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www.ecofective.com © 2013 Energy and cost savings in existing buildings Ecofective and its energy management system EE2 Short presentation Mats Pettersson Ecofective AB

Energy efficiency in existing buildings

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Ecofective is a fast-growing Swedish-German company that delivers a proven and robust IT-based solution for managing and optimizing the energy balance in properties.

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Page 1: Energy efficiency in existing buildings

www.ecofective.com © 2013

Energy and cost savings in existing buildingsEcofective and its energy management system EE2

Short presentationMats PetterssonEcofective AB

Page 2: Energy efficiency in existing buildings

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About Ecofective

• Founded in 2009 as a consulting firm, in 2012 expanded by Mats Pettersson and Dirk Uhlemann to a high-tech supplier of IT-based energy management and energy performance contracting.

• Highly skilled founder and management team, with more than 20 years of experience in the development and implementation of IT-based systems for energy efficiency in buildings.

• Scientifically proven energy management system EE2, currently implemented in more than 120 large multi-tenant and office buildings in Sweden and Germany.

• Comparative measurements by the Fraunhofer Institute for Building Physics (IBP) recently confirmed a significantly lower energy consumption by using EE2 from Ecofective*.

• Presently, Ecofective is continuously growing in Sweden and Germany, an innovative energy performance contracting model will be available soon.

• Partner network includes Swedish Energy Agency, KTH Stockholm, Business Sweden, Stockholm Cleantech Association and IVL Stockholm, Gothenburg.

* IBP Report 523, July 2013, http://www.ecofective.com/images/downloads/in-the-media/2013-07-30-IBP-Report.pdf

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Today’s contextEnergy and cost savings in existing buildings

Global view

• World

• EU

Regional view

• Country

• Region

• City

Existing buildings

• IT-based energy-efficiency solution

• Between 13 and 25% less heating energy

• Low investment between 1 and 3 €/m2

• 1% of cost of a classical refurbishment

• Rapid repayment in less than 24 months

• Easy installation on top of the existing HVAC

• Comprehensive data pool for future investments

• Energy signature, energy performance contracting

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Building’s energy

footprint

Multitude of influences on a building’s energy foot print

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Different time-scales

A. Immediate (minutes – hours)

Influencing factor: Compensated by:

Outdoor climate • Radiator flow temperature

• Thermostat on radiator

Other internal heat sources

• Thermostat on radiator

User/tenant behavior

• Thermostat on radiator

B. Short-term (days – months)

Influencing factor: Compensated by:

Adjustment of heating curve

• Maintenance service

Adjustment of ventilation plan

• Maintenance service

Adjustment of hydraulic balance

• Maintenance service

C. Mid-term (months – years)

Influencing factor: Compensated by:

User behaviour and awareness

• Communication• Maintenance service

Aging of system components

• Maintenance service

End-of-lifereplacement

• Structural investments

D. Long-term (years – decades)

Influencing factor: Compensated by:

Aging of thermally relevant building parts

• Structural investments

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EE2 generates added value within all time-scales

• Energy savings generated by thermodynamic optimization (TDO) pays back within a few years

• Notification when irregular operating conditions occur

• Data stored/made available for analytics• Mid- and long-term influencing factors• “Before/after” and “on/off” comparisons

• Continuously refreshed energy signature• Current energy footprint• Benchmarking with similar buildings• Indicators for planning/setting targets

• Improved base for evaluation processes• Due diligence• Refinancing• Asset valuation

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Thermodynamic optimization (TDO) as an add-on to the existing control systems

Energysignature,database

TDO engineDirect impact

EE2 analyticsDirect impact,maintenance service

EE2 analyticsInvestment recommendation,maintenance service,social interfaces

EE2 analyticsInvestmentrecommendation

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Our present service offering for youHow you benefit from thermodynamic optimization (TDO ) with EE2

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• State-of-the art software for thermodynamic optimization of existing buildings, real-time reporting and analytic tools, detailed body of data for sound investment decisions

• Up to 25 percent heating energy reduction with 1% of the budget needed for a traditional energy efficiency refurbishment, which means 1-3 €/m² instead of 200-740 €/m²

• IT-based solution, compatible with existing central building control and HVAC systems (gas, oil, district heating etc.), irrespective of manufacturer, age or type

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Main characteristics of EE2Low-cost IT-based energy-efficiency solution for ex isting buildings

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• Software for data collection and thermodynamic optimization

• Off-the-shelf solution for wide use, installation in less than a day

• Compatible with all kinds of HVAC systems (gas, oil, district heating)

• Installed on top of the existing central heating (HVAC) and building control system

• Real-time reporting and analytic tools (temperature, thermodynamics, forecasting)

• Low-cost IT-based solution making existing buildings “intelligent“ by using IT

Key Elements of EE2: 1. Wireless Indoor Temperature Sensors, Central Unit; 2. Mini Weather Station; 3. Climate Chamber including HVAC Sensor Controller; 4. BSU, Building Service Unit; 5. Tunneled VPN; 6. BOC, Building Operations Center; 7. HVAC (Heating, Ventilation and Air Conditioning); 8. Wired Temperature Sensors

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Thermodynamic optimization (TDO) with EE2Free heating power is used to reduce the amount of purchased energy

1. Building thermal behavior

• Building’s heat-loss coefficient

• Heating system

• Radiator• Ventilation

• Occupants’ energy consumption

• Façade characteristics

• Climate factors

2. Continuous calculation of P free

3. Setting the flow temperature

• Flow temperature as a function of P radiator

• Heating curve of HVAC is mirrored in EE2

• Setting the outdoor temperature to match the desired flow temperature

4. Continuous monitoring

• Continuous adjustment of the temperature in the climate chamber

• Continuous monitoring of results

• Adaptation to the thermodynamic modelif necessary

UU

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Scientific proof*Fraunhofer Institute for Building Physics IBP

* IBP Mitteilung 523, Juli 2013, http://www.ecofective.com/images/downloads/in-the-media/2013-07-30-IBP-Report-de .

