Carbon Accounting and Management in the Water Industry Carbon Accounting Conference 11 th  March 2009 Heriot Watt Universi...
The challenge <ul><li>Vast business </li></ul><ul><li>Complex activities </li></ul><ul><li>Energy intense </li></ul><ul><l...
Investment and energy intensity <ul><li>2002-2010 £4bn in quality enhancement </li></ul><ul><ul><li>Improved infrastructur...
Carbon accounting: seeking a common water industry approach <ul><li>Strong UK water industry approach – consistency </li><...
Dominant GHG emissions from the water industry <ul><li>CO 2  – direct and indirect from fuel and electricity </li></ul><ul...
The “Whole Life Carbon” challenge:   -  making the right choices - evolving a sustainable asset base <ul><li>Carbon embedd...
From “Carbon accounting in the UK water industry: Guidelines for dealing with ‘embodied  carbon’ and whole life carbon acc...
Operational Boundaries (adapted from Figure 5.2, UKWIR, 2007) Operational  activities from  leased buildings Sludge  trans...
Raw  Water Abstraction  Water Distribution Sewage Treatment Treatment Sewage Collection Discharge 2006-7 Carbon Footprint ...
A Water Footprint Breakdown
<ul><li>Wastewater  = 45% </li></ul><ul><li>Sewerage  = 13% </li></ul><ul><li>Water = 30% </li></ul><ul><li>Water supply  ...
Improving operational footprinting <ul><li>Ongoing measurement and tracking </li></ul><ul><li>More ‘granular’ reporting </...
Capital Emissions: First construction Site Preparation  Commissioning Construction Demolition Clearance Waste Transport Co...
Current Capital Programme – initial assessment <ul><li>“ top down” using “bottom up” case studies </li></ul><ul><li>£ buil...
Our ambition <ul><li>Develop WLC tools that will allow carbon accounting in capital programme </li></ul><ul><li>Enable des...
“ Doing the right thing” <ul><li>Carbon mitigation strategy </li></ul><ul><ul><li>Proactive </li></ul></ul><ul><ul><li>Con...
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Water | Mark Williams

