Compliance with LEED

Energy modeling is an essential and worldwide recommended analysis for a new sustainable building or a modification to be one.

Take informed decisions with the backup of Energy Modeling. We advise to start in the early stages of design with the purpose of finding solutions or improvements for the project. Makes possible energy savings and efficient building performance, and therefore access to governmental Incentives as the one offered by Austin Energy.

Also, it is an obligatory prerequisite to obtain  LEED Certification issued by the US Green Building Council. With a combination of passive design strategies, automatización and renewable energy generation, we can inform of how to take the best cost effective decision. We will ensure to decrease the resource and energy use of the building and the enhancement of health conditions for users.

Our experience in energy modeling goes to nearly 100 projects mainly for the ones pursuing the LEED certification.

The preferred software used for our models is eQUEST® 3.65, which complies with the section G2.2 of the ANSI/ASHRAE/IESNA 90.1 standard, and allows us a quick analysis between options provided for the projects we are involved. Other software used are Open Studio® with Energy Plus®.

We use Rhino 5 and grasshopper for:

  • Weather analysis through Ladybug

  • Daylight simulations through Honeybee and Radiance

  • Energy simulations through Honeybee and EnergyPlus

  • Wind Simulations through Butterfly and OpenFoam


Passive Design

Discover areas of opportunity through a Sustainability diagnosis. We will analyze the performance of the building and will identify the potential heatlh, energy or financial enhancements that could be made by our consulting services. We will also give you an example of the multiplier effect that can be achieved by our social program.

Improve building performance by Solar Passive Design. We will propose strategies to enhance performance of the envelope design, increasing natural light harvesting, glare prevention and reduce or eliminate the need for mechanical cooling and heating systems. Solar, thermal, airflow and daylighting studies are carried out to assess whole buildings and selected spaces. For this, we use reliable climatic data and deeply analyze occupancy schedules, usage of appliances and other operational characteristics to ensure that the building will cope with daily and seasonal variations. We are specialized in informing complex architectonical solutions and devices of design teams for commercial and institutional buildings with 75+ LEED registered projects, among which 30 are high-rise buildings and 20 of them have more than 200,000 sqf, however, we have also participated in small renewals and developments achieving LEED Platinum and other environmental certifications.

Buildings play a major role in the generation of greenhouse and ozone depleting gases. Knowledge and understanding of the physical principles associated with building performance are crucial for the development of effective strategies aimed to mitigate global warming and climate change globally. Powerful computational tools are now available to accurately simulate the overall performance of buildings and urban spaces from both the energy consumption and occupant thermal and visual comfort perspectives. Eosis proactively and dynamically analyses possible strategies for improvement through energy simulation tools to inform design decisions.

Passive design strategies enable the creation of good environments and at the same time eliminate the need for mechanical cooling and heating systems. They can be implemented in most climate zones provided the understanding of the specific needs and possible interactions between the building and its context. Solar, thermal, airflow and daylighting studies are carried out to assess whole buildings and selected spaces. For this, we use reliable climatic data and deeply analyse occupancy schedules, usage of appliances and other operational characteristics to ensure that the building will cope with daily and seasonal variations.

Envelope Assessment

The envelope of a building is the main barrier between indoor and outdoor spaces. Heat exchange through this spaces drives thermal comfort conditions. Such exchange is analyzed using thermal simulation software both to define individual transmittance values (U-values) of construction assemblies (walls and windows) and to analyze the thermal interaction between each other.

Daylight Strategies

Daylight access must be ensured in all occupied spaces of a building. Health and productivity of building occupants  can be drastically improved if adequate daylighting conditions are provided. We carefully analyze the relationships between solar radiation and daylight to reach a balance point where we provide sufficient daylight while successfully protecting the building from undesired heat gains and glare.

Solar Radiation Studies

Solar radiation accounts as the largest heat gain for most buildings in our climate. Hence the need to protect buildings from it to prevent undesired gains that could affect thermal and visual comfort conditions. Understanding of solar movement relative to our buildings is fundamental to the design of suitable solutions. Solar radiation access studies can be carried out on both, facades and interior floor plates of  buildings.

Passive Ventilation

Fluid dynamics in buildings and open spaces are very complex to understand without the help of CFD simulation. Successful passive ventilation strategies depend on a number of physical, thermal and pressure conditions than vary every second. We understand the core principles of this. We propose innovative solutions to maintain and improve occupants wellbeing.

Parametric Envelope Optimization

It consists in developing a schematic model that diagnoses  energetic performance and building comfort, by analyzing energy optimization opportunities on the building’s envelope, mainly in its facade (prior to being completely defined).


Building comfort is the result of the different strategies utilized on the project. Different combinations obtain diverse results aiming for the best strategic combination.


Conceptual stage is the one with the biggest impact opportunity and the lowest cost. This methodology allows design teams to make informed decisions to detect opportunities before establishing a specific volumetric enveloping design.


Regional and urban climate is analyzed precisely trough specialized software, in order to pick the right volumetric and enveloping strategy for the project.


Solar path understanding is fundamental for diverse climatic strategies such as solar chimneys, radiation blockers, atrios and more.


Shadowing analysis offers design team a vision on how entournage impacts the project or in case of greater heights, how the project impacts its surrounding environment.