• Autodesk, Inc
• ABB
• Bentley Systems
• Cisco Systems, Inc
• Emerson Electric Co
• Honeywell International Inc
• IBM Corporation
• Schneider Electric
• Integrated Environmental Solutions Limited
• EnergyPlus
• BuildSimHub
• DesignBuilder
• BEE

In my opinion this is the best option:

• EnergyPlus has its roots in both the BLAST and DOE–2 programs. BLAST (Building Loads Analysis and System Thermodynamics) and DOE–2 were both developed and released in the late 1970s and early 1980s as energy and load simulation tools. Their intended audience is a design engineer or architect that wishes to size appropriate HVAC equipment, develop retrofit studies for life cycling cost analyses, optimize energy performance, etc. Born out of concerns driven by the energy crisis of the early 1970s and recognition that building energy consumption is a major component of the American energy usage statistics, the two programs attempted to solve the same problem from two slightly different perspectives. Both programs had their merits and shortcomings, their supporters and detractors, and solid user bases both nationally and internationally. Like its parent programs, EnergyPlus is an energy analysis and thermal load simulation program. Based on a user’s description of a building from the perspective of the building’s physical make-up, associated mechanical systems, etc., EnergyPlus will calculate the heating and cooling loads necessary to maintain thermal control setpoints, conditions throughout an secondary HVAC system and coil loads, and the energy consumption of primary plant equipment as well as many other simulation details that are necessary to verify that the simulation is performing as the actual building would. Many of the simulation characteristics have been inherited from the legacy programs of BLAST and DOE–2. Below is list of some of the features of the first release of EnergyPlus. While this list is not exhaustive, it is intended to give the reader and idea of the rigor and applicability of EnergyPlus to various simulation situations.

I've the experience of using Energy+ and it was really useful in the field of heating and cooling energy comparisons. but if you need a daylight simulation try Radiance.

I agree with Debrayan Bravo Hidalgo (and Horre Toodekharman) but would like to add that EnergyPlus does not have the most intuitive user interface for beginners. A software like DesignBuilder has EnergyPlus as engine but adds a nice user-friendly interface

Hello Sir Azar,

In my opinion as a master of architecture who worked with DesighnBuilder software, it would be helpful to you, and also it's user-friendly.

Good luck!

DesignBuilder is a user-friendly interface using the EnergyPlus solver. They have different prices depending on what do you exactly need.

Please define what aspects of buildings you want to simulate. There is a lot of codes for general energy-related building performance simulation, plus a lot of specialised software for particular aspects. In general, you trade flexibility against ease of use, so it is good to know what parameters you need to control to neither choose an overly complicated method nor to go with a simplified solution that makes crude approximations exactly on what you are interested in most.

Use Revit plugged into insight 360 as one of the best tool for building simulation and modeling (BIM), it’s better than other software programs!

DesignBuilder

TAS Engineering

Both are very precise and have modeling packages besides the simulatiion interface.

I recommend the Energy plus program as one of the best programs for building simulation

Permalnaïck Fabrice

I would recommend Lumion, EnergyPlus and AutoDesk Revit. However, the choice is yours based on the necessity.