the_Grenadineshttps://en.wikipedia.org/wiki/Saint_Vincent_and_the_Grenadineshttps://en.wikipedia.org/wiki/Saint_Luciahttps://en.wikipedia.org/wiki/Saint_Kitts_and_Nevishttps://en.wikipedia.org/wiki/Montserrathttps://en.wikipedia.org/wiki/Jamaicahttps://en.wikipedia.org/wiki/Haitihttps://en.wikipedia.org/wiki/Guyanahttps://en.wikipedia.org/wiki/Grenadahttps://en.wikipedia.org/wiki/Dominican_Republichttps://en.wikipedia.org/wiki/Dominicahttps://en.wikipedia.org/wiki/Dominicahttps://en.wikipedia.org/wiki/Belizehttps://en.wikipedia.org/wiki/Barbadoshttps://en.wikipedia.org/wiki/The_Bahamashttps://en.wikipedia.org/wiki/The_Bahamashttps://en.wikipedia.org/wiki/Antigua_and_Barbuda


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CARIBBEAN REGION WASTE-TO-ENERGY (WTE)INDICATIVE PROJECT PIPELINE

COUNTRY PROJECT TITLE

ESTIMATEDPROJECT

COST(USD)

FINANCINGREQUIRED

(USD)

ANTIGUA &BARBUDA

Integrated Bioenergy and Food Production: Theproject pre-feasibility has been completed for thisproject that would establish of approximately 500acres of grain sorghum on the island of Barbudathat would be used to produce broiler meat, and thewaste produced would be used to generate biogasfuel which would displace diesel for powergeneration.

5.400.000 5.400.000

BAHAMAS(COMMONWEALTH

OF)

Feasibility Study for the establishment of a SolidWaste-to-Energy Facility on New Providence: Theisland of New Providence generates in excess of1,000 tons, per day, of solid waste, dominated bypackaging material, enough raw material to exportin excess of 20MW of firm power to the grid from awaste-to-energy facility. The feasibility study willdetermine the best system to use and relative costbenefits to aid government decision making indeveloping a public/private partnership to

implement the project if proved feasible.

250.000 250.000


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BELIZE

Feasibility Study on Distributed Generation to GenerateBase Load Power for Grid Connection: Communitywaste-to-energy projects; Feasibility studies will identifysystems that are operational at the scale of 500-2000residences than can generate reliable base load powerfor grid connection.

30.000 30.000

BELIZE

Belize Biogas from Wastewater and Manure: TheGovernment of Belize and SIDSDOCK are developing ananaerobic digestion/biogas project at the waste waterfacility in San Pedro Ambergris Caye. The project willuse livestock manure. The developers plan to negotiate aPPA with Belize Water Services Limited (BWSL). Theproject will produce biogas for electricity, fertilizerresulting 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 WaterTreatment System: The majority of small communities inisland states do not have waste water treatmentsystems. Alternative waste water system modular indesign that uses active biofilms for the decomposition oforganic matter, requiring significantly less energy inputthan the conventional sewage systems will bedemonstrated to provide evidence of feasibility,

comparative energy requirement and potentialcontribution to water resource availability as part ofclimate change adaptation

150.000 150.000


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DOMINICANREPUBLIC

Commercial demonstration project for sea water desalination --project is to provide potable water, using the waste heat from thepower plant as the primary energy source. Waste heat from powerplants is major non-utilized energy resources in the SIDS, andcould be used to improve availability of potable water, asprojection are for island states will be become increasingly freshwater stressed and will have to depend increasingly ondesalination and water harvesting, and recycling of waste water. 1.000.000

GRENADA

Waste-to-Energy Feasibility Study: The mountainous topographyof the country presents major challengers for the collection anddisposal of solid waste. The current situation is resulting inpollution of the coastal area and deteriorating air quality forcommunities located in proximity to the facility. Current volumesof waste indicate feasibility for a 2-3 MW base load facility

55.000 55.000


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CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

JAMAICA

Feasibility study for a waste to energy system for the production of aminimum of 30 MW from the Riverton City solid waste facility, whichhandles 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 wastedisposal facility is located 2 miles for the major sewage treatmentwhich is being expanded to treat some 60 million gallons of wastewater per day. The feasibility study will determine the best option formaximizing 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 TechnicalAssistance to Caribbean Governments to evaluate the potentialviability of waste-to-energy projects as an alternative to the ongoingsocial, environmental and financially costly disposal that is now thecase. Due to limited land availability, growing population andincreased importation of goods, many countries are facing problemswith the management of the various forms of waste, ranging frommunicipal, sewage, medical, to agro-industrial waste. In many cases,there is improper disposal of waste. The potential projects to beevaluated include:· Utilization of rum distillery waste

