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Energy · head to head

OATI webSmartEnergy vs Stem Athena

OATI webSmartEnergy logo

OATI webSmartEnergy

Energy

Comprehensive utility billing and customer engagement

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: OATI webSmartEnergy oATI publishes no price for webSmartEnergy anywhere on its site; even the product overview is gated behind a brochure request form, with further detail requiring direct email contact to [email protected] rather than any published rate (archived brochure page, 25 June 2024); Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: OATI webSmartEnergy covers Customer information system, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OATI webSmartEnergy and Stem Athena actually diverge.

Attributes where OATI webSmartEnergy and Stem Athena differ
AttributeOATI webSmartEnergyStem Athena
Founded19952009

Identical on both: starting price (On request), pricing model (subscription), free tier (No), platforms (Web, Mobile, Api), 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 OATI webSmartEnergy

  • Customer information system
  • Utility billing
  • Payment processing
  • Smart meter integration
  • Rate management
  • Service order management
  • Customer portal
  • Demand response

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
  • Data encryption
  • Cloud deployment

What people use each for

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

OATI webSmartEnergy

  • Utility billingnot Stem Athena
  • Customer managementnot Stem Athena
  • Smart meter datanot Stem Athena
  • Rate analysisnot Stem Athena
  • Demand response programsnot Stem Athena

Stem Athena

  • Energy asset optimization and managementnot OATI webSmartEnergy
  • Renewable energy integrationnot OATI webSmartEnergy
  • Energy storage managementnot OATI webSmartEnergy
  • Grid operations optimizationnot OATI webSmartEnergy

Where each one falls short

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

OATI webSmartEnergy

  • OATI publishes no price for webSmartEnergy anywhere on its site; even the product overview is gated behind a brochure request form, with further detail requiring direct email contact to [email protected] rather than any published rate (archived brochure page, 25 June 2024)

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

OATI webSmartEnergy

On request
  • CIS Basic$undefined/custom
    • Customer management
    • Billing engine
    • Payment processing
  • CIS Advanced$undefined/custom
    • Advanced rate structures
    • Demand response
    • Prepaid metering
  • Enterprise$undefined/custom
    • MDM integration
    • Analytics suite
    • Multi-commodity

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 OATI webSmartEnergy if

  • You need customer information system.
  • You work on Web, Mobile, Api.
  • You also want utility billing.
OATI webSmartEnergy 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 OATI webSmartEnergy or Stem Athena better?
Neither clearly leads. OATI webSmartEnergy 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, OATI webSmartEnergy or Stem Athena?
OATI webSmartEnergy starts at On request and Stem Athena at On request.
Does OATI webSmartEnergy or Stem Athena run on more platforms?
Both run on Web, Mobile, Api, so platform support will not decide this one for you.
What is OATI webSmartEnergy best used for?
OATI webSmartEnergy is most often used for utility billing, customer management, smart meter data, rate analysis. Of those, utility billing and customer management are not what Stem Athena is typically brought in for.
What can OATI webSmartEnergy do that Stem Athena cannot?
OATI webSmartEnergy covers Customer information system, Utility billing, Payment processing, Smart meter integration. Stem Athena covers AI optimization, Energy storage management, Demand charge reduction, Grid services. Both handle SOC2, Data encryption, Cloud deployment.

Answered from the vendors’ own pages

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
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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