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PUBLIC BUILDINGS: Is painless retrofitting possible to improve energy efficiency and sustainability in heritage and listed buildings? Jonathan Riley,

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Presentation on theme: "PUBLIC BUILDINGS: Is painless retrofitting possible to improve energy efficiency and sustainability in heritage and listed buildings? Jonathan Riley,"— Presentation transcript:

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2 PUBLIC BUILDINGS: Is painless retrofitting possible to improve energy efficiency and sustainability in heritage and listed buildings? Jonathan Riley, partner, Pinsent Masons (chair) Giles Proctor, historic buildings architect for North Yorkshire and heritage at risk adviser, English Heritage Andy Shepperd, senior consultant, Arup Dimitri Hadjidakis, director, Turner & Townsend Project Management Harry Wardill, project advisor, Prince’s Regeneration Trust

3 BASE LEEDS CITY REGION ENERGY EFFICIENCY AND PUBLIC BUILDINGS Pt 2 of 2 Giles Proctor

4 first EH guidance on energy efficiency published 2002 (revised 2004, with new guidance in 2011) “The guidance given by English Heritage should be taken into account in determining appropriate energy performance standards for building work in historic buildings”

5 developing a methodology

6 Understanding the building

7 understanding significance understanding the point at which character and significance would be unacceptably compromised by compliance with the energy efficiency requirements

8 understanding environmental performance how traditional buildings actually perform rather relying on theoretical models trade-offs between risks and benefits

9 understanding environmental performance The larger scale- the performance of the building as a whole- heating ventilation, insulation energy efficiency The medium scale- how conditions vary from place to place around the building The smaller scale- can be difficult sometimes to make satisfactory junctions between various elements and construction details with different types and levels of insulation

10 establishing existing performance air pressurisation testing infra-red thermography

11 establishing existing performance U value testing monitoring consumption

12 Upgrading to meet requirements

13 upgrading to meet requirements Establish priorities: Degree of impact on the historic fabric Amount of benefit and payback period Ease of installation Technical risks PHASED APPROACH/incorporation into programmes of repair

14 maintenance and repairs optimising performance

15 benign enhancement

16 control air infiltration

17 low risk upgrading

18 higher risk upgrading

19 carbon neutral energy supply

20 Upgrading building elements guidance notes

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22 ‘Hearth + Home’ research projects

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25 Andy Sheppard 11 th September 2012 Low Carbon Heritage Refurb

26 26 The project & team  Carbon reductions in Listed Buildings  Generic guidance document  Five case studies

27 27 Generic Guidance - Overview  The intended audience:  Planning and conservation officers  Architects  Building owners

28 28 Generic Guidance – Investigate  Bill analysis – basic but essential  Benchmarking can be challenging  Sub-metering very useful  Range of supplementary tests possible  Thermal imaging  Air pressurisation  In-situ U-value  Thermal modelling

29 29 Generic Guidance – Intervention  Think about the building as a whole  Energy hierarchy  Apply with pragmatism  Behaviour – has to be the first change  Fabric – possible with care  Services – more freedom  Low carbon – perfectly feasible

30 30 Case Studies  Heritage value & Statement of Significance  Building condition survey  Fabric & Systems  Bill analysis & benchmarking  Interventions listing  Options Appraisal  Recommendations

31 31 Mercer Gallery  Heritage importance within  Windows, doors and interiors  Controls, monitoring and behaviour  Larger scale interventions  Hot water system  Roof insulation (+ wall?)  LED lighting  Photovoltaics? 20%40%60%80%100% ! Elec Gas <5<10<25

32 32 St. Peters Street  Heritage importance within  Some windows, panelled reveals, roof spaces  Unsure future use – calculations difficult  Larger scale interventions  Loft insulation (with care)  Lighting controls  Draught stripping  Internal wall insulation feasible (esp. if hostel)  High performance secondary glazing 20%40%60%80%100% Elec Gas

33 33 Armley Mills  Heritage importance within  Pretty much everything!  Monitoring, controls  Larger scale interventions  Boiler system modernisation  Digital plant controls  Partial roof insulation  Daylight linking in lights 20%40%60%80%100% Elec Gas

34 34 Almondbury Dwelling  Heritage importance within  Exterior walls and roof, some interior  Recently upgraded  Larger scale interventions  Tailor to occupant  Draught-stripping  Low energy lighting  Loft insulation  Wall, floor insulation feasible 20%40%60%80%100% Elec Gas

