The journey to net zero carbon Building new

The journey to net zero carbon Building new homes Raven carbon zero webinar series

Welcome and introductions: Ali Bennett, Director of Development, Raven Amy Simmons, Head of Policy, NHF John Bedford, Technical Director, whg Raven carbon zero webinar series 2

Overview • Introduction, sector priorities • Energy efficiency for new homes • Commitment to high quality sustainable new homes • Government asks

Sector priorities Social housing as a part of economic recovery Not losing sight of housing crisis and climate crisis Recognition of the role of housing association staff during this crisis New understanding of customer base and vulnerabilities Embracing new ways of working

Energy efficiency for new homes • Policy Driver - “We will not meet our (national) targets for emissions reduction without near complete decarbonisation of the housing stock. ” • Residential housing is responsible for 22% of all UK emissions (if emissions from consumed electricity are included), and social housing contributes 10% of this NHF view • An agreement that proposals for uplifting Part L standards and a Future Homes Standard do not currently go far enough to meet the reduction in emissions required to achieve net zero emissions in 2050. • Support for a fabric-first approach to the development of new Part L and Future Homes standards to minimise future longer-term maintenance and service charge costs, and the need to retrofit relatively new homes. • Advocacy for the levelling up of existing local standards to help build sector capacity, skills, expertise and supply chains. • https: //www. housing. org. uk/our-work/climate-and-sustainability/ • Working in partnership with others i. e. HBF future homes taskforce

New quality, sustainable homes NHF focus • Green recovery #Homesattheheart a once-in-a-generation investment in social housing • Leading conversations, sector advocacy • Building partnerships and supply chains, training, up-skilling and re-training our sector at scale and pace • Linking policy expertise – Energy efficiency, sustainability, MMC and building safety • Understanding consumer behaviour and demand – National Grid and Zero carbon hub • Planning ahead – business plans, reporting, governance, assurance – business transformation • Map and share best practice

Government asks Clarity • Roadmap for delivery • Policy certainty around appropriate interim targets and standards • Clear expectations and supporting guidance Strategy • • • Finance and investment to deliver Flexible and agile approach to funding and investment Timing of interim standards including retrofit considerations Coordination of test and research evidence and data Learn from other work programmes (building safety, MMC etc. ) Joined up government

Keep in touch Amy. Simmons@housing. org. uk Visit our website for information on webinars and events including our #NHFVirtual conference programme

Summary of topics • Contribution design, materials and new technology can make to building good-quality, sustainable, new homes • Experience of previous projects that can be replicated at scale for affordable housing • Opportunity scale offers to deliver new technologies, how well received they may be/have been by customers, any live data to support improvements in running costs • Previous experience of building greener homes, successes, challenges, pitfalls Dedicated to the success of our people and places Page 9

A bit about me…………… • A background in architecture (35 years). • One of the first eco-homes assessors in 1999. • Built one of the first eco terraces in 2000 which experimented with technology and early MMC. • One of five advisers to the Prison service in 2001 for the development of MMC secure accommodation. • In 2003 and Based upon research into Scandinavian living, introduced the fabric first closed timber panel system to the domestic affordable market. • Imported the fist homes in 2005 and continued to import until 2009 • Developed, designed and built the first affordable homes MMC factory in 2010 to build UK based timber frame closed panels for affordable homes. Dedicated to the success of our people and places Page 10

Design • Design for aspect and orientation if possible. (the UK‘s peak PV angle relative to the equator is 34 Degrees) so consider off set pitches. • Adopt the fabric first principles. Aim for 0. 17 u-value or better. • Understand ventilation. Seal tight, ventilate right. Aim for air tightness of around 4. • Understand thermal mass, solar gain, heating response times and lifestyle. • Consider primary energy as a target consumption limit. • The Future Homes standard and beyond 2025. • Think Df. MA now in readiness for the MMC evolution. • Decarbonisation of the grid and the 2022 energy tax changes. Cheap electricity or expensive gas? • Design to the pyramids of need. Dedicated to the success of our people and places Page 11

The pyramids of need – Kyoto principles of design hierarchy Dedicated to the success of our people and places Page 12

Materials • Remember the green guide? • Understand the effects of the performance of materials. (density versus insulation/thermal mass). • Consider embedded carbon (timber is carbon neutral). • Consider lifecycle carbon (transport and manufacture, and not just the product in use) • What about the circular economy of materials? (component recycle and the leasing of elements) • PCM (Phase Change Materials). • Climatic effect (render spores). Dedicated to the success of our people and places Page 13

Technology Fabric performance allows renewable performance. The main renewables: - • • • Wind Solar Geothermal Biomass Hydro Anabolic. But keep it simple! Remember the off and onable rule from Creature Comforts? Dedicated to the success of our people and places Page 14

One step further……. Low heat load and power consumption supported by the inherent fabric first approach means we can be confident in the performance of: - • • • All electric systems with radiant carbon panel systems. 12/24 volt circuits for general use (excluding cooking). Kinetic Bluetooth switches eliminating wiring. Solar collection for DHW or PV with diverter. MVHRS. Photovoltaic (PV) self generation 3 kw peak and battery back-up. Saline battery technology now a reality. Smart sockets managing peak demand. Full monitoring with ethernet hub controlled intelligent wiring (ele model). Dedicated to the success of our people and places Page 15

The future is………peak demand management The low energy breakfast! • Split the day into three, generate the energy (PV etc), store the energy (batteries), use the energy in a managed way (low energy systems). • Remember peak demand management. The 1. 8 kw rule of limitation. This is the average electricity limit of the average PV array. • The low energy breakfast! - Tea, toast and beans (1. 8 kw kettle, 1. 2 kw toaster, 0. 8 kw microwave) used together 3. 8 kw. Costs you 2 kw. • But, Tea, then toast then beans is only 1. 8 Kw! Dedicated to the success of our people and places Page 16

Experience of previous projects • Ever been a caravan tourer? (Duel systems and 45 litres of water a day!). • Always have the best fabric. Space heating is not the problem now, it’s hot water demand! • Saline technology is on its way. • Get the ventilation system right, hey Mr Bishop? • The main focus has always been on a fully electric system. • Offset the grid with PV. Diverter or Battery storage or both? Practice peak demand management. Be more like Emma. • We have a model with Heat and Power at a zero cost (well, £ 6. 79 per year actually) Dedicated to the success of our people and places Page 17

Opportunities and Scale • We are constantly asked to view the construction industry through manufacturers eyes. • Technology gets cheaper. • The electric car is here. • Communal charging points. • Energy Services Companies (ESCO). • MMC offers the best opportunity for quality and performance. • The solar PV/Battery scenario will become very affordable. • Communal battery plants and shared peak generation. Dedicated to the success of our people and places Page 18

Successes, challenges, pitfalls. Some anecdotes…. • Never mix and match, abide by the pyramid of hierarchy. • Heat pumps and the impact of baseline specifications. • We know our climate. o o • • • We invented the bungalow. We love the patio! Smart homes, smart occupants? Its cold in here because the radiator is not hot. Lightweight does not equal overheating! Use insulation as a barrier hey Mr Trombe? Heat the air not the house and the occupants not the furniture. Dedicated to the success of our people and places Page 19

Who are Raven? The journey to net zero – building new homes 20

The journey to net zero – building new homes 21

The journey to net zero – building new homes 22

Progress so far • Standardised approach with cascade; • Fabric first –MMC; • Consider resident experience; • Support retrofit programme; • Cost…. The journey to net zero – building new homes 23

Building Better The journey to net zero – building new homes 24

Questions? Raven carbon zero webinar series 25