121994Xxxx-141-001-1 LROA Energy Masterplan Report
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Intended for London Borough of Barnet Document type Report Date 08 August 2014 COLINDALE ENERGY MASTERPLAN COLINDALE ENERGY MASTERPLAN Revision Draft Final Report Date 08/08/2014 Made by Richard Harrap/Sophie Schorah Checked by Anthony Riddle Approved by Crispin Matson Description Colindale – Energy Masterplan Ref Report 001 61033341 Doc ID 345428-19 Ramboll Energy 60 Newman Street London W1T 3DA T +44 (0)20 7631 5291 ww.ramboll.com COLINDALE ENERGY MASTERPLAN CONTENTS EXECUTIVE SUMMARY 6 1. Introduction, Background and Methodology 9 1.1 Background 9 1.2 Objectives 10 1.3 Previous Work Undertaken 10 1.4 Other Local Authority involvement in DH projects in London 10 1.5 Report Structure 12 2. Energy Demand Appraisal 13 2.1 Existing and Proposed Developments 13 2.2 Centres of Development by AAP designation 14 2.3 Heat Mapping Assessment for Centres of Development 25 2.4 Heat Demand Phasing 25 3. Energy Supply Appraisal 28 3.1 Energy Centre location 28 3.2 Grahame Park Boiler House 30 3.3 Existing Supply Opportunities within the Study Area 32 3.4 Planned Supply Opportunities within the Study Area 33 3.5 Other Low Grade Waste Heat Opportunities 34 4. Heat Network Infrastructure Proposals 35 4.1 Route Assessment and Viability 35 4.2 Network Sizing 36 4.3 Heat Network Control Concept 38 4.4 Grahame Park Energy Centre 39 4.5 Accumulators 40 4.6 Consumer Connections 40 5. Heat Network Opportunity Appraisal 43 5.1 Methodology 43 5.2 Business as Usual Scenario – Individual Developer Solutions 43 5.3 District Heating Network Scenario 44 5.4 Assumptions and Scenarios Modelled 45 5.5 Modelling Results 48 6. Project Outline Risk Assessment 52 7. Next Steps and Implementation Plan 55 7.1 Immediate Actions to Progress the Identified District Heating Opportunity 55 7.2 Stakeholder Engagement 56 7.3 Planning Related Recommendations 58 7.4 Technical Safeguarding Measures 58 7.5 Establishing London Borough of Barnet as an Allowable Solutions Provider 61 8. References 62 COLINDALE ENERGY MASTERPLAN APPENDICES Appendix 1 Summary of Heat Mapping Undertaken for Colindale Appendix 2 Investment and Carbon Appraisal Model Assumptions Appendix 3 Cost And Carbon Plans for Scenario 1 Opportunity TABLES Table 1 Grahame Park Heat Loads by Phase ...................................... 15 Table 2 Peel Centre Estimated Heat Demands .................................... 19 Table 3 Colindale Hospital and Surrounding Estimated Heat Demands .......................................................................................................... 20 Table 4 Summary of Colindale AAP sites A, B and C ........................... 22 Table 5 Grahame Park Energy Centre (E.On) Scenario 1 (Full Network) Plant Capacities ................................................................................. 32 Table 6 Fairview (E.On) Installed Plant Capacities ............................ 33 Table 7 Provisional Pipe Schedule ...................................................... 37 Table 8 Heat Exchanger Space Requirements .................................... 42 Table 9 Business as Usual Descriptions for Colindale Development Areas ................................................................................................. 44 Table 10 Description of Modelling Scenarios ...................................... 47 Table 11 Scenario Modelling Outcomes .............................................. 48 Table 12: Variable factors explored in Scenario 3 .............................. 49 Table 13 Summary of modelling results for 25 year Project Lifetime . 50 Table 14 Demand overview ................................................................ 66 Table 15: Pipe Cost Assumptions ....................................................... 67 Table 16: Summary of project CAPEX for Scenario 1 .......................... 68 Table 17: Heat Tariff Assumptions ..................................................... 70 Table 18: Heat Network Design Parameters ...................................... 73 Table 19 Cost and Carbon Plan for Scenario 1 over 25 years - Full Area .......................................................................................................... 75 FIGURES Figure 1 Proposed Scheme Layout ....................................................... 8 Figure 2 Location of the Colindale Regeneration Area with the London Borough of Barnet................................................................................ 9 Figure 3 Locations of decentralised energy schemes in London as given in the GLA’s Powering Ahead document ............................................ 11 Figure 4 Plot from the Area Action Plan (AAP) Showing the Numbering System ............................................................................................... 