OpenStudio

Engineering & science

Free open-source softwareEditorial overview
A CLOSER LOOK

What is OpenStudio?

OpenStudio provides tools and an SDK for whole-building energy modeling around EnergyPlus and related analysis workflows. It helps users organize models and automate modifications, supporting repeatable comparisons while leaving detailed simulation assumptions and associated tool choices under user control.

Building model SDK

EnergyPlus integration

Reusable measures

Workflow automation

Is it a good fit?

Best suited to

Teams automating building energy modeling workflows

Before you choose

Requires understanding of building simulation. Related applications and plugins have separate requirements.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The Open source software is available without a license subscription and includes Building model SDK and EnergyPlus integration. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

No software subscription; hardware, support and any separately licensed extras are not included.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Supports repeatable model modifications

Connects building-modeling tools and simulation

What to keep in mind

Requires understanding of building simulation

Related applications and plugins have separate requirements

How to use it well

Start with a simple model and a known simulation workflow before applying multiple automated measures. Review each measure's inputs and resulting model changes, then compare warnings and outputs after execution. Record the OpenStudio and EnergyPlus versions together so later runs can be interpreted when toolchain updates alter behavior or defaults.

This is best suited to teams automating building energy modeling workflows. Before committing a larger project, account for these trade-offs: requires understanding of building simulation; related applications and plugins have separate requirements.

A few things you might be wondering.

Is OpenStudio free?

The Open source software is available without a license subscription and includes Building model SDK and EnergyPlus integration. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

Does OpenStudio use EnergyPlus?

Yes. EnergyPlus is central to its building simulation workflows.

Are automated measures a substitute for reviewing a model?

No. Inspect the changes and validate the resulting simulation assumptions.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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