Delivering the future, today

Renate.powell@carbontrust.co.uk

Specifying and designing public sector low carbon buildings – the productivity design approach

Scottish GovernmentEnergy Efficiency Action Plan

“We will provide clear energy efficiency guidance and leadership to the public sector to enable the delivery of energy saving improvements and promote exemplary behaviour.”“We will work with the Carbon Trust to produce guidance… on the procurement of energy efficient, low carbon buildings in the public sector.”

October 2010

The sector matters…18% of UK’s carbon emissions are from non-domestic buildings

Many of the measures for carbon reduction in our buildings exist today and could be implemented quickly

… and has potential to deliver significant carbon savings economicallyUK-wide 35% carbon reductions by 2020 (vs. 2005) could deliver net benefit to UK of £4-5bn –

Reducing more carbon, sooner, will lead to a reduction in cumulative cost of achieving 80% reduction by 2050

Reductions of 70-75% could be possible at no net cost to UK

Delivering the future, todaySuite of Documents

Executive summarySetting the sceneProject Manager’s GuideProject Owner’s Guide

Tools– Client value preparation – Skills, knowledge and experience – Low carbon tracker

www.carbontrust.com/resources/reports/advice/delivering-the-future-today

OPERATIONAL ENERGY TARGET

SETTING THE SCENE

Temperature

Thermal comfort wintertimeThermal comfort summertime

DaylightCalifornian study on 20,000 pupils.

It found that in schools, students with the most day-lighting in their classrooms progressed 20% faster on maths tests and 26% faster on reading tests in one year than those with the least.

How to make it low carbonPassive first

1

Efficient Services – not overspecification

2

Ensure services are off when not needed

3

Heat Recovery

4

Renewables

5

So, just specify x% better than building regulations to get better performance?

The specification gap

Regulated

Overall design carbon emissions

U-value and air tightness levels

Ventilation levels

Elemental carbon emissions

Minimum equipment efficiencies

Controls for individual items

Asset related emissions Operational emissions

Time and Cost

More time for design – Innovation, Best ValueCapital Cost

Capital Costs

Angus Council – 50% energy savings compared to previous school at no capital cost premiumWhitecross in Hereford, 50% energy savings 0.7% capital increaseInverclyde Council – 4% capital increase with 30% reduction in energy

Whole life costing

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 20100%

50%

100%

150%

200%

250%

300%

350%

Electricity Gas HFO

PROJECT MANAGER’S GUIDE

Client value preparation tool

Organisational ManagementClient Values at Project InceptionProcess and FinanceInvestment and Whole-life CostsContractual Arrangements

Site selection

Orientation optionsUrban horizon angleAccess to enable delivery of biofuelsPlanning restrictionsAvailable spacePrevailing weather directionZoning of adjacent areas

Skills, knowledge and experience tool

Site selection Sustai

nabilityOperatin

g energy

DesignProdu

ctivity

Investment

Operational

Cost

Construction

Design team selectionDesign team contracted to design a low carbon building

Full dynamic thermal and visual modelling to optimise passive façade and orientation

Operational modelling during design process

Adherence to commissioning metering and monitoring requirements

Architect and Services engineer toallow time to work together

Design team fees to incentivise integrated design and passive demand reduction

HOW THE CARBON TRUST CAN HELP YOU

Further assistance

Support the Client in specificationBe a handholder for the Client through the whole procurement processAct as Technical Advisor on project design teamBe a verifier of key milestones reporting direct to Project SponsorProvide extensive training for different members of the design team