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Navarra constructs over 500 energy efficient homes for social housing

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The region of Navarra is building over 500 nearly zero-energy building (NZEB) units to provide affordable and energy efficient homes for their citizens.

Nearly zero-energy buildings have very low energy consumption due to their design and the materials used in their construction and reduce energy consumption by 75% compared to standard buildings. The project will also contribute towards social integration and urban regeneration through the provision of affordable rental housing.

With a €40 million loan from the European Investment Bank, NASUVINSA, the public agency responsible for urban development and social housing projects in Navarra, will manage the construction of 78,000 square metres of housing over the next three years.



Lessons learnt

• It’s important to demonstrate the need in the real economy for low energy demand buildings and combine the narratives around energy poverty and the supply of affordable rental housing. • To speed up the approval of the loan, it’s crucial for a public company such as NASUVINSA to be involved to show the expertise in construction but also a close relationship with the government.

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Economic effect

The energy savings are estimated to be 2,298.3 MWh/year of primary energy (a 75% reduction against the baseline), corresponding to savings of 748.8 ton CO2 /year once the project is completed. Other expected results include: • 90% reduction in the cost of heating • Reduction in maintenance costs of buildings • Use of renewable energy for heating • Further energy use reduction due to behavior change (training provided to householders on the use and maintenance of their new homes) • Improved indoor air quality through the monitoring of interior and exterior temperature, indoor relative humidity and CO2 concentration levels • Employment of approximately 700 people during the period of implementation