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Roadmap

Sameer Maither & Pierre Jaboyedoff

Seminar onEnergy Efficient & Thermally Comfortable Buildings in

AmravatiFor

CRDA, Andhra Pradesh2nd May 2017

Indo-Swiss Building Energy Efficiency ProjectProject Management and Technical Unit (PMTU) 1 of 21

2Indo-Swiss Building Energy Efficiency Project

Indo-Swiss Building Energy Efficiency

Project (BEEP)

BEEP Objective: To assist Govt of India in its programme to mainstream energy

efficient design of new buildings in India

▪ BEEP Phase I (2011-2016) ▪ BEEP Phase II (2016 -2021)

For more information, visit www.beepindia.org


Business As Usual

Good Passive Design based

on local climatic

condition(Reducing solar heat

gains, natural ventilation)

Energy Efficient systems (Cooling, lighting)

On-site Renewable Energy Generation

EPI

Reduced energy consumption

BEEP approach to energy efficient and

thermally comfortable building design


BEEP (2011-16) : Geographical Spread of Activities

Cold Climate

Hot-Dry Climate

Charrettes

Training/Seminar

Partner Insulation lab

Partner States

Warm-Humid Climate

Composite Climate


BEEP (2011-16): Results at a Glance

Design support to 18 large building projects

(Built-up area > 1.4 million m2)

Capacity building of >1000 building design

professionals –Training programmes& city-level seminars

Building Insulation Materials

(certified labs, training package )

External Movable Shading Systems

(Design competition & promotion)

Public building design support to 3 states

(Karnataka, Rajasthan & Andhra Pradesh)

National Design Guidelines for Energy-

Efficient Residential Buildings


Aranya Bhawan, Jaipur

44%

measured

energy

savings

Project Owner: Rajasthan State Forest Department

Charrette held: December 2012

Project in operation since March 2015


Smart GHAR III, Rajkot

Affordable housing project under the Pradhan Mantri

Awas Yojana (1176 units)

Project Developer: Rajkot Municipal Corporation

Charrette held: September 2016

Project under construction

4-6 oC

decrease in

peak room

temperatures

. Thermal

comfort

ensured in all

units


Why “Energy Efficient Thermally

Comfortable” (EETC) Buildings are Win-Win

for All?

BUILDERS

• Added value proposition in a crowded building

market, possibility of a premium.

• If integrated in the early design stage, no

additional cost.

• Compliance with Energy (ECBC) & Environment

codes, benefits like additional FAR

USER / OWNER

• Reduction of energy bills by up to 50%

• Significant improvement of thermal comfort

• Improved health & well-being

NATION / CRDA/

SOCIETY

• EETC buildings can help reduce the energy

consumption in buildings in CRDA by around 50%,

and huge savings due to avoided power

generation capacity

• With on-site renewable energy, net zero energy

buildings is a possibility


CRDA –Population Growth (2015 -2050)

0

5

10

15

20

25

2015 2030 2050

CRDA Growth in Population (million)

4 times increase in population (2015-2050)


CRDA – Growth in Built-up Area (2015 -2050)

0

200

400

600

800

1000

2015 2030 2050

CRDA Growth in built-up area (million m2)

Residential (million m2) Commercial (million m2)

Note: Preliminary estimates based on NITI Aayog per capita building built-up area assumptions used in IESS, 2047

13 times increase in built-up Area (2015-2050)


Annual Electricity Consumption in Buildings –Business As Usual (million kWh)

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

2015 2030 2050

Commercial elecricty (million kWh/yr)

Residential electricity (million kWh/yr)

40 times increase in Electricity consumption in buildings

(2015-2050)

Note: Preliminary estimates based on NITI Aayog per capita building built-up area assumptions used in IESS, 2047 and BEEP estimates on EPI. It is assumed that 100% buildings will have provision of air-conditioning by 2050.


Annual Electricity Consumption in Buildings -EETC Buildings Scenerio (million kWh/year)

Through EETC buildings, it is possible to reduce electricity

consumption in buildings by ~ 50% and avoid additional

thermal power generation capacity of ~ 7000 MW

0

5000

10000

15000

20000

25000

30000

35000

40000

45000

2015 2030 2050

Commercial elecricty (million kWh/yr)

Residential electricity (million kWh/yr)

Note: Preliminary estimates based on NITI Aayog per capita building built-up area assumptions used in IESS, 2047 and BEEP estimates on EPI. . It is assumed that 100% buildings will have provision of air-conditioning by 2050.

Roadmap for Energy Efficient and ThermallyComfortable in CRDA region

A first approach

Indo-Swiss Building Energy Efficiency ProjectProject Management and Technical Unit (PMTU) 1 of 21


Roadmap

GOALSFOR 2021

POTENTIAL ASSESSMENT & GOAL

SETTING

STATUS & BASELINE

2017

STRATEGIC ACTION PLAN


Roadmap

• Development control rules should include

simple provisions for energy efficiency and

thermal comfort

• Relevant examples:

– Switzerland (40 years of building code development

and enforcement)

– Singapore (experience of over … years of national

codes and green marks enforced in a tropical

climate)


The path towards implementation of the roadmap for adoption of EETC buildings design and construction

• Establish EPI and comfort benchmarks for

different types of buildings

• Development of simple provisions in the

building bye-laws and their compliance

checking

• Demonstration of EETC buildings in the region

• Capacity building for all stages of building

design, construction and operation


Example of Singapore as practical and enforcedrules for AC and non AC buildings

• AC buildings– Since 1979, the Building Control Regulations had prescribed an

envelope thermal performance standard known as OTTV. The OTTV standard applied only to air-conditioned non-residential buildings.

– A major review of the OTTV formula was carried out in the early 2000 to provide a more accurate measure of the thermal performance of building envelope.

– The new formula is named Envelope Thermal Transfer Value (ETTV) to differentiate from the original OTTV formula. The ETTV requirement does not apply to non air-conditioned buildings.

• Non AC buildings– The ETTV concept was extended in 2008 to cover residential

buildings.

– The envelope thermal performance standard for residential buildings is given the name Residential Envelope Transmittance Value (RETV) so as to differentiate it from ETTV


History of Swiss Building Codes, a practicalapproach

• In Switzerland, the building codes have been

developed over the last 40 years

• They became very stringent over time

– Building envelope

• Insulation

• Building tightness

• High performance HVAC

– The code about solar shading is most stringent in the

world


Roadmap

• Business as usual may lead to 7000 MW additional thermal power capacity (2050)

• Win-win strategy (applied by 2020) by mainstreaming Energy Efficient and Thermally Comfortable buildings– Establish EPI and comfort benchmarks for different

types of buildings

– Development of simple provisions in the building bye-laws and their compliance checking

– Demonstration of EETC buildings in the region

– Capacity building for all stages of building design, construction and operation

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THANK YOU !

To know more about BEEP, please visit www.beepindia.org

http://www.beepindia.org/

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