35 35 Lord Deramore’s School  Heritage importance within  Exterior walls and roof, some interior  Emissions 86% heating  Larger scale interventions  Roof and wall insulation were poss.  Upgrade boiler system & controls  Secondary glazing  Photovoltaics 20%40%60%80%100% Elec Gas

36 36 Summary  Heritage Assets are significant and worth saving  More difficult than ‘normal’ existing buildings  But...  The process is no more difficult than usual  Start with the basics – they sometimes yield surprising results  With care, larger interventions can be identified  Significant savings are possible

37 37 Thanks

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40 The Mayor’s Commitment London Mayor’s Climate Change Target Today Reduction in greenhouse gas emissions by 60% below 1990 levels by 2025 UK Climate Change Act (2008) Reduction in greenhouse gas emissions by 80% below 1990 levels by European Target Reduction in greenhouse gas emissions by 20% below 1990 levels by % increase in renewables 20% cut in energy consumption The Mayor’s Commitment

41 An Energy Service Company (ESCO) carries out the works and guarantees the resulting energy savings This guarantees the payback of the investment with the delivery risk transferred to the ESCO. Insulation Building management technologies Cooling equipment Low carbon heating Energy Performance Contracting approach: The public sector building owner identifies a portfolio of buildings to retrofit, sets a target percentage energy savings and a payback period The RE:FIT Building Energy Efficiency Programme RE:FIT allows public bodies to make substantial cost savings, reduce energy bills and the carbon footprint of their buildings

42 Balfour Beatty COFELY (GDF SUEZ) MITIE EDF Energy E.ON Sustainable Energy Business Parkeray/ Hoare Lea Honeywell Hurleypalmerflatt Interserve Johnson Controls Schneider Electric Willmott Dixon Framework of Approved Suppliers New framework of suppliers in place for January 2013 Strong drive to increase national participation

43 Solar thermal Photovoltaic panels Cavity wall insulation Solid wall insulation Secondary glazing 1E Nightwatchman software for PC auto shutdown Energy Conservation Measures District Heating CHP VSDs on pumps and fans PC control Voltage optimisation Lighting & controls BMS controls Heat recovery Loft insulation Insulation to pipework Draught proofing Radiator reflector panels

44 RE:FIT Successes Hospitals Universities Cultural Centres Office buildings Retrofits completed/near completion on 111 buildings including: Schools Fire stations Police buildings Memoranda of Understanding signed by 54 London organisations including: 21 of the 33 London Boroughs 16 NHS organisations 17 other organisations including Central Government, Museums & Education £2.1m energy bill savings pa £13.3m investment

45 Target 600 buildings Savings of up to £12m in energy bills per annum Pipeline of 325 buildings Savings of over £7m p.a. in energy bills £35m investment Target 40% of public sector organisations Savings of up to £80m in energy bills RE:FIT Pipeline

46 The GLA secured funding from the European Commission under the European Local ENergy Assistance Programme ELENA funds the Programme Delivery Unit (PDU) to further drive take up of the RE:FIT programme over 3 years 90% of the £2,671,000 funding is provided by ELENA and 10% by the GLA ELENA Funding The PDU has to leverage its cost 25 times in investment

47 The Programme Delivery Unit Team Dimitri Hadjidakis Programme Director Robert McKinnon Marketing & Engagement Jon Spring Financial & Commercial Tristan Oliver Technical Lead David Mathieson Procurement Chloe DeBanks-Hirst Simon Hart Programme Office Merv Chapman Phil Toombs Chloe DeBanks -Hirst David Muggeridge Elliot Smith + David Rees Rob Edwards David Crewe Paul Maitland John McGowan David Walker + Rommy Perea Chris Spicer Virginie Caujolle-Pradenc GLA Programme Manager

48 The role of the Programme Delivery Unit Provided by Turner & Townsend with support by PA Consulting Manages the RE:FIT framework Facilitates the uptake by (London-based) Public Sector organisations Supports clients through all programme stages Uses experience and lessons learnt to develop best practice templates and standards The GLA has committed to save approximately 100,000 tonnes of CO 2 over 3 years through the PDU

49 Significant Mayoral support Savings are guaranteed Barriers of alternative procurement routes removed A tested, readily accessible and constantly updated and improved approach Funded experienced PDU “Difficult” buildings not an issue RE:FIT Summary

50 50 Dimitri Hadjidakis Turner & Townsend Virginie Caujolle-Pradenc Greater London Authority Or contact

