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Energy · head to head

Johnson Controls Metasys vs Stem Athena

Johnson Controls Metasys logo

Johnson Controls Metasys

Energy

Building management and control system platform

From
On request
Rated
-
Full reviewWebsite
Stem Athena logo

Stem Athena

Energy

AI-driven clean energy optimization

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Johnson Controls Metasys a Metasys server supports 1,300 devices and 65,000 objects, so larger estates require additional servers; Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: Johnson Controls Metasys covers HVAC control, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Johnson Controls Metasys and Stem Athena actually diverge.

Attributes where Johnson Controls Metasys and Stem Athena differ
AttributeJohnson Controls MetasysStem Athena
Pricing modelquotesubscription
PlatformsWeb, MobileWeb, Mobile, Api
Founded18852009

Identical on both: starting price (On request), free tier (No), user rating (Not yet rated), category (Energy).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Johnson Controls Metasys

  • HVAC control
  • Building automation
  • Energy management
  • Security integration
  • Analytics dashboard
  • SSL encryption
  • On-premise deployment
  • Web support

Only in Stem Athena

  • AI optimization
  • Energy storage management
  • Demand charge reduction
  • Grid services
  • Solar integration
  • Weather forecasting
  • Performance analytics
  • Remote monitoring

Both cover

  • SOC2
  • Cloud deployment

What people use each for

The jobs each tool is most often brought in to do.

Johnson Controls Metasys

  • Building automation for offices, data centres, hospitals and universitiesnot Stem Athena
  • Managing multi site campuses from one building management systemnot Stem Athena
  • Meeting compliance and reporting requirements for regulated facilitiesnot Stem Athena

Stem Athena

  • Energy asset optimization and managementnot Johnson Controls Metasys
  • Renewable energy integrationnot Johnson Controls Metasys
  • Energy storage managementnot Johnson Controls Metasys
  • Grid operations optimizationnot Johnson Controls Metasys

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Johnson Controls Metasys

  • A Metasys server supports 1,300 devices and 65,000 objects, so larger estates require additional servers
  • No hardware requirement, licensing model, subscription term or price is published on the product page; the routes offered are a demo booking and a contact form

Stem Athena

  • Stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • No price, subscription fee or contract term is published anywhere on the site
  • The optimizer is one component of the wider PowerTrack suite alongside separate EMS, SCADA, Power Plant Controller and Logger products rather than a standalone licence
  • Design, procurement, commissioning and operation are sold as managed services separate from the software

Pricing, plan by plan

Johnson Controls Metasys

On request

No published plan breakdown. See the Johnson Controls Metasys review.

Stem Athena

On request
  • Commercial$undefined/custom
    • Energy storage optimization
    • Demand charge management
    • Rate optimization
  • Utility$undefined/custom
    • Grid services
    • VPP management
    • Frequency regulation
  • Enterprise$undefined/custom
    • Fleet management
    • Portfolio optimization
    • Custom integrations

Which should you pick?

Choose Johnson Controls Metasys if

  • You need hvac control.
  • You work on Web, Mobile.
  • You also want building automation.
Johnson Controls Metasys review

Choose Stem Athena if

  • You need ai optimization.
  • You work on Web, Mobile, Api.
  • You also want energy storage management.
Stem Athena review

Questions people ask

Is Johnson Controls Metasys or Stem Athena better?
Neither clearly leads. Johnson Controls Metasys starts at On request and Stem Athena at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Johnson Controls Metasys or Stem Athena?
Johnson Controls Metasys starts at On request and Stem Athena at On request.
Does Johnson Controls Metasys or Stem Athena run on more platforms?
Johnson Controls Metasys runs on Web, Mobile. Stem Athena runs on Web, Mobile, Api.
What is Johnson Controls Metasys best used for?
Johnson Controls Metasys is most often used for building automation for offices, data centres, hospitals and universities, managing multi site campuses from one building management system, meeting compliance and reporting requirements for regulated facilities. Of those, building automation for offices, data centres, hospitals and universities and managing multi site campuses from one building management system are not what Stem Athena is typically brought in for.
What can Johnson Controls Metasys do that Stem Athena cannot?
Johnson Controls Metasys covers HVAC control, Building automation, Energy management, Security integration. Stem Athena covers AI optimization, Energy storage management, Demand charge reduction, Grid services. Both handle SOC2, Cloud deployment.

Answered from the vendors’ own pages

Johnson Controls Metasys: How much does Johnson Controls Metasys cost?

Johnson Controls Metasys pricing is not published online. Contact Johnson Controls directly for enterprise building automation system pricing and licensing.

Source
Stem Athena: How much does Stem Athena cost?

Stem does not publish pricing for Athena on its website. The company appears to use a custom enterprise pricing model. Interested customers must contact Stem directly through their website to inquire about pricing and availability.

Source
Johnson Controls Metasys: What licensing models does Metasys offer?

Specific Metasys licensing models and pricing are available through Johnson Controls sales team. Contact Johnson Controls for custom quotes based on building management requirements.

Source
Stem Athena: Does Stem offer a free trial?

The Stem website does not mention a free trial or demo option for Athena. Customers are directed to contact Stem's sales team for information about trial access or pricing.

Source
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