Carboun: Advocating Sustainability in the Middle East

Comparing Estidama’s Pearls Rating System to LEED and BREEAM

Karim Elgendy

UPDATED – In April 2010 the Estidama program of the Abu Dhabi Urban Planning Council partially released the first version of its rating system suite, The Pearls Rating System for Estidama. The release included the design and construction portions of the the rating system suite which includes rating systems for buildings, villas, and neighborhoods.

Prior to its release Estidama has occasionally referred to the upcoming system as one that learns from its established predecessors, the British BREEAM rating system and the American LEED rating system (BREEAM stands for British Research Establishment Environmental Assessment Method, and LEED stands for Leadership in Energy and Environmental Design). The decision to learn from these rating systems was not only to learn from their mistakes but also to help create a system whose requirements are familiar to the market. On the other hand, the Estidama program asserted that the Pearls Rating System would not be a direct copy of either systems given the environmental and cultural differences of the Emirates

Given the debates that exist amongst practitioners and researchers on both sides of the Atlantic on the merits, shortcomings, and differences between BREEAM and LEED. An analysis of Estidama’s Pearls Rating System in comparison to these two established rating systems was necessary. The first version of the Pearls Rating System for Estidama will be compared to the latest version of the LEED rating system, LEED 3.0 (also known as LEED 2009), and the latest update of the BREEAM rating system, BREEAM 2008.

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The State of Energy Efficiency Policies in Middle East Buildings

Karim Elgendy

Energy use in buildings accounts globally for nearly 40% of global energy consumption and 36% of total energy-related carbon dioxide emissions. These percentages are almost equally split in two halves between the industrialized countries and the rest of the world (Price et al., 2005).

Our buildings use energy in two ways; first, to keep our interior environment comfortable through cooling, ventilation, and heating our spaces; second, to power the appliances that we have come to depend on such as home appliances, lighting systems,computers, and other office equipments. To reduce this high percentage of energy use and the resultant carbon dioxide emissions, both sources of energy use in buildings must be addressed. The first energy use can be addressed by improving the building envelope’s efficiency in order to reduce the need to condition its spaces (cooling, heating, and ventilating). This method of conserving energy use includes a vast array of passive low energy design strategies that depend on the building’s environment and context. The second energy use can be addressed by improving the efficiency of appliances and equipment used inside buildings including improving the efficiency of lighting and dissemination of improved stoves for cooking in rural areas. Continue reading The State of Energy Efficiency Policies in Middle East Buildings

The First Low Energy House in Jordan

Aqaba House, Copyrights Joseph Zakarian, Jo Magazine

UPDATED – Jordan’s first low energy house in Aqaba is a residential project designed with the intention of creating a prototypical low-cost energy efficient building that achieves substantial energy use reductions without incurring additional construction costs.

After launching a design competition for a prototypical energy efficient house the house owner – a Jordanian environmental researcher- in collaboration with the Jordanian Center for the Study of the Built Environment, chose to proceed with a practical low energy design with an architecture that resonates with local aesthetics.

The competition’s winning scheme by the Dutch architect Florentine Visser, was based on a 3-floor design that included the many spaces required by the owner’s brief (including 6 bedrooms, 3 bathrooms, a car garage, and a basement) in a house with a total area of approximately 420 sqm.

In her approach to designing an energy efficient house, the house’s architect used a combination of passive low energy design strategies and efficient active systems. Passive strategies are strategies that use design to reduce the need for heating and cooling. In the context of the Middle East passive design mostly refers to passive cooling strategies since the cooling requirements of middle eastern buildings far exceed their heating requirements.

Active systems, on the other hand, are mechanical systems such as heating, ventilation, and Air conditioning units (HVAC) efficient active systems use less energy to heat, ventilate, or cool buildings.

Most successful low energy buildings use a combination of passive strategies, active systems, and renewable energy generation to reduce their energy use ,with some buildings achieving the ultimate target of net zero energy, which essentially means that a building -or a development- generates all the energy that it consumes.

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Masdar City Masterplan Reviewed

Masdar City Masterplan. Copyright Masdar, Foster+Partners

When Masdar City was first announced in 2007 by the Masdar Initiative, it claims that, when completed, it will become the world’s first zero carbon, zero waste development, while maintaining the highest quality of living. Foster + Partners and a team of environmental consultants including WSP and Transsolar have been appointed by Masdar to design the masterplan and the first stage of the project which broke ground in February 2008.

Masdar City’s Master plan is claimed to “meet and exceed” the principals of One Planet Living (OPL), a set of ten guiding principles of sustainability, proposed in a joint initiative by WWF, the global conservation organization and Bioregional Development, whereby everyone lives within their fair share of the Earth’s resources. The principles include Zero Carbon, Zero Waste, Sustainable transport, Sustainable materials, Sustainable water, and Sustainable culture and heritage.

The project also comes in the context of a rapidly increasing population and an economic boom in Abu Dhabi which -, together with new laws opening the emirate’s real estate to the free market- led to speculation and a housing shortage estimated in 2008 to between 35,000 and 50,000 dwelling units. This shortage has prompted the state to allocate billions for the construction of residential buildings, especially for foreign workers and western expatriates. This housing shortage has also resulted in rising house prices, which led to discussion of legislations that would introduce a 20 per cent quota for low-income housing in future developments.

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Comparing Estidama’s Pearls Rating System to LEED and BREEAM

The State of Energy Efficiency Policies in Middle East Buildings

The First Low Energy House in Jordan

Masdar City Masterplan Reviewed

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