Nearly Zero Energy Buildings (nZEB)

WHAT IS NEARLY ZERO ENERGY BUILDING (NZEB)?

 

Nearly Zero-Energy Building isa building that has a very high energy performance. The nearly zero or very low amount of energy required to meet the buildings needs should be covered to a very significant extent by energy from renewable sources. including energy from renewable sources produced on-site or nearby.” *

* Article 2 (1ª). Directive 2010/31/EU of the European Parliament and of the Council, on energy performance of buildings

The energy performance of a building means the calculated or measured amount of energy needed to meet the energy demand associated with a typical use of the building, which includes, inter alia, energy used for heating, cooling and ventilation, hot water, lighting.

To calculate the primary energy indicator, the primary energy and the squared surface are used. Primary energy can come from renewable energies (solar, geothermal, tidal) and non-renewable energies (fossil fuels, uranium).

In this framework hotels are of paramount importance because 1% of total CO2 emissions globally come from their energy consumption, which can be potentially saved by up to 50 %. Best practices show that energy consumption can be reduced from 6 % to 2.5 % of annual turnover.

The mandatory compliance with the EPBD-recast applies to all EU28 Member States and to all buildings independently of the type and their typical use.

WHAT ARE THE ENERGY NEEDS OF A HOTEL?

The energy needs of a hotel include hosting and non-hosting functions:

Hosting functions (guests’ rooms, reception hall, offices, bar, restaurant,  sitting rooms, meeting rooms)

Energy uses: Heating, domestic hot water, cooling, mechanical ventilation, lightning, appliances

 

Non-Hosting functions (kitchen, laundry, swimming pool, spa, technical rooms, sauna, gym)

Cannot be regulated and may use more energy than regulated hosting functions.

WHAT IS THE ROLE AND THE BENEFITS OF nZEB?

neZEH can actively support SME hotel owners in their investment decisions towards nZEB, providing technical assistance and practical tools. It can help hoteliers to reduce operational costs, to improve the image and services, so as to enhance their competitiveness. Nzeb can prove the feasibility and sustainability of neZEH projects and contribute to the EU efforts and according to the 2020 climate and energy EU package in reducing greenhouse gas levels by 20 %, increasing share of renewables by 20 % and reducing energy consumption by 20%.

To learn more about how nZEBs and how it affects hotels, check the training materials "Towards neZEH Hotels-Benefits, Steps and Guidelines" for hoteliers here