Zero Carbon HUB

1. Zero Carbon HUB Rob Pannell Head of Housebuilding

2. ROLE OF THE ZERO CARBON HUB • PURPOSE AND STRATEGIC OBJECTIVES • Facilitate the mainstream delivery of low and zero carbon homes • Provide leadership and create confidence • Reduce risk and clear obstacles • Disseminate information

4. OUR CURRENT POSITION New Domestic New Non -Domestic Existing Domestic Existing Non - Domestic

5. Building Energy Examples Consumer Skills FIVE WORKSTREAMS

6. PROCESS

8. EXAMPLES

10. JOURNEY TO ZERO CARBON HOMES 3 4 6

11. JOURNEY TO ZERO CARBON HOMES 4.5 70%

12. Energy Efficiency • The latest developments

13. Defining the Fabric Energy Efficiency Standard for zero carbon homes 13

14. Scene Setting - Policy Allowable Solutions Zero Carbon On-site LZC tech. or connected heat 70% Carbon Compliance Energy Efficiency TG Scope Zero Carbon Hierarchy 14

15. Scope of ‘Energy Efficiency’ • Building fabric U-values • Thermal bridging • Air permeability • Thermal mass • Solar, metabolic, lighting & appliance gains Energy Efficiency Standard LZC technology • Heating / cooling appliances (boilers, etc) • Mechanical ventilation • Hot water • Active controls • Fixed lighting • All LZC technologies Carbon Compliance Standard heat power 15

16. RECOMMENDATION:Metric for Energy Efficiency • kWh/m²/yr space heating & space cooling demand • Performance standard With design guidance • Design Flexibility • Takes into account building form • Promotes innovation • Known level of performance • Known ‘currency’ internationally

17. Specifications Modelled Modified AECB Silver Standard EST BPEE Standard = between Spec A & Spec B Spec C but double glazed & air leakage = 3 Current practice EST APEE Standard PassivHaus equivalent U-values (W/m²K)

18. Will have to work harder Similar build specs RECOMMENDATION: LevelSpace Heating & Space Cooling Demand, kWh/m²/yr

19. What this meansEnergy demand reduction 19

20. What this meansRelationship with 70% Carbon Compliance

21. Decision Criteria:Task Group Assessment

22. Capital CostEnergy Efficiency Measures

23. Whole Life Cost: Carbon ComplianceSemi-detached House • Basis: • 70% carbon compliance • Over 60 years • Assumptions: • Net present ‘extra over’ costs • Energy inflation = RPI + 2.5%, • Discount rate = 5% • Full costs exclusive of land take 23

24. Whole Life Cost: Carbon ComplianceSemi-detached House 24

25. Whole Life Cost: Carbon ComplianceSemi-detached House 25

26. Whole Life Cost: Carbon ComplianceSemi-detached House 26

27. Whole Life Cost: Carbon ComplianceSemi-detached House 27

28. Supplementary Work Required

29. Recommendations Summary • Metric • kWh/m²/yr • Space heating + Space cooling demand • Level • Implementation • 2016 with interim step in 2013 • Strong section in CfSH consultation • Strongly worded ministerial statement • Timeline implications

30. Allowable Solutions • The latest developments

31. July 2009 Ministerial Statement • Allowable solutions that received broad support: • Further carbon reductions on site... • Energy efficient appliances... • Advanced forms of building control system... • Exports of low carbon or renewable heat... • Investments in LZC community heat infrastructure. • Others remain under consideration: • Retrofit • Offsite renewable electricity

32. Thankyou for Listening 32