sa ac regional 1 © stroma certification ltd v1.3 commercial energy assessment introduction...

SA AC REGIONAL 1 © STROMA CERTIFICATION LTD v1.3

Commercial Energy Assessment

Introduction

PRESENTED BY


Contents

The session will consist of the following:-

• Introduction.• STROMA – A brief history. • Acronyms.• CLG – Communities and Local Government.• EPBD – Energy Performance of Buildings Directive. (Why,

what, when, who.)• Energy Performance Certificates.• Part L Compliance. (New Build)


STROMA

STROMA :-Not only,

“The fibrous connective tissue forming the matrix of the mammalian ovary and testis”

(The New Collins Concise English Dictionary)


STROMA

STROMA :-But Also,

STEVEROBMATT


STROMA

First there was :-

STROMA Technology Ltd (founded 2002)

“A testing and consultancy company within the building industry”.


STROMA

Then there was :-

STROMA Accreditation Ltd (founded 2007)

“Providing Training and Accreditation”.

• Code for Sustainable Homes• Air Testing/Permeability

• Domestic and Commercial Energy Performance Certificates• Display Energy Certification


STROMA

Which has become :-

STROMA “Certification”

(A UKAS requirement)


STROMA

Building Sustainability & Compliance

Energy Assessment and AdviceTraining and Accreditation

Sustainable DesignCompliance Testing & Consultancy

Carbon Reduction Commitment ConsultancyContracting Services

Renewable Product Sales

Stroma Pioneer Way Castleford WF10 5QUwww.stroma.com T: 0845 621 11 11 F: 0845 621 11 12


Acronyms

CLG Dept of Communities & Local Government

Government department responsible for (among other things)building regs, planning policy, and implementation of EPBD

EPBD The Energy Performance in Buildings Directive

EU Directive, adopted by UK and other Member States, that requires energy rating of buildings to help reduce CO2 emissions through consumer demand for greater energy efficiency.

EPC Energy Performance Certificate

The output from an Energy Assessment that shows that calculated energy and CO2 emissions performance of a building, rated from A (best) to G (worst). Similar to format used for electric appliances in appearance.

DEC Display Energy Certificate Similar in appearance to the EPC, the DEC is an A3-sized certificate that shows the ACTUAL energy consumption of the building. Required every year in large public buildings.

SBEM Simplified Building Energy Model

A freely available calculation tool that uses the National Calculation Methodology to calculate CO2 emissions, relative to the required target. Used for Part L2 compliance calcs for non-dwellings

OR Calc Operational Rating Calculator

A freely available calculation tool that measures the amount of energy consumed during the occupation of a building over time.


CLG

Communities and Local Government (CLG)

“We would all like to be part of a safe, prosperous and healthy community. A community where everyone has the right to the same opportunities, freedom and respect. Somewhere we can be proud of.”

Communities and Local Government is working hard to create thriving, sustainable, vibrant communities that improve everyone’s quality of life. To achieve this we are:

• Building more and better homes – and reducing homelessness.• Improving local public services.• Regenerating areas to create more jobs.• Working to produce a sustainable environment.• Tackling anti-social behavior and extremism.


CLG

Communities and Local Government (CLG) continued.

Communities and Local Government sets policy on local government, housing, urban regeneration, planning and fire and rescue. We have responsibility for all race equality, equality and community cohesion related issues in England and for building regulations, fire safety and some housing issues in England and Wales.

www.communities.gov.uk


EPBD

Energy Performance of Buildings Directive. (2002)

Reducing energy consumption and eliminating wastage are among the main goals of the European Union (EU). EU support for improving energy efficiency will prove decisive for competitiveness, security of supply and for meeting the commitments on climate change made under the Kyoto protocol.

There is significant potential for reducing consumption. With 40% of our energy consumed in buildings, the EU has introduced legislation to ensure that less energy is consumed.

A key part of this legislation is the Energy Performance of Buildings Directive (EPBD) which requires all EU countries to enhance their building regulations and to introduce energy certification schemes for buildings. All countries are also required to have inspections of boilers and air-conditioners.


EPBD

The introduction of national laws meeting EU requirements is challenging, as the legislation has many advanced aspects. It is a great opportunity to mobilise energy efficiency in EU buildings, but is also a formidable and continuing challenge for many EU countries.

To support EU countries in this task, the Concerted Action (CA) EPBD was launched by the European Commission to promote dialogue and exchange of best practice between them.