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52 Sustainable Heritage-Led Regeneration Harry Wardill

53 Middleport Pottery In June 2011, The Prince’s Regeneration Trust acquired the Middleport Pottery site to save it from closure and to embark on an ambitious and sustainable conservation and regeneration project. The project will save a nationally important piece of heritage while supporting and working with the people of Burslem and beyond. The 84,000 sq ft site will be developed into a community and enterprise hub that supports the local community and economy. Denby Holdings Ltd own the pottery business itself (Burgess and Leigh) and they will be the chief tenants at the Middleport Pottery site …the last working Victorian pottery in the UK

54 Critical Success Factors Conservation - Preserve the unique character of the listed buildings - Care for the collection of moulds, artefacts and archives ‘Mending the Factory’ - Deliver optimal working area for the Burleigh Pottery New Facilities - Establish sustainable visitor facilities (inc. shop/café) - Create space for craft based businesses Regeneration - Maximise regeneration impact (jobs, growth, participation) - Sustain high levels of community support Environment - Bring an underused resource back into full use and improve its environmental performance where possible

55 Conservation Philosophy

56 Environmental Building at risk repaired and embodied carbon ‘reused’ Retention of robust, long-lasting and flexible building fabric and layout Solid wall construction with good thermal mass Double aspect rooms with natural cross ventilation Good natural light levels with large existing windows and roof lights Light touch repairs – works only where necessary Thermal upgrades undertaken where practical e.g. roofs Installation of efficient gas powered central heating system Local sub-contractors used for the works where possible Traditional materials used where possible Green Travel Plan developed for future building users

57 Wider Burslem Port Street houses developed by the Council Harper Street Houses used as an exemplar for ‘homesteading’ Wedgewood Institute Wider Townscape Heritage Initiative Focus on the canal infrastructure Investment in other growing local pottery businesses Part of the wider place making work of the Prince’s Charities

58 Stoke-on-Trent is the 16 th most deprived local authority in the UK (10 th for jobs; 7 th for education) Fifty local jobs at the Middleport Pottery have been saved Production of Burleigh ware has and will continue to grow – more jobs will be created as the business flourishes New workshop units for creative industries will be created for new and expanding business in Burslem and the wider area. This will create further jobs. Visitor numbers will be increased from 8,000 per annum to 30,000. This will bolster the local economy and create further jobs Regeneration

59 Completed Heritage-Led Regeneration Projects Harvey’s Foundry, Hayle At one time 80% of the world's steam pumping engines were produced in Hayle. When the area suffered wide industrial decline, the Foundry was left redundant. The site has been developed to create rentable office space, craft workshops, art studios and live work units Phase III will create more work space and a heritage information centre

60 Harvey’s Foundry Successes (phases I and II) Restoration of the Grade II* listed Drawing Office and Grade II listed Foundry Farm buildings Construction of 8000sq ft of new enabling development at Dowren House, accommodating 51 new jobs and providing income for Hayle Town Trust. In total 78,931 sq ft of historic building space has been regenerated. With 112 people employed on site, over £3 million was raised for the exchequer through income tax and NI, between 2003 and in less than 9 years Harvey’s will have generated more than it cost. PRT estimates that 860 metric tonnes of CO 2 was saved through the reuse of these buildings, rather than building new

61 Completed Heritage-Led Regeneration Projects Sowerby Bridge Wharf, West Yorkshire Collection of 18th and 19th century canal buildings that sit at the head of the Calder and Hebble Navigation and adjoining Rochdale Canal. Main buildings on site are four stone-built, C18 th warehouses, one Grade II*, the rest Grade II. There are also ancillary buildings from the C18th Renovated to create mixed-use space that incorporates offices, workshops, a canal boat wet-dock and a restaurant.

62 Sowerby Bridge’s Successes £2.7 million of public investment by 2007, in addition to an undisclosed sum by British Waterways. £1.16 million of private investment, much of it from local businesses. 34,200 sq ft of vacant heritage building floorspace brought back into use 270 employees on site, 17 business units, 7 start-ups £1,631,934 a year in additional NI and income tax (2007 – 10) By January 2010, and despite the recession, unemployment in Sowerby Bridge had dropped from 10% to 5.6%. The local authority estimates it has seen a further £28m investment in the local area since the restoration, creating a further 350 jobs PRT estimates that 373 metric tonnes of CO 2 was saved through the reuse of these buildings, rather than building new

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