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SIM-PLIFIED

Everything from green building certification, energy modeling and passive buildings simplified just for you.

LEED Certification Challenges for México

6/23/2021

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Mexico has long been a leader in LEED certification, it was recognized in 2019 to be the 8th country in gross square meter LEED certified projects[1] and has certified 232 projects since then (December 2020 to July 2021)[2]. It has been recognized to be a driver of increased rent/sale value, energy consumption savings, reduce maintenance cost, occupants comfort and to be environmentally friendly[3]. The importance of green building certifications, where LEED is the most applied worldwide, is to follow a holistic guideline and have weight the compliance from a recognized third party.
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Image courtesy of USGBC[2]. LEED®, and its related logo, is a trademark owned by the U.S. Green Building Council®
Considering these factors why there is not more projects develop in our country? We believe it’s because of:
  • Lack of information or misinformation; and
  • Sustainability construction standards are deficient.
​According to the Dodge Data & Analytics survey from 2018, 19% of the projects are pursuing green building activity based on client request, most of these clients are large companies that to comply with such certifications is at the center of their policies or that they take advantage of stock market green bonds or similar financial tools. Simplified, the certification allows the company to prove to their investors that their investment is environmentally responsible and in the long term generate more profit.
However, for smaller development there is 2 line of thinking: it is as simple as having few solar panels or it is too expensive. First, the LEED certification is not a perfect model but is accessible and touch all main sustainability branches: dense urbanization, urban mobility, fauna/flora conservation, material life-cycle, energy use, human comfort, and society impacts. We recommend you take a look at our LEED page for more details. Second, certification fees, credit documentation, and additional investment for building compliance are added cost but the process provides benefits that extend for the whole life of the building and is recuperated in 2-5 years of operation[4]. It is all a balance that developers and building operators should understand that the increase of 5-10% in sale value is a warranty that the construction will save energy, water, benefit the society.
The second factor to consider for LEED or green building certifications is that in most Latin American countries the minimum construction standards/practices are lacking to protect the environment or are not always followed. This means that following the best international practices and comparing to the latest international standard is a big leap for architect, engineers, and builders and this is reflected into costs that developer/investors are not planning. However, there is a learning curve and once reaching same construction sustainability standards as leading countries there is no higher investment required. Government are not leading the change as other topics are to prioritize such as poverty, healthcare, education, and security. Thus, it is crucial that the private sector lead the way to a healthier building environment.
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Image courtesy of Dodge Data & Analytics - Smart Market Report 2018 [3].
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Image courtesy of Dodge Data & Analytics - Smart Market Report 2018 [3].
Please share your opinion below, your participation means a lot to us.​
References: 
[1] U.S. Green Building Council releases 2019 Top 10 Countries and Regions for LEED, https://gbci.org/us-green-building-council-releases-2019-top-10-countries-and-regions-leed
[2] Country Market Brief, https://www.usgbc.org/resources/country-market-brief
[3] World Green Building Trends 2018 Smart Market  Report,
https://www.worldgbc.org/sites/default/files/World%20Green%20Building%20Trends%202018%20SMR%20FINAL%2010-11.pdf
[4] La certificación LEED, ¿se apaga en México?, https://obras.expansion.mx/soluciones/2015/07/10/la-certificacion-leed-se-apaga-en-mexico
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Net-Zero Energy Home: Case Study of energy modeling to reach 52% energy savings, high daylight and low glare.