This forum now includes representatives from 29 countries and focuses on finding common approaches to the most effective implementation of this legislation.

When initiated in 2005, most countries were still at the planning stage, but are now well advanced, and the approach was enhanced in 2007.

The CA is funded under Intelligent Energy-Europe under the European Union’s Competitiveness and Innovation Programme.


EPBD

EPBD – Why?

Climate Change

CO2 levels are higher than ever.

Climate change is “unequivocally” accepted.

CO2 levels are due to human activity.

10-15 yrs only to enact measures to reduce emissions.


EPBD

EPBD – What?

Energy Labels

First we had washing machines and white goods.

Then we had cars.

Now we have buildings.

Introduced through EU Directive 2002.


EPBD

EPBD Article 7

Domestic EnergyPerformanceCertificates

Non Domestic EnergyPerformanceCertificates

Display EnergyCertificates


EPBD

Timeline

• By October 2008 all buildings whenever sold, built or rented will need an Energy Performance Certificate (EPC).

• 1 October 2008 Display Energy Certificates required for public buildings > 1,000 m2

• 4 January 2009 Inspection of all existing air-conditioning systems over 250 kW must have occurred by this date.

• 4 January 2011 First inspection of all remaining air-conditioning systems over 12 kW must have occurred by this date.


EPBD

EPBD – Who?

- Energy Assessors

Only accredited Energy Assessors are able to carry out assessments and produce EPCs and DECs.


Non Domestic EPC

Commercial EPC – How?1. Pre-visit questionnaire.

2. Risk Assessment.

3. Full building Survey.

4. Data Collection.

5. Additional Research.

6. Data Input.

7. Recommendations.

8. Additional Recommendations.

9. Certificate.


Domestic EPC

EPC for Domestic Building


Non Domestic EPC

EPC for Non-Domestic Building


Non Domestic EPC

Non Domestic Energy Performance Certificates

– Asset Ratings– Numerical indication of the amount of energy

needed to meet the standardised use of the building

– Calculated using SBEM– Normalised for occupancy and weather– Recognises varied ‘activity’ within the building– Applies to both new and existing buildings


Non Domestic EPC

Non Domestic Energy Performance Certificate

SBEM

Actual Building Details

‘Notional’ Building Details

Asset Ratings

CO2/m2/aCO2/m2/a


Non Domestic EPC

Non Domestic Energy Performance Certificate

The Notional Building

This is defined in the Advisory Documents. In essence, it is a building of the same size, shape and use as the actual building, but with U-values etc that are compliant with current building regulations.


Non Domestic EPC

Energy Performance Certificate– Must contain:-

• ‘A-G’ Rating• Demonstrate Compliance• Benchmark Building (type)• Recommendations Report• Be valid for up to 10 years

– No obligation to :-» Implement» Display


Non Domestic EPC

Levels of EPC Assessors

• Level 3 – Simple existing buildings using SBEM.

• Level 4 – All buildings (new and existing) using SBEM methodology.

• Level 5 – Highly qualified consultants able to survey complex buildings using dynamic simulation models.


Non Domestic EPC

Exempted from EPCs

• Places of Worship• Temporary buildings in use for less than 2 years. (e.g.

Site Offices)• Low energy demand buildings. (e.g. Barns)• Stand-alone buildings less than 50m2 (Sheds, Summer

Houses).


Part L2A – New Non-Domestic Buildings

PART L COMPLIANCE(New build)

• For compliance with Part L2A the BER < TER


Part L2A – New Non-Domestic Buildings

• What influences compliance with Part L2?

– As with domestic EPC, commercial EPC compliance is influenced by ‘U’-Values, Plant Efficiency and Air Leakage.

– A higher Improvement Factor is applied if the building is mechanically ventilated or air conditioned. This reduces the Target Emission Rate, making Compliance more challenging.

– Effective lighting control, energy metering and heat recovery ventilation all influence compliance.

– Limiting of Solar Gains is required in addition to Emission Rate calculation.

– Looking at improved solar properties of glazing and potential shading devices may be required to achieve compliance with this criteria.

– Emission Rate Calculation links into rating for EPC’s by providing Asset Rating.


Q & A

sa ac regional 1 © stroma certification ltd v1.3 commercial energy assessment introduction...

Documents

stroma stroma

stroma certification

stroma accreditation

stroma technology

sa ac regional

calculated energy

energy rating of buildings

greater energy efficiency