Optimizing energy efficiency of building portfolios
In a nutshell
ECOCITIES® supports operators of building portfolios (building groups) in deciding how present budget can be used most effectively to align the energy efficiency of their real estate to required political, economic and environmental objectives. It considers the thermal envelope, heating, cooling, alternative energy networks, photovoltaics, solar thermal and lighting

ECOCITIES also enables the efficient administration and maintenance of building groups resp. real estate portfolios. It proposes measures the minimum investment and energy costs and cause maximum CO2 reduction.

Your Benefits
  • Significant Cost Reductions
  • Legal Compliance
  • Efficient Decision Making
  • Increased Awareness
  • Cities
  • Companies
  • Real Estate Owners
  • Building managers
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Have a look at the unique
Web-based and centralized building administration
Energy accounting and monitoring
Interactive scenario analysis and optimization
Evaluation and definition of energy efficiency strategies
Compliance to legal requirements
Alignment and monitoring of the contribution to national and European energy goals
Consideration of interdependencies and compatibility
Local energy production and use
Fine grained building data
Get a detailed overview of all features
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Legal Background
The 2020 package is a set of binding legislation to ensure the EU meets its climate and energy targets for the year 2020.

All EU member states are bound to decrease its greenhouse gas emissions till 2020 by 20% (based 1990 levels), improve its energy efficiency by 20% and increase -renewable energy production by 20% (cf. EU climate and energy package 20-20-20). One of the largest greenhouse gas producers (with about 40% of CO2 emissions) is heating, cooling and hot water production in buildings. At the same time the building sector has the largest potential for energy savings. In their effort to lead a change towards greater energy efficiency and a reduction in CO2 emissions, many cities and companies are in the process of devel- oping low carbon action plans.

However, since the costs for developing optimal action plans and continuously updating and improving them are very high, the efforts are often hindered by the tense financial situation of cities and companies. With significant economic and environmental downsides, because the consequences are additional costs due to the non-compliance to the national and EU emission goals (e.g., resulting in fines) and unutilized energy saving potential (dead capital).

Energy Efficiency Directive

The 2012 European Energy Efficiency Directive (EED – 2012/27/EU) requires member states to save at least 1,5% of their yearly energy consumption per year.

Within the member states companies are required to implement energy efficiency measures to achieve the national target values. Non-compliance results in fines for member states and companies.

EED Goals

Binding definition of national energy efficiency goals until 2020

3% refurbishment rate for public buildings

At least 1,5% energy savings per year – supported by fines in the case of non-compliance

Mandatory energy audits in large companies

Reduction of energy costs by lowering energy consumption

Improving the energy supply security by diversifying the energy imports

Stimulating economic growth

Climate protection by consumption reduction and implementation of energy efficiency measures

Find out about our main

ECOCITIES presents decision makers solutions that maximize the annual return of investment of energy efficiency measures and increases their acceptance from an economic point of view. For the government and the society as a whole more awareness for energy efficiency and the effective reduction of CO2 emissions contributes to the implementation of EU legislation. The stakeholders profit from ECOCITIES in the following ways:

Cities and Municipalities


Real estate owners

Building managers

Here are some of the

Cost Reductions

ECOCITIES reduces the effort and, thus, the costs for managing, optimizing and monitoring the energy efficiency of entire buildings groups up to 70%. As a consequence, cities and companies save costs by contributing to the achievement of climate goals (thus reducing fines for non-compliance) and fully utilizing unknown energy saving potential.


ECOCITIES provides decision makers with the first solution that allows them to easily monitor and optimize their contribution to European climate goals and energy saving initiatives (e.g., 20-20-20 and Energy Efficiency Directive).

Efficient Decision Making

ECOCITIES allows decision makers to get a clear overview of the unmanageable num- ber of options and (inter-)dependencies related to economic, technical and environ- mental issues. It enables them to simulate different strategies and learn about the (long term) consequences of their decisions.