· Conversion of sewage· Conversion of municipal solid waste and other available biomassresources into energy. Projects identified as potentially feasibilitywill be developed through private-public partnerships and the fundsprovided would be refunded to support development of otherprojects

1.200.000

1.000.000

SAINT LUCIA Sewage Waste to Energy: Project is intended to produce fuel from acombination of sewage and biomass from markets and othersources to provide 1 MW of base load power and 3 MW of thermalheat for cooling of commercial buildings in downtown Castries

7.000.000

Pre-feasibility StudyOn- 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 loadpower to the grid. From the waste at the Castries solid waste facility

25.000.000


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SAINT LUCIA

Waste Heat to Power Project: The base load of thecountry is 40 MW and based on waste heatrecovery system there is potential for a project torecover up to 4 MW of base load power.Prefeasibility has shown power from such aproject at US$0.21per kwh

21.000.000

SAINT VINCENT ANDTHE GRENADINES

Sewage and biomass property waste to Energy:The new Argyle International airport is beingestablished a low carbon facility. Energy forlighting and cooling will be provided 100 kw PVsystem, and other RE combination includingbiogas. Based on preliminary assessment therese is enough inlay materials carry the potentialto produce enough biogas for 0,5 MW electricity

for 8,300 operational hours per year.

3,000,000 TOR for

prefeasibility studybeing prepared


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WASTE TO ENERGY INVESTMENTS IN THE

CARIBBEANCountry 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 electricityImplementation: 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: IncinerationCapacity: 1.7 MW of electricity

[


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THE GRENADA CASE

• Municipal Solid Waste

• High-calorific effluents

• Wastewater

• Agricultural / AnimalWaste

• Plant Residues

• Slaughterhouse Waste


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THE ENERGY SECTOR IN GRENADA

• Grenada has one of the highest electricity prices in the Caribbean andworldwide: 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 andUSD 82 for a 100 pound cylinder.


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INSTALLED CAPACITY AND PEAK ENERGYDEMAND IN GRENADA

Grenlec Annual Report , 2013

25,5 25,9

23,825,7

27,929,4 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 200420052006 2007200820092010 201120122013

P e a k D e m a n d ( M W )

0,3 MW Solar


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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 andcommercial waste/year

• Domestic waste has about 45 %organic fraction (27 % based ontotal waste)

• Landfill space is very limited,new developed cells will lastonly 7 years without recyclingconcept

• Incineration would prolonglandfill use to 25 years, but iseconomically not viable.


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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) orsecondary fuels – reduction of fossil fuels

• Management of wood waste as fuel/secondary fuel

• Recycling prolongs the life span of existing landfills – improvedmanagement

• Incineration – waste as renewable energy source

• Climate adaptation by protecting water resources and enriching soilswith organic fertilizers from processed waste


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INCINERATION AS AN OPTION FOR GRENADA

• Advantage with regard to volumereduction of waste and energyoutput 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 energysector required


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WASTEWATER MANAGEMENT (NAWASA)

• Sewage system in St. Georges: fall out pipe at the stadium bridgewith an average flow of 130.000 gal/day (28,6 m3/ day or 10.451m3/year)

• Sewage system along Grand Anse: fall out pipe at Point Salines withan 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


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MECHANICAL FILTER SYSTEM FOR WASTEWATER

• Two-stage micro filtrationtechnology (6 - 0,1 mm)

• TSS reduction of 30-60 % and aCOD reduction of 10-30 % withminimal land requirements andreasonable costs

• Solid residues have high energycontent with regard to biogasproduction

• Improves water quality

• Provides input for biogas

• Fertilizer


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TYPICAL INPUT MATERIAL FOR ANAEROBICDIGESTION

• Animal manure

• Organic solid waste like food

residues, grass, domestic waste

• Processed biomass and wastewaterfrom agro-industries (e.g. distilleries,breweries, dairy side products)

• Slaughterhouse waste• Energy plants such as corn, sugar

cane, grass

• Sewerage sludge and blackwaterfrom septic tanks

SolidWaste

LiquidWaste


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BIOGAS GENERATION

• Anaerobic digestion is the microbiological breakdown of organicmaterials in the absence of oxygen

• Anaerobic digestion works under mesophilic (35-42 °C) as well asunder thermophilic (50-60°C) conditions

• Biogas contains between 50 and 70 % methane, depending on theinput material

• Biogas can be directly used as fuel or further upgraded to bio-methanewith a higher calorific value

• Rule of thumb: energy content of 1 m3 biogas (60 % methane) equalsabout 6 kWh or 0,6 liter domestic fuel oil

• Broad range of technologies available!