11/10/2020

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The architecture industry is evolving to be more integrated and focusing on reduced energy consumption and increasing occupant comfort. Our team has worked closely with OWN*, Environment Friendly Mexican Architecture firm, to improve their latest single-family project at conceptual design phase. Our objectives were to reach Net-Zero Energy, maximize daylight while minimizing glare and take advantage of natural ventilation for passive cooling. We perform analysis using a building energy model and CFD simulations.
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Original Design
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Improved Design
The site climate requires to reduce heating consumption in particular during the night and reduce cooling consumption at mid-day. The temperature is reaching lower temperatures in January, but it is quite constant through the year since the project is located in the north tropical region. We thus would need to reduce slightly solar gain at summer when the sun is at its zenith, this was achieved by adding light shelves that are required to minimize glaring and increase daylight penetration.
The light shelves location to not interfere with glass door operation were placed above them, thus additional glazing was placed above the lights shelves. The additional glazing would also contribute, those openable, to increase the natural ventilation potential. However, the light shelves were not enough to reduce the glare enough, thus a glazing film that reduces the visual light transmittance to 17% in strategic locations. These strategies allow the increase in daylight from 34% sDA** to 76% sDA and reduce glare from 72% ASE*** to 25%ASE, all numbers are the weighted average for the occupied spaces.
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Daylight Lux for ground floor: Left original design, right improved design.
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Daylight Lux for 1st floor: Left original design, right improved design.
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Glare compliance for ground floor: Left original design, right improved design.
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Glare compliance for 1st floor: Left original design, right improved design.
To study the heating/cooling demand and energy consumption we develop a reference building which is based on the IECC-Mexico 2016 and the NOM-020-ENER-2011. Per the client request we use Autoclaved Cellular Concrete blocks with 51mm Polystyrene insulation, double glazing and UPVC window framing. The reduced consumption from these measures was only 17% compared to the IECC reference. Thus, we implement in addition the use of instantaneous water heaters, LED interior and exterior lighting, daylight and presence sensors, EnergyStar home appliances, and outdoor air supply with heat recovery. Combining these approaches we reach savings of 52% in yearly energy consumption compared to the reference building.
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Monthly energy consumption per end-use: Left Original design and right Improved design.
Finally, the software used permits the evaluation of photovoltaic system generation. This guided the change of the first floor roof angle center location to increase the south-oriented area in order to accommodate more solar panels. The change allows the number of solar panels to be double which was required to reach the net-zero threshold we were looking for.
The roof change also opens a larger area in the north facade which benefits the natural ventilation performance. This would be discussed in a future article.
Please share your opinion below, your participation means a lot to us.​

* OWN, Architectural Firm with focus on balance between human and nature, www.thisisown.com/.

** sDA: Spatial Daylight Autonomy, measure defined in standard IES LM-83-2012.
*** ASE: Annual Sunlight Exposure, measure defined in standard IES LM-83-2012.
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From Business Values to Added Value – Tulum Real Estate Future

3/14/2019

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​Tulum, Quintana Roo in Mexico is one of the most prized location for luxury and eco-friendly tourism. The demand and ROI for this city and the whole Riviera Maya region will keep growing and for real estate company to continue having success in the area the approach must change. ​Leader company of the industry (Los Amigos Tulum, GMB), business associations (COPARMEX Riviera Maya and ADIRM) and government institutions (General direction for Sustainable Tourism and Tulum City Hall) are already taking actions to push best practices among all players of the real estate industry. The key concept for all these people is sustainability, making our best to affect as less as possible the environment in the construction and operation of every real estate development.
For investors be sustainable means added cost which may not be possible to profit of it especially if the competition is not pursuing the eco-friendly path. However, a sustainable development sells better, faster, at a higher price, and is cheaper to operate. This does not consist only on installing solar panels; a sustainable building take advantage of natural light, has efficient material to reduce the need for cooling/heating the indoors, are equipped with water savings fixtures, and even recuperate gray water for toilets and landscape irrigation.
20% Premium for LEED-Certified Condos
To maximize the return of investment (ROI) for a sustainable development they must obtain recognition in the form of a certification. LEED (Leadership in Energy and Environmental Design) certification is one way to prove that a project is sustainable in all its aspects and is for any type of construction. Such certification is proven to reduce operation cost of at least 25% and people are willing to pay 20% more for LEED-certified condos. It has become a lot more than a fashion and is a growing must industry. 
​There is not LEED certified building in Tulum and few in the state (ADO Terminal Chetumal and CityExpress/Suites Playa del Carmen). Choosing to pursue a certification in all their project is for leaders who aims for recognition of their practices on a global level. Tulum is an eco-friendly destination which could grow bigger while staying green if the actors of the real estate industry incorporate LEED certification as the standard for the region.
Please share your opinion below, your participation means a lot to us.
​

Recommended additional content:
​LEED Luxury home in Silicon Valley
World green building trends in technology 
World green building trend in wellness
References:
  1. Tulum Will be the First Fully Sustainable Tourism Zone in Mexico (ZDTS)
  2. 20% Premium for LEED Luxury Condos 
  3. ​Fortune 200 Companies trust LEED

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  • Home
  • Services
    • Green Building Certification
    • Building Energy Modeling >
      • Energy Star Multifamily NC
    • Computational Fluid Dynamics (CFD)
    • Net-Zero Energy in 3 Steps
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      • Austin
      • Boston
      • Denver
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      • Minneapolis
      • New York City
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  • LEED Certification
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