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Claudio Rochas, Kristaps Zvaigznitis, Agris Kamenders, Gatis Žogla
Energy performance contracting for multi-family residential buildings in Latvia. First steps
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2011 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
Energy efficiency of buildings has become a significant issue in Latvia and across Europe. More than a half (by heated area) of Latvian
housing stock consists of multi-family buildings. 63% of buildings are panel houses built during the Soviet era when no one thought about
energy efficiency issue and energy resources was very cheap. Today, energy prices are increasing, the EU sets targets to increase energy
efficiency, reduce of GHG emissions and promote the use of renewables. Building renovation is a sustainable approach for Latvia to
achieve these objectives because the housing sector is a huge consumer of energy – 40% of total energy consumption. A great way to
promote such renovations is to use Energy Performance Contracting (EPC) concept. EPC is a legal contract between the beneficiary and
the provider (an ESCO) of an energy efficiency improvement measure, verified and monitored during the whole term of the contract,
where investments (works, supplies or services) in that measure are paid for in relation to a contractually agreed level of energy efficiency
improvement.
In Latvia, EPC+ contracting has been recently applied to the comprehensive renovation of multi-family residential buildings. A study is
being carried out on 12 projects, which have been implemented over the last 5 years. Measurements and calculations have been carried
out. Based on 2013 data, on average space heating consumption of fully completed buildings is down to 77 kWh/(m2 a) and network
circulation losses is down to 4.5 kWh/(m2 a), meaning a combined figure of 81.5 kWh/(m2 a). The energy savings of the renovated
building stock are calculated at 55%.
On average space heating consumption of buildings partly completed is expected to be down to 72 kWh/(m2 a) and network circulation
losses down to 2.4 kWh/(m2 a), meaning a combined figure of 74.4 kWh/(m2 a). The energy savings of the renovated building stock are
calculated at 65%.
Keywords: energy efficiency; Energy Performance Contracting; multi-family buildings.
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