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SMALL-SCALE DIGESTERS

• High-tech material for low-techapplications

• Applicable for small animal farms

and agro-industries• Modular from 3 m3-100 m3 volume

• Direct use of gas for cooking andhot-water generation

• Except of the membrane tank, allmaterials locally available


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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 orpumps for mixing

• Retention time: 20-60 days


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DRY-ANAEROBIC DIGESTION

• Often used for presorted organicsolid waste

• TS content of 28 – 35 % -and doesnot 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


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MANAGEMENT OF DIGESTATE

• High in nutrients: reuse as liquidfertiliser

• Dewatering/Drying: Secondary

Fuel

• Aerobic Composting: Fertiliser

• Dewatering (if required): Landfillcover


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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


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SCENARIO 1: MUNICIPAL SOLID WASTE

DIGESTIONHYDROPLAN

Assumptions

(2009)

GICON

Assessment

(2014)

Technology

applied

Wet-Thermophilic

SystemDry-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 orsecondary fuel

• Investment costs of about 5

Mio. USD


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SCENARIO 2: „ALL IN ONE“ – CO-DIGESTION OFWASTE (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


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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


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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 reusedat facility

• Digestate reuse as fertilizer• Investment: estimated 0.5 Mio. USD


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SCENARIO 5: DECENTRALIZED SMALL SCALESYSTEMS

• Small-scale farmers (e.g. 10 pigs)

• Direct use of gas as substitute forLPG in households and agro-

industries

• Water-shed appraoch – to protectwater sources

• 50 small scale farmers in Grenada,investments costs 75.000-100.000USD

• Payback 2-3 years


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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 1850000Animal 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 (biogasproduction) and mitigation technology (landfill gas avoidance) in one


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EVALUATION OF THE GRENADA CASEScenario 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 Wastedry 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 ofDistillery 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


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CONTRIBUTION TO ENERGY CONSUMPTION

175,8

100

18,010,2

5,4 3,16,8 3,90,3 0,20,7 0,40,2 0,10,0

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)


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CLARKE`S COURT DISTILLERY DISTILLERY

• Clarke’s Court discharges about 127034 gal/ month (559 m3/ month) ofhighly polluted brine from the rum distillation process. (6707 m3/year)

• Effluent is highly biodegradable (sugars) and thus contains a significantenergy 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 mangrovesat woburn bay.

• Adverse effects on planned tourism projects in Woburn Bay


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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 (steamproduction). 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)


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REQUIRED INVESTMENTS

• Studies

• Baseline study (preliminary study and assessment available)

• Technical design study / bill of quantity/ tender&procuremementdocuments

• 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 (requiresdetailed studies)


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POND DIGESTER

• Pond covered with gas tight membrane• Membrane is biogas storage• Lower investment costs• Low operation cost


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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


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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 foroperation 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


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DPP Management Concept

DPPContract

EnergySaving

Contract

• Technical design andbaseline study

• Support establishment of

consortium• Support contract

development&monitoring• Support part of procurement

and installation of biodigester

• Operation of system bytechnology provider incooperation with Clarke’s

Court distillery

• Training and Maintenance• Monitoring of biogas

generation and dieselreplacement

• Ensuring reliability forcontract period


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• Presentation of concept to Clarke’s Court Management → Commitment/ FinancialContribution

• Set-Up of Consortium Partners (potential: Clarke’s Court, Clarke’s Court MarinaInvestors, 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 contractnegotiation

NEXT STEPS

Proceeding simultaneously

DPP Contract betweenGIZ and private

companies signed

MoA between Private

Investors, GIZ andTechnology Providercompanies signed

(roles, responsibilities,etc.)

Energy Contracting

contract to be signedbetween Private

Investors andTechnology Provider


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TechnologyProvider

x % of InvestmentTechnology

Training

Private

Investors (e.g.CCD/ CCM)y % Investment

Land

GIZ (DPP)Supports contractdevelopment andtender process,

logisticsz % of Investment

Investment: Anaerobic Digestion + Sandfilter

Solar Pre-Heating System for Boiler

Systems operation by Technology Provider

EnergySavings

Energy savings used to pay back

upfront investment

P H A S E 1 o f E n e r g y S

a v i n g C o n t r a c t


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Page 45

TechnologyProvider

Maintenancecontract ??

PrivateInvestorsOperation &

Maintenance (?)

Investment: Anaerobic Digestion + Sandfilter

Solar Pre-Heating System for Boiler

Systems operation by ??

EnergySavings

After payback all energy savingsremain at Clarke‘s Court (and other

investors?)

Pays Technology Provider forMaintenance/ Services

P H A S E 2 o

f E n e r g y S a v i n g C o n t r a c t


46/47

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 increasethe gas potential

• Large-scale systems are attractive even for BOT contracts, if a higherfeed-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?


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CONFERENCE ON WASTE MANAGEMENT IN THE

CARIBBEAN, NOVEMBER 17-20, 2015 IN GRENEDA:

Toward the Development of Caribbean RegionalOrganic 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!

giz: regional waste-to-energy collaborative

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