Softwr

Energy · head to head

OpenLink Endur vs Stem Athena

OpenLink Endur logo

OpenLink Endur

Energy

Enterprise trading and risk management

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: OpenLink Endur no pricing published on vendor website; enterprise product requires direct contact with ION Group sales; Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: OpenLink Endur covers Deal capture, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OpenLink Endur and Stem Athena actually diverge.

Attributes where OpenLink Endur and Stem Athena differ
AttributeOpenLink EndurStem Athena
Pricing modelquotesubscription
PlatformsDesktop, Web, ApiWeb, Mobile, Api
Founded19992009

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 OpenLink Endur

  • Deal capture
  • Position management
  • Risk analytics
  • Credit management
  • Logistics
  • Settlement
  • Accounting integration
  • Regulatory compliance

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
  • ISO27001
  • Data encryption
  • Cloud deployment

What people use each for

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

OpenLink Endur

  • Energy tradingnot Stem Athena
  • Risk managementnot Stem Athena
  • Commodity logisticsnot Stem Athena
  • Regulatory compliancenot Stem Athena
  • Settlementnot Stem Athena

Stem Athena

  • Energy asset optimization and managementnot OpenLink Endur
  • Renewable energy integrationnot OpenLink Endur
  • Energy storage managementnot OpenLink Endur
  • Grid operations optimizationnot OpenLink Endur

Where each one falls short

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

OpenLink Endur

  • No pricing published on vendor website; enterprise product requires direct contact with ION Group sales

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

OpenLink Endur

On request
  • Trading$undefined/custom
    • Deal capture
    • Position management
    • P&L analytics
  • Risk$undefined/custom
    • VaR and PaR
    • Credit risk
    • Limit monitoring
  • Enterprise$undefined/custom
    • Full ETRM suite
    • Multi-commodity
    • Global support

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 OpenLink Endur if

  • You need deal capture.
  • You work on Desktop, Web, Api.
  • You also want position management.
OpenLink Endur 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 OpenLink Endur or Stem Athena better?
Neither clearly leads. OpenLink Endur 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, OpenLink Endur or Stem Athena?
OpenLink Endur starts at On request and Stem Athena at On request.
Does OpenLink Endur or Stem Athena run on more platforms?
OpenLink Endur runs on Desktop, Web, Api. Stem Athena runs on Web, Mobile, Api.
What is OpenLink Endur best used for?
OpenLink Endur is most often used for energy trading, risk management, commodity logistics, regulatory compliance. Of those, energy trading and risk management are not what Stem Athena is typically brought in for.
What can OpenLink Endur do that Stem Athena cannot?
OpenLink Endur covers Deal capture, Position management, Risk analytics, Credit management. Stem Athena covers AI optimization, Energy storage management, Demand charge reduction, Grid services. Both handle SOC2, ISO27001, Data encryption, Cloud deployment.

Answered from the vendors’ own pages

OpenLink Endur: How much does OpenLink Endur cost?

OpenLink Endur does not publish pricing on the ION Group website. This is an enterprise product requiring direct contact with ION Group sales for custom pricing.

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
OpenLink Endur: How can I get pricing for OpenLink Endur?

Contact ION Group directly through their contact forms, request a demo, or work with their sales team to receive a custom quote for OpenLink Endur.

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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