Increased Awareness

A time-based perspective on data allows the user to continuously monitor and proactively detect significant changes of important variables over time. ECOCITIES automatically identifies risks and reports them to the responsible people.
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System Interface
Web-based and centralized building administration
With ECOCITIES all relevant building data is managed in a structured and centralized way. A map based view of all managed buildings allows a quick overview and a simple selection of any building. The web-based system allows decentralized access to this data based on a clearly defined access control model.
Energy accounting and monitoring
ECOCITIES assesses the energy consumption of single buildings and the entire building group based on actual meter data. This enables the easy monitoring of energy consumption, and the retrospective evaluation of implemented energy efficiency measures (calculated vs. real energy savings). Meter data is assessed either automatically via interfaces from existing systems or manually via the web interface. The decentralized manual input reduces the overall effort by distributing the assessment to people which live or work in the buildings.
Interactive scenario analysis and optimization
ECOCITIES automatically identifies energy efficiency measures capable to reach your desired target values in terms of overall budget constraints, CO2 emission targets, and energy cost reduction goals. The interactive user interface enables all relevant stakeholders (politics, financial, building experts, etc.) to identify the most suitable refurbishment strategy based on their building group specific goals. For each strategy ECOCITIES provides payback time and detailed advice on measures which have to be implemented to reach the set energy efficiency goals.
Evaluation and definition of energy efficiency strategies
ECOCITIES provides a comprehensive decision support system for the definition of energy efficient building groups. It considers (i) investment costs, (ii) running energy costs, (iii) CO2 emissions, (iv) share of renewable energy, (v) heating demand, and (vi) primary energy demand of the entire building portfolio and gives suggestions on how to optimize the entire building portfolio. The sets of measures are tailored to your specific building stock and associated constraints (e.g., heritage protection). For each set of optimal measures, ECOCITIES calculates the associated investment costs, break even, building-specific measures, reduced energy costs, CO2 emission reduction, and overall heating/primary energy demand of your entire building group.
Compliance to legal requirements
ECOCITIES ensures that compliance to legal requirements, such as minimum u-values or heritage protection etc., is given. In addition, advanced legal requirements, such as ISO or EN standards, can be modelled in the system. ECOCITIES then ensures that those requirements are taken into consideration when calculating the optimal energy efficient building group.
Alignment and monitoring of the contribution to national and European energy goals
ECOCITIES bridges the gap between global action plans such as EU 20-20-20 and their actual implementation at the level of building groups with their different requirements and contexts. Based on the set energy efficiency goals (CO2 emission reduction, budget constraints and targeted share of renewable energy) ECOCITIES automatically identifies strategies to reach the targets for your specific building group. It provides you with detailed suggestions in the field of thermal refurbishment, energy production (PV and solar thermal), and heating system modernization. ECOCITIES is an enabler for the realization of individual, national, and European energy goals. Thus, it provides synergies with existing endeavors of achieving national and European energy goals.
Consideration of interdependencies and compatibility
ECOCITIES automatically considers the energy saving potential of combining refurbishment, local energy production and efficient energy distribution and storage measures. ECOCITIES automatically ensures the legal and technical compatibility of the energy efficiency measures. Inter alia, the following energy efficiency measures are considered:

  • Thermal hull improvements (roof, upper-most and basement ceiling, outer walls, windows/doors, etc.) – for each construction ECOCITIES chooses from three different quality levels regarding the u-value
  • Installation of PV and solar thermal systems – for each energy production system ECOCITIES chooses from three different quality levels regarding the production capacity
  • Heating system modernization and replacement
  • Attaching buildings to alternative energy networks and energy carriers
Local energy production and use
ECOCITIES considers the local topology of the relevant buildings. For example, ECOCITIES automatically evaluates the distance of the buildings to existing energy networks to identify possible alternative energy carriers for each building. As such it influences the suggestions on improving or replacing the heating systems. Technical compatibility is automatically ensured by ECOCITIES, i.e., only heating systems which require an existing or potentially installable energy carrier will be suggested. ECOCITIES automatically evaluates roof areas regarding their suitability for PV and solar thermal installations in combination with existing or new heating systems.
Fine grained building data
Besides building base data such as u-values and areas ECOCITIES also integrates a document management system used for the clear administration of building plans, energy certificates, etc. ECOCITIES allows to store fine grained details about the building, such as renovations, heating systems, building geometry, etc.

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