• Location: Holzkirchen near Munich – outdoor testing site with two identical buildings

• Project design: Comparative measurements in two identical single-family buildings, one of them equipped with the Ecofective system EE2, one without

• Test time: Mid-January until the end of April 2013

• Test result: 13 percent less gas consumption using the energy efficiency management system EE2. Extrapolated for a whole year, the results show a potential of around 20 percent energy savings due to thermodynamic optimization with EE2

Energy savings: 13%

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Success storiesStudent residence hall

• Location: Frankfurt, Germany

• Type of building: Multi-tenant residential building for students

• Dwelling space: 4,500 m2

• Investment: 9,000 €, 2 €/m2

• Installation: Less than one day

• Measurements: Since Q4 2012

• Energy consumption: 110 kWh/m2/a without Ecofective system EE2, 90 kWh/m2/a with

• Results: Savings of 6,000 € per year, repayment in 18 months

Energy savings: 18.2%

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Success storiesMulti-tenant building

• Location: Frankfurt, Germany

• Type of building: Multi-tenant building

• Dwelling space: 9,270 m2

• Investment: 9,000 €, <1 €/m2

• Installation: Less than one day

• Measurements: Since Q4 2012

• Energy consumption: 125 kWh/m2/a without Ecofective system EE2, 108 kWh/m2/a with

• Results: Savings of 7,000 € per year, repayment in 16 months

Energy savings: 13.6%

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Success storiesMulti-tenant building

• Location: Berlin/Marzahn

• Type of building: Multi-tenant building

• Dwelling space: 8,728 m2

• Investment: 12,600 €, <1.45 €/m2

• Installation: Less than one day

• Measurements: Since Q1 2013

• Energy consumption: 96 kWh/m2/a without Ecofective system EE2, 74 kWh/m2/a with

• Results: Savings of 9,600 € per year, repayment in 16 months

Energy savings: 22.9%

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Success storiesMulti-tenant building

• Location: South of Stockholm, Sweden

• Type of building: Residential building with 80 apartments, 8 floors

• Dwelling space: 6,200 m2

• Investment: 15,000 €, 2.40 €/m2

• Installation: Less than one day

• Measurements: Since end of 2010

• Energy consumption: 127 kWh/m2/a without Ecofective system EE2, 111 kWh/m2/a with

• Results: Repayment in 1.7 years, energy savings amounting to 14% per year

Energy savings: 12.6%

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Success storiesOffice building

• Location: Uppsala, Sweden

• Type of building: Office building of the Swedish government, 4 floors

• Dwelling space: 11,894 m2

• Investment: 18,000 €, 1.50 €/m2

• Installation: Less than one day

• Measurements: Since end of 2010

• Energy consumption: 40 kWh/m2/a heating energy, 35 kWh/m2/a cooling energy

• Results: Repayment: 2.1 years, energy savings of 14% heating energy and 14% cooling energy per year

Energy savings: 14%

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Challenges & burning issues Let’s talk about them

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• For achievement of the ambitious European energy efficiency goals, there is still a lack of reliable and precise indicators for identifying changes and deviations in energy performance in existing buildings. Some reasons:

• There is a huge diversity of legacy HVAC systems (manufacturer, type) limiting or even hindering cost-efficient integration with automated optimization processes

• A complex and regulated division of roles in the value chains of energy and real estate management for providing heating to the end-user – all roles having different projections of risk, opportunity and added-value, making it difficult to allow tenants, for example, to benefit from energy savings

• Manifold influences on a building’s specific energy performance requiring a multitude of actions and measures which might have minor effects individually, but collectively become significant

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Challenges & burning issuesLet’s talk about them

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“How can we refinance our investment in an energy management system as quickly as possible?”

“How can we organize the best way that our tenants can benefit from the achieved energy savings?”

“How do we solve classical conflicts of interest, e.g. that our district heating partner wants to sell as much as possible and we want to continuously reduce the amount of purchased energy?”

“How can we motivate the government and the EU to optimize the framework for energy efficiency projects that are not only focusing on traditional refurbishment?”

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Contact

* IBP Mitteilung 523, Juli 2013, http://www.ecofective.com/images/downloads/in-the-media/2013-07-30-IBP-Report-de.pdf

In GermanyEcofective GmbHPasinger Strasse 2D-82152 Planegg

Dirk UhlemannCEO Ecofective GermanyPhone: +49 89 212 312 120Mobile: +49 173 288 89 82Fax: +49 89 212 312 199eMail: [email protected]

In SwedenEcofective ABWaterfront Building,Klarabergsviadukten 63 1tr.Box 190, SE-101 23 Stockholm

Mats PetterssonCEO EcofectiveMobile: +46 70 626 07 02Phone (switchboard):+46 8 577 28 30Fax: + 46 8 692 65 01eMail: [email protected]