The pilot site Ruse is the fifth largest city of Bulgaria. Here, two buildings are part of the BECA project. The buildings are owned by the municipality`s company ‘Zhilfond’ and have a total surface of 8,269 m² with 120 dwellings. The buildings have been built in 1999 and 2001.

Within the BECA project, 75 dwellings, ranging in size from 46 m² to 100 m², will be equipped with the BECA services, expecting these households to reach overall energy saving of 20%.

BECA services will be offered to 165 tenants, including people from all ages with a medium and high education level, mostly Bulgarian and generally with access to the Internet at home.

Heating and hot water is provided by electric boilers in each flat. If several such devices are switched on simultaneously a large peak and the transient processes can destroy sensitive equipment in the house.

BECA services will enable tenants to access their real time electricity and water consumption informationon a web portal and they will benefit from electricity peak reduction services.

The following table provides the elements which will be measured during baseline and reporting period:


Building 121

Building 50





Electricity (kWh)



Electricity (peak)



Cold Water (m³)



Other factors

Local Heating Degree Days


Heating Limit Temperature used for HDD




Pilot Site Video

<iframe style="display: block; margin-left: auto; margin-right: auto;" src="" frameborder="0" width="425" height="250"></iframe>


Key Facts






University of Ruse Angel Kanchev (UNIRUSE)


Municipality of Ruse (RuseMun)


Association Municipal Energy Agency Ruse (AMEA)


The awareness raising service for tenants (RUAS) measures the following parameter(s)

Electricity (heating and domestic uses), Cold Water

The management service used by professionals (RMS) measures the following parameter(s)

Electricity (heating and domestic uses), Cold Water

Expected savings


Dwellings equipped with service




Resource Usage Awareness Service (RUAS)

Service Description

Tenants have access to the following services:

  • Web portal for consumers, providing energy and water consumption information for each dwelling.
  • Monthly reports with recommendations on the resource consumption.
  • Graphical comparison of the energy consumption with previous periods and similar households.



WEB Portal

Link to prototype



Parameters  shown

Electricity for heating and domestic uses, cold water

Periods data is visualised

30 minutes

Benchmarking opportunities / comparisons

  • Previous period
  • Similar households


  • Physical units
  • Amount in money

Target setting

Tenants can set a target for their monthly bill and on which day the target will be met.


The portal forecasts the monthly bill based on current consumption, statistics from previous periods and referential values from similar dwellings.

Alerts (in portal, email, sms, phone call)


Saving tips

Based on the current consumption, referential values and consumption of similar households/dwellings, advices are displayed. Advices are hints for saving energy recorded in the system by an energy expert.

Report by email

Emails with consumption data on daily, weekly or monthly basis.

Energy coach

In cases where automatic advices do not have the intended effect, an expert from AMEA will get in contact with the tenants in order to provide them with advices and hints for using the system and for improving their resource consumption behaviour.


Resource Management Service (RMS)

Service Description

The RMS is focusing on the automated control of the largest consumer in the dwelling in order to achieve peak demand reduction and energy savings. The RMS includes also:

  • Monitoring electricity and cold water by internal and external experts in order to provide advises on the optimisation of the systems and uses.
  • Digital electricity and water meters will be installed in each dwelling as well as controllers for the management of the electrical appliances. For each appliance controlled by the system the tenant will be able to see its status and when it will change (switched on or off). The tenant can choose to override the systems command.
  • Based on periodic information about the consumed energy and water of the targeted group dwellings, AMEA and experts from the University of Ruse will implement statistical analyses. AMEA and the University of Ruse will also propose measures to optimise the resource consumption, including the decrease of peak energy consumption.
  • Automatic control of the appliances with the largest consumption in the dwelling. Based on the occupancy information entered by the tenants, the appliances with the largest consumption will be controlled by the system in order to ‘shave’ the energy consumption demand peaks.



WEB Portal



Parameters  shown

Electricity (heating and domestic uses), Cold water


AMEA receives warning if tenants override the system settings above a certain threshold. Emails and consultation with energy experts suggest how a better setting of the tenants’ RMS can avoid this in the future.

Peak shaving

Controlled by an algorithm, appliances with the largest consumption are switched on/off in order to avoid peaks. If peaks still occur, the same appliances are periodically switched on/off based on absence information and hot water available.


  • Absence information (Tenants will have the ability to mark the periods when they are not present in the dwellings in order to enable the system to control the appliances in their home more precisely).
  • Controlled appliances status visualisation and ability to override system control.