Engineering the transformationCapital Markets Day

17 October 2013

Brian GreensmithJason Shipstone

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Agenda

• Our journey - 10 years of biomass experience

• Why we made the choices we made

• How our systems evolved

• Combustion and fuel chemistry

• What we have we built

• Progress to date

• Questions

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To explain the tube map…..

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Coal

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Coal and Early Biomass

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Co-firing

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R&D - Developing our IP

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R&D - Developing our IP

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Pilot DI (Direct injection)

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Co-firing facility

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Dedicated biomass plant

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Co-firing

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Milling – what did we learn?

Ball mill Hammer mill

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Hazards – key lessons learned

Storage fires and self heating

Creeping fires, horizontal ledges

Bespoke fire detection

Biomass dust - Gunpowder

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Ambition “Predominantly Biomass”

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Full scale unit trials – increasing the percentage

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Full scale unit trials – increasing the percentage

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Bunker dust management

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Combustion modifications

Mills Burners

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Combustion modifications

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Wall tube slag

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Pendant tube slag

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Late combustion

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Tube fouling

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High exit temperature

Primary Air Cooler

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Precipitator fouling

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Fuel portfolio chemistry

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SEM use

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Additive trials

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Additive “trials”

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Fuel portfolio chemistry

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Ecostore & Boiler Distribution System

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Tender process

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Ecostore & Boiler Distribution System

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Ecostore & Boiler Distribution System

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Construction

From start to commissioning….

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March ‘13

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Today

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Program risk management

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Commissioning

Interim systems 1

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Commissioning

Interim systems 2

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Commissioning

Interim systems 3

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Commissioning

Interim systems 4

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Commissioning

Interim systems 5

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Commissioning

Performance

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PerformanceCommissioning

Optimisation

Expansion

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Transition to Permanent Biomass Facilities

Transition of 1st converted unit

Q4 2013 phased commissioning ofnew on-site facilities

Fuel delivery and distribution

Storage – 1 dome in service

Unit modifications

On schedule to be complete by year end

2014 schedule

Q1 – 2 domes in service

Q3 – all 4 domes in service

Summer 2014 conversion of 2nd unit

Optimisation work continuing

Efficiency management, fuel envelope,NOx

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September2013

December2013

StartCommissioning

FullyOperational

Fuel Distribution

Rail Delivery

Hull Port Facility

50 Rail Wagons

First DomeFuel Distribution

Rail Delivery

First Dome

Hull Port Facility

Mill Conversions

Timeline for First Unit Transition

►Drax Group plc

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Engineering the transformationCapital Markets Day

Any Questions?

Brian GreensmithJason Shipstone