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Buildings renovation: Effective tool for energy savings

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Published 07 February 2012, updated 04 June 2012

Improving the energy efficiency of buildings is the single most effective way to meet the EU’s energy savings goals, argues Oliver Rapf of the Buildings Performance Institute Europe.

Oliver Rapf is executive director of the Buildings Performance Institute Europe (BPIE), a Brussels-based organisation that focuses on policy analysis and development in relation to the energy performance of buildings. 

“'BPIE’s model will cut the energy consumption of buildings by over 70% by 2050. This will drastically reduce the EU’s dependency on the import of fossil fuels'.

Oliver Rapf is executive director of the Buildings Performance Institute Europe (BPIE), a Brussels-based organisation that focuses on policy analysis and development in relation to the energy performance of buildings. 

“'BPIE’s model will cut the energy consumption of buildings by over 70% by 2050. This will drastically reduce the EU’s dependency on the import of fossil fuels'.

Put in a nutshell, this is one of the results of an EU-wide survey which the Buildings Performance Institute Europe published recently. About 80% of all buildings in Europe were built before the 1990s, at a time when most EU members had no energy performance-based requirements in their building codes.

In consequence energy efficiency in old buildings is poor, so that buildings consume 40% of total final energy in the EU.

Today we face the question of how to achieve energy performance levels that make our buildings fit for the requirements of the 21st century. This is a century when security of energy supply and climate change concerns will play a much bigger role than before, a century which will see increased ageing of the European population going hand in hand with the likely decreasing purchasing power of pensioners.

Some answers are provided in a recent BPIE report which models a number of energy saving renovation scenarios for the European building stock. Of all the options modelled, a two-stage renovation strategy seems to be a good option which balances investment needs with substantial savings of energy and CO2.

This strategy delivers a high internal rate of return on the money invested while also achieving a CO2 reduction of over 90%, as mandated by the EU 2050 roadmap. But don’t be misled: the meaning of 'two stage' is not equivalent to doing little now and more later.

Quite the contrary. A significant ramping up of renovation activities to two and a half times the current level is needed by 2020, as well as a significant increase in the ambition level of the applied renovation measures. The volume of moderate and deep renovations will have to be increased by roughly a factor of four compared to today, leading to a decrease in the share of renovations which deliver only minor energy savings.

This is a challenge for the supply chain in its widest sense. Architects and planners, material and technology suppliers, the construction industry and the finance industry will have to adjust their offerings to service this growth. And policymakers will have to find the political will to develop and implement more effective policies to stimulate this emerging market.

The renovation of the European building stock to achieve these high energy-saving ambitions will provide an enormous economic stimulus - something which is urgently needed in these times of austerity.

New financing vehicles should make it interesting for private and institutional investors to invest in energy efficiency project portfolios which are designed to deliver long-term stable returns. This should certainly be appealing to investors who prefer low-risk investments over high-risk ones.

Today, Europe’s heating demand is still predominately met by fossil fuels. BPIE’s two-stage scenario reduces the energy consumption of buildings by over 70% by 2050. Cutting the energy demand of buildings will enable the EU to drastically reduce its dependency on the import of fossil fuels. And it will remove the pressure to exploit new gas field discoveries which currently threaten to increase regional tensions in the Eastern Mediterranean Sea.

It takes no supercomputer to add up the benefits. Delaying action will mean missing out on opportunities to create significant savings for society and individual consumers, and to forego job market stimulation.

Energy saving strategies can deliver a wide range of economic, societal and even geopolitical benefits. All these should be at the heart of political decision making."

COMMENTS

  • Oliver Rapf is perfectly right in his analysis and I can only invite all stakeholders to review the piece of work of BPIE that supports his argumentation. The evidences are compelling.
    Deep renovation of Europe's building stock is feasible. All it takes to trigger the movement is a few concrete measures in the draft Energy Efficiency Directive that is under discussion in the EP at this exact moment:
    1. national renovation road maps for 2050 with intermediary targets for 2020, 2030 and 2050,
    2. a requirement for public authorities to renovate their buildings to kick start the movement and facilitate the uptake of technologies
    3. putting in place the right financial instruments that will trigger private investments.
    This is ultimately how the EED can serve to boost economic growth in Europe and can generate millions of new local jobs.

    By :
    Bertrand Cazes
    - Posted on :
    08/02/2012
  • It is not only that this is the most effective way to reach these goals (ie results vs resource) it is also probably the quickest way.

    Consider that building controls are typically in situ. but are widely under-utilised for greatest effect and poorly commissioned.

    Poor performance of buildings can be made obvious in relationships between weather, building activity and energy consumed. With Smart meter technologies, physical weather models being omnipresent, and in browser processing capabilities - there is a whole new market for low cost diagnostics growing.

    The infrastructure for analysis exists, as does expertise (eg http://kwiqly.com ) - Missing are awareness of the quick wins available from simple improvement measures and the imprimatur from government, to give good science the authority it deserves.

    As an powerful but trivial example, we studied many hundreds of buildings looking at peak load patterns around Europe (with no site visit required) and found that without exception control system observance of Daylight Savings Time had not been implemented. The capital outlay of installing controls is a sunk cost - and we simply need to exploit the technology that is to-hand more effectively.

    An obvious question arises - why is this not done ?
    The answer is sadly that buildings are commissioned under pressure at the time of handover, while not under normal use cases, and specifications are lifted off a shelf rather than tailored to customer needs.

    By :
    james ferguson
    - Posted on :
    11/02/2012

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