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Maritime · head to head

Shone vs Stem Athena

S

Shone

Maritime

AI-powered autonomous shipping technology

From
$3000/month
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: Shone shone Automation was acquired by Bedrock Ocean Exploration in April 2022 and the product is no longer sold under the Shone name; Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: Shone covers Autonomous navigation, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Shone and Stem Athena actually diverge.

Attributes where Shone and Stem Athena differ
AttributeShoneStem Athena
Starting price$3000/monthOn request
PlatformsMaritime vesselsWeb, Mobile, Api
CategoryMaritimeEnergy
Founded20172009

Identical on both: pricing model (subscription), free tier (No), user rating (Not yet rated).

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 Shone

  • Autonomous navigation
  • Collision avoidance
  • Sensor fusion
  • Decision support
  • Bridge systems
  • ECDIS
  • Radar
  • AIS

Only in Stem Athena

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

What people use each for

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

Shone

No use cases recorded yet. See the Shone review.

Stem Athena

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

Where each one falls short

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

Shone

  • Shone Automation was acquired by Bedrock Ocean Exploration in April 2022 and the product is no longer sold under the Shone name
  • shone.io no longer resolves

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

Shone

$3000/month
  • Professional$8000/month
    • Autonomous navigation
    • Collision avoidance
    • Bridge integration

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 Shone if

  • You need autonomous navigation.
  • You work on Maritime vessels.
  • You also want collision avoidance.
Shone 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 Shone or Stem Athena better?
Neither clearly leads. Shone starts at $3000/month and Stem Athena at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Shone or Stem Athena?
Shone starts at $3000/month and Stem Athena at On request.
Does Shone or Stem Athena run on more platforms?
Shone runs on Maritime vessels. Stem Athena runs on Web, Mobile, Api.
What can Shone do that Stem Athena cannot?
Shone covers Autonomous navigation, Collision avoidance, Sensor fusion, Decision support. Stem Athena covers AI optimization, Energy storage management, Demand charge reduction, Grid services.

Answered from the vendors’ own pages

Shone: What does Shone's autonomous technology do?

Shone retrofits ships with autonomous technologies to improve safety, security and crew quality of life. The system provides assistance through situational awareness and course recommendations, which reduces watchkeeper fatigue and helps prevent accidents.

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
Shone: How does Shone detect surrounding vessels?

Shone's proprietary detection algorithm is based on data gathered from ship sensors including AIS, radar and GPS, with additional cameras installed on board for computer vision capabilities.

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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