LONDON INFRASTRUCTURE PLAN 2050 BUILDING A BIGGER AND BETTER LONDON

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1 LONDON INFRASTRUCTURE PLAN 2050 BUILDING A BIGGER AND BETTER LONDON

2 GROWTH We estimate that London s population became bigger than ever in February We reached a population of 8.6 million people, the same as the last peak in 1939.

3 STRUCTURE

4 OVERALL INFRASTRUCTURE REQUIREMENTS By 2050, we estimate we will need the following across the city: This is our current view investment requirement and does not include innovation or potential technological changes that might change these requirements.

5 VARIOUS SPATIAL SCENARIOS CONSIDERED Assuming current policies continue Increasing densities in locations with good public transport access. Increasing densities in town centres. Accommodating some population growth outside London

6 INFRASTRUCTURE PROGRAMME FOR LONDON

7 GREEN INFRASTRUCTURE: KEY PROPOSITIONS Green infrastructure needs to be regarded as infrastructure in its own right, assisting with flood protection, water storage and recycling, and providing shade, new pedestrian and cycling routes as well as space for recreation and biodiversity. It should be regarded as vital to the capital s economy, affording benefits that cannot be provided by other infrastructure and services that can be delivered more efficiently and more sustainably. Establish a Green Infrastructure Task Force

8 THE TASK FORCE S TASKS To identify how the benefits of London s green infrastructure can be better described, understood and valued in order to make a more compelling case for investment. To identify changes to the way green infrastructure is designed and delivered so that it functions more efficiently and effectively given the city challenges. To identify potential new and more effective governance and funding models.

9 WHAT DO WE NEED TO DO? Focus more on the function of green infrastructure rather than its form. Encourage innovation in planning and design to enhance multifunctionality and deliver new green infrastructure in the context of denser development. Properly account for the value of green infrastructure. Relate the services provided by green infrastructure to outcomes and beneficiaries, and develop funding models accordingly.

10 RETHINKING PURPOSE Promoting Healthy Living improving health outcomes by increasing physical activity, reducing stress and removing pollutants. Strengthening Resilient Living keeping the city dry and cool. Encouraging Active Living increasing levels of walking and cycling. Creating Living Landscapes enhancing natural processes for the benefit of people and wildlife, and conserving the most special landscapes and places. Enhancing Living Space providing a range of outdoor space for cultural, civic and community activity.

11 TASK FORCE REPORT Report to be published in mid-november Further details at economy/vision-and-strategy/infrastructure-plan- 2050/progress/green-infrastructure-task-force

12 LONDON S FUTURE CLIMATE WARMER, WETTER WINTERS, HOTTER, DRIER SUMMERS + MORE EXTREME WEATHER

13 Maintaining a sustainable, affordable and secure supply of water, robust to future uncertainties. Maintaining a sustainable and acceptable standard of flood risk across all flood sources. Seeking to integrate water resource, water quality and flood risk management, as well as minimising energy use and maximising generation in the water sector. THE CHALLENGES

14 URBAN DRAINAGE: WHAT WORK IS UNDERWAY? Thames Water have modelled the capacity of their drains and sewers to cope with current and future challenges (climate change and popn growth). This modelling has been mapped to highlight areas where the capacity of the drainage/sewerage network would struggle to manage a 1 in 2 year rainfall event (see next slide). It also helps us understand how much rainwater we have to keep out of our drains and sewers if we wish to avoid regular flooding (identify the need ) In parallel, the GLA, the EA and TW have commissioned consultants to map where and how much SuDS could be retrofitted in London this will help us understand how much water can be managed through SuDS (identify the opportunity ) see slide after next If the need is much greater than the opportunity, then we will need to look at other opportunities e.g. sewer capacity optimisation, and so develop adaptation pathways.

15 DRAINAGE CAPACITY Source: Thames Water 15

16 SUDS OPPORTUNITY MAPPING Disconnect Roof Downpipes GIS Criteria: Buildings >= 400m 2 Within 8m of open surfaces covering at least half the building s roof area Additional criteria: -Infiltration feasible (for soakaways) -Size of open spaces depending on type of SuDS - Soakaway, Raingarden, Pond, Waterbutts with attenuation Orange Large building not close enough to permeable ground to convey roof runoff to a detention pond. Red - Large building close enough to permeable ground to convey roof runoff to a detention pond. Green Open spaces 16

17 THE LONDON PLAN New Mayor will want new London Plan reflecting his priorities: the GLA Planning Team will prepare this through a consultation and expect to publish the new Plan in 2019/20. They will consider a wide range of spatial scenarios on how to accommodate London's growth in the longer term. They will consider improved co-operation with stakeholders in the wider South East. They recognize that climate change adaptation in particular water supply and flood risk are issues that requires strategic cooperation. They are exploring sharing data in order to establish a consistent baseline data for the wider SE - as the basis for future cooperation. They have started to see which London Plan policies need to be reviewed and how: the 2050 Infrastructure Plan will help them, especially about water supply and flood risk issues Beyond that they will also update the Regional Flood Risk Appraisal next year and liaise with EA re TE 2100 implementation.

18 TO FIND OUT MORE Infrastructure Delivery Board: Madalina Ursu Flood resilience and drainage issues: Alex Nickson Green infrastructure: Peter Massini Planning: Jorn Peters may pop in at 11:45