Energy efficiency in the building sector
Energy renovation of non-residential buildings
The definition of commercial buildings is specified by each state respectively, in accordance with their particularities and specific requirements. Commercial non-residential buildings in Croatia are defined as the construction works of mainly commercial and hospitality purposes (more than 50% of the gross floor area intended for the business or service industry activities), including office and trade buildings (stores, shopping centres, retail warehouses), hotels, and other tourist facilities, restaurants, catering facilities, banks, and similar.
In 2010, Croatia had on record 36.5 million m2 of useable floor area in commercial non-residential buildings, which is 5% of the total surface area of all buildings, and it is assumed that they consume somewhat less than 7% of the overall energy consumption.
In August 2014, the Government of the Republic of Croatia adopted the Programme of energy renovation of non-residential (commercial) buildings, the goal of which is the renovation of commercial buildings applying energy efficiency measures, in order to achieve energy class B, A, or A+. Under the energy renovation programme economically viable, energy efficient technologies and measures will be applied to the commercial non-residential buildings for the purpose of development of new activities and entrepreneurship, continuous and systematic energy management, strategic planning and sustainable management of energy resources at national, regional, and local level. In addition, an analysis and impact assessment will be prepared of the benefits of the buildings renovated in compliance with energy efficiency requirements with regard to an increase in the health of tenants of these buildings, the reduction of energy consumption, reduction of emissions of CO2, as well as to the induced and indirect employment and changes in the economy.
Energy renovation of the existing commercial non-residential buildings is primarily aimed at the construction works built before 1987, which consume more than 300 kWh/ m2 ofenergy for heating (even though the average is 220-250) due to poor or no thermal insulation. However, apart from the renovation of the existing buildings, it is vital to stimulate the construction of new buildings in line with low energy or passive standards.
The Environmental Protection and Energy Efficiency Fund has developed the programme of co-financing that is based on the Government Programme, under which economic operators have a funding scheme available in the form of a grant or interest-free loans, and it has co-financed the costs of construction and technical supervision for:
- the renovation of the envelope,
- centralisation and modernisation of the heating system using RES,
- centralisation and modernisation of the cooling and ventilation system using RES,
- centralisation and modernisation of the domestic hot water system using RES,
- modernisation of the lighting system (compulsory 20% higher efficiency),
- measures for reducing water consumption,
- installation of the central surveillance and control system,
- construction of the new low energy or passive buildings (energy class A or above).