Design option studies
HVAC systems, envelope, glazing and controls compared side by side, with results in energy use, operating cost and carbon.
Energy modeling and building physics
Energy models that answer the design question.
Which HVAC system, which glazing, which retrofit first? We build whole-building energy models that compare the options in energy, cost and carbon, early enough to change the design. The same models carry your LEED energy credits.
Energy and building physics services
Models built for a decision, not only for a submission.
LEED energy credits
ASHRAE 90.1 Appendix G models for LEED Optimize Energy Performance, documented for the LEED review.
LEED consultingEnergy code compliance
When the prescriptive path does not fit the design, a performance-path model shows the building complies.
Energy code simulationExisting buildings and LL97
Models calibrated against utility data, with retrofit measures ranked by emissions, cost and LL97 exposure.
NYC Local Law 97Energy audits
ASHRAE Level 1 and Level 2 energy audits, with our partner PE where a seal is required.
Daylight analysis
Daylight and glare simulation for design decisions and the LEED daylight credit.
Overheating and thermal comfort
Thermal comfort and overheating studies, including CIBSE TM52 and TM59, and CFD for ventilation and air distribution.
How a modeling study runs
Short loops with the design team, so the results arrive while they can still change the design.
Kick-off
The question and the inputs
What decision the model must support, and the drawings, schedules and utility data we need.
Baseline
Model built
Geometry, envelope, systems and schedules, with the assumptions written down.
Options
Scenarios run
Each option compared on energy, cost and carbon, with the drivers explained.
Decision
Report and meeting
A short report and a working session with the design team.
Later stages
The model stays live
Updated as the design develops and reused for LEED and code where the rules allow.
Energy modeling projects
A selection of projects where our energy models supported design and certification.
Lakhta Center
St. Petersburg
LEED CS Platinum and Gold
LEED consulting and energy modeling
Generation Office Park
Warsaw
LEED CS Platinum
Energy modeling
Lobos Office
Krakow
LEED CS Platinum
Energy modeling
Istanbul Finance Center
Istanbul
LEED CS Gold
LEED consulting and energy modeling
Saudi Central Bank
Riyadh
LEED CI Gold
LEED consulting and energy modeling
Kohler Woodlake Market
Kohler, Wisconsin
LEED ID+C Retail Gold
Commissioning, LEED consulting and energy modeling
From model to building
The model says what the building should do. Commissioning proves it does.
We model the systems at design stage and, when we are the CxA, test them before turnover against the same intent. If we also model or consult on a project where we are the CxA, we agree the arrangement with the owner at the start, so the commissioning stays independent of the design work.
Energy modeling questions
When should modeling start?
At concept or schematic design for option studies, when changing the system or the facade still costs little. LEED and code models follow in design development.
Can one model serve LEED and the energy code?
Often, when the LEED version and the code path use compatible editions of ASHRAE 90.1. We tell you at the start whether one model can do both.
What do you need from us?
Drawings, the MEP narrative or equipment schedules, and for existing buildings at least a year of utility bills.
Do you model existing buildings?
Yes. We calibrate the model against utility data before we test retrofit measures, so the savings start from what the building really uses.
Do you work outside New York?
Yes, anywhere in the US. Modeling is done in our office; we visit site when an existing building needs a survey.
Ask for a modeling proposal
Tell us the decision you need to make. We reply within two business days with scope, schedule and a fixed fee.
Prefer to talk? +1 (646) 296-8091 or [email protected]
LEED is a trademark of the U.S. Green Building Council. ASHRAE is a registered trademark of ASHRAE.