13 Figure 5 Barratt Homes Development ................................................ 14 Figure 6 Grahame Park Masterplan by Phase ..................................... 15 Figure 7 The RAF Museum Showing the Building Layout with the Existing Boiler House to the North ..................................................... 16 Figure 8 Proposed Decentralised Network at the Former Peel Centre 18 Figure 9 Phase Plan and Location of Energy Centre for the Colindale Hospital Site and Surrounds .............................................................. 20 Figure 10 Plan of the Zenith House Development Showing the Location of the Energy Centre .......................................................................... 21 COLINDALE ENERGY MASTERPLAN Figure 11 Connected Developments by Year ...................................... 24 Figure 12 Projected Growth in Heat Demand Over the 25 Year Project Lifetime ............................................................................................. 25 Figure 13 Projected Growth in Heat Demand Shown Per Phase of Development...................................................................................... 26 Figure 14 Heat Map and the coordinated network for the Colindale Regeneration Area ............................................................................. 27 Figure 15 Possible Energy Centre Locations within Colindale for an Area Wide District Heating Network .................................................. 28 Figure 16 CHP assets existing and proposed in the CRA by size ......... 29 Figure 17 Existing Grahame Park Energy Centre Location Shown at the Corner of Long Mead and Corner Mead .............................................. 30 Figure 18 Existing Grahame Park Boiler House Basement .................. 31 Figure 19 Proposed Network Route ................................................... 35 Figure 20 Proposed Network Shown by Construction Phase .............. 36 Figure 21 SR Modelling Image ........................................................... 37 Figure 22 Typical Pressure Distance Diagram for Variable Volume Network ............................................................................................. 38 Figure 23 Indicative Distribution Pumping Station Schematic Arrangement ...................................................................................... 39 Figure 24 Distribution of Heat Demand .............................................. 40 Figure 25 Heat Exchanger Substation ................................................ 41 Figure 26 Typical HIU without front cover ......................................... 41 Figure 27 Typical Substation Connection Arrangement (image courtesy of LDA/GLA) ...................................................................................... 41 Figure 28 Normalised Daily Space Heating and Hot Water Profile Assumed for Residential Buildings ..................................................... 47 Figure 29 Annual Energy Demand Profile of Scenario 3 ..................... 49 Figure 30 Simple and Discounted Cash Flow under Scenario 3 Electricity Sale Price (1) .................................................................... 50 COLINDALE ENERGY MASTERPLAN EXECUTIVE SUMMARY Objectives and Approach The London Borough of Barnet and the Greater London Authority (GLA) have commissioned Ramboll Energy to undertake a decentralised Energy Masterplan (EMP) study to identify the opportunity for developing a decentralised energy heat network within the Colindale Regeneration Area (CRA). The purpose of the study is to establish an EMP based on decentralised energy serving the Colindale Regeneration Area, as defined in the Colindale Area Action Plan (AAP). The EMP shall determine the extent of a decentralised energy that has the potential to supply market competitive, low carbon energy to new developments and existing properties. The specific objectives of this study can be summarised as follows: Identify energy loads and determine the current and future energy demand and supply balance. Determine an overarching district heating (DH) network connecting to and utilising existing and future low to zero carbon energy sources supplying the identified energy loads Determine the environmental benefits in terms of carbon dioxide savings compared with ‘business as usual’ Identify major barriers, issues and constraints (such as crossing major rivers, rail lines, roads; public realm works, etc.) and make recommendations. Spatially map the DE vision. Establish an incremental DE delivery plan based on consecutive construction phases, clearly identifying where the scheme should be ‘kick-started’, whether temporary Energy Centres should be considered and taking into account the energy loads development etc. Identify indicative costs and revenues