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Water | Mark Williams

  1. 1. Carbon Accounting and Management in the Water Industry Carbon Accounting Conference 11 th March 2009 Heriot Watt University Dr Mark Williams Business Strategy and Climate Change Manager
  2. 2. The challenge <ul><li>Vast business </li></ul><ul><li>Complex activities </li></ul><ul><li>Energy intense </li></ul><ul><li>Major capital investment </li></ul><ul><li>Long-life assets </li></ul>
  3. 3. Investment and energy intensity <ul><li>2002-2010 £4bn in quality enhancement </li></ul><ul><ul><li>Improved infrastructure, service, quality </li></ul></ul><ul><ul><li>Increased treatment intensity </li></ul></ul><ul><li>But – 2.5% annual rise in energy demand </li></ul><ul><li>One of Scotland’s largest consumers </li></ul><ul><li>of electricity </li></ul>
  4. 4. Carbon accounting: seeking a common water industry approach <ul><li>Strong UK water industry approach – consistency </li></ul><ul><li>Long history of development </li></ul><ul><li>Operational, embodied, supply chain </li></ul><ul><li>Guidance on Whole Life Costing </li></ul>
  5. 5. Dominant GHG emissions from the water industry <ul><li>CO 2 – direct and indirect from fuel and electricity </li></ul><ul><li>CH 4 – direct from sewage and sludge processes </li></ul><ul><li>N 2 O – direct from sewage and sludge processes </li></ul>
  6. 6. The “Whole Life Carbon” challenge: - making the right choices - evolving a sustainable asset base <ul><li>Carbon embedded in materials </li></ul><ul><li>Carbon emitted during construction </li></ul><ul><li>Carbon emitted during capital maintenance </li></ul><ul><li>Carbon emitted during operation </li></ul>
  7. 7. From “Carbon accounting in the UK water industry: Guidelines for dealing with ‘embodied carbon’ and whole life carbon accounting”, UKWIR 08/CL/01/6 CO2 from direct and indirect energy use See Phase 1 First Construction See Phase 2 (Section 2 + Section 3) N 2 O, CH 4 from processes See Phase 1 Capital maintenance and renewal See Phase 2 (Section 4.3.4) Construction – Embodied emissions Operation and Maintenance – Operational emissions Embodied Emissions DEFRA Guideline Emissions Non - Defra Emissions FF CO 2 emissions* Other GHG emissions + *CRC, ROCs and EU ETS all only consider Fossil Fuel CO 2 but their rules differ in detail. + + Home water heating Local customer water recycling or harvesting investment Water N 2 O emissions downstream of effluent discharges See Phase 2 (Section 5) Excluded emissions (examples) Embodied Emissions CO2 from direct and indirect energy use First Construction N 2 O, CH 4 from processes Chemicals for Treatment Capital maintenance and renewal Construction – Embodied emissions Whole Life Carbon Emissions Operation and Maintenance – Operational emissions Embodied Emissions DEFRA Guideline Emissions Non - Defra Emissions CO 2 emissions* Other GHG emissions + *CRC, ROCs and EU ETS all only consider Fossil Fuel CO 2 but their rules differ in detail. + + Home water heating Local customer water recycling or harvesting investment Water N 2 O emissions downstream of effluent discharges Excluded emissions (examples) Embodied Emissions
  8. 8. Operational Boundaries (adapted from Figure 5.2, UKWIR, 2007) Operational activities from leased buildings Sludge transport and disposal Waste water treatment Water treatment Sludge treatment PFI Company Direct and indirect emissions Scottish Water
  9. 9. Raw Water Abstraction Water Distribution Sewage Treatment Treatment Sewage Collection Discharge 2006-7 Carbon Footprint <ul><li>Scotland: 8% of UK population </li></ul><ul><li>Scottish Water: 10.6% of UK Water Industry emissions </li></ul>469,000 tonnes CO 2 e
  10. 10. A Water Footprint Breakdown
  11. 11. <ul><li>Wastewater = 45% </li></ul><ul><li>Sewerage = 13% </li></ul><ul><li>Water = 30% </li></ul><ul><li>Water supply = 9% </li></ul><ul><li>Others = 3% </li></ul><ul><ul><ul><ul><ul><li>100% </li></ul></ul></ul></ul></ul>66% Grid electricity: 13% Gas 9% Sludge Process emissions 6% WW process emissions 2.2% Skip Waste 0.3% Water treatment process emissions 3.5% Transport & Travel A Water Footprint Breakdown
  12. 12. Improving operational footprinting <ul><li>Ongoing measurement and tracking </li></ul><ul><li>More ‘granular’ reporting </li></ul><ul><li>Management at asset level </li></ul><ul><li>Supply chains </li></ul>
  13. 13. Capital Emissions: First construction Site Preparation Commissioning Construction Demolition Clearance Waste Transport Concrete Steel Aggregates Waste Plant Pumping Sampling mileage Non Infrastructure Site Preparation Commissioning Construction Demolition Clearance Waste Transport Concrete Steel Aggregates Waste Plant Pumping Sampling mileage Excavation Pipe work Waste Transport Materials Waste Infrastructure Excavation Pipe work Waste Transport Materials Waste
  14. 14. Current Capital Programme – initial assessment <ul><li>“ top down” using “bottom up” case studies </li></ul><ul><li>£ built from aggregating ‘construction components’ </li></ul><ul><li>Carbon tagged to components/sub-components </li></ul><ul><li>Testing using case studies - extrapolate across programme </li></ul><ul><li>Circa 1.4m tonnes 2006-2010 </li></ul>
  15. 15. Our ambition <ul><li>Develop WLC tools that will allow carbon accounting in capital programme </li></ul><ul><li>Enable design engineers to account for carbon </li></ul><ul><li>Build capability to make sustainable decisions </li></ul>
  16. 16. “ Doing the right thing” <ul><li>Carbon mitigation strategy </li></ul><ul><ul><li>Proactive </li></ul></ul><ul><ul><li>Contributing towards Scotland’s targets </li></ul></ul><ul><ul><li>Reducing demand </li></ul></ul><ul><ul><li>Renewable generation </li></ul></ul><ul><ul><li>Building a sustainable business </li></ul></ul>

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