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Energy · head to head

Clean Power Research PowerClerk vs Stem Athena

Clean Power Research PowerClerk logo

Clean Power Research PowerClerk

Energy

Interconnection and DER program 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: Clean Power Research PowerClerk no pricing is published for PowerClerk; the site offers only Request a Demo and Get Demo with no published rate, minimum or cost driver; Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: Clean Power Research PowerClerk covers Interconnection workflow, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Clean Power Research PowerClerk and Stem Athena actually diverge.

Attributes where Clean Power Research PowerClerk and Stem Athena differ
AttributeClean Power Research PowerClerkStem Athena
PlatformsWeb, ApiWeb, Mobile, Api
Founded19982009

Identical on both: starting price (On request), pricing model (subscription), 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 Clean Power Research PowerClerk

  • Interconnection workflow
  • Application tracking
  • Technical screening
  • Queue management
  • Customer portal
  • Document management
  • Reporting
  • Program analytics

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.

Clean Power Research PowerClerk

  • Automating distributed energy resource interconnection applications for utilitiesnot Stem Athena
  • No-code workflow automation for utility customer programmes and rebatesnot Stem Athena
  • Managing large load and generator connection requestsnot Stem Athena

Stem Athena

  • Energy asset optimization and managementnot Clean Power Research PowerClerk
  • Renewable energy integrationnot Clean Power Research PowerClerk
  • Energy storage managementnot Clean Power Research PowerClerk
  • Grid operations optimizationnot Clean Power Research PowerClerk

Where each one falls short

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

Clean Power Research PowerClerk

  • No pricing is published for PowerClerk; the site offers only Request a Demo and Get Demo with no published rate, minimum or cost driver
  • PowerClerk is one of several separately sold Clean Power Research utility products alongside FleetView, WattPlan and SolarAnywhere
  • The product is marketed to utilities and energy agencies in North and Central America rather than being generally available

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

Clean Power Research PowerClerk

On request
  • Interconnection$undefined/custom
    • Application management
    • Queue management
    • Technical review
  • Incentive Programs$undefined/custom
    • Program management
    • Budget tracking
    • Payment processing
  • Enterprise$undefined/custom
    • Full platform access
    • Custom workflows
    • API 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 Clean Power Research PowerClerk if

  • You need interconnection workflow.
  • You work on Web, Api.
  • You also want application tracking.
Clean Power Research PowerClerk 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 Clean Power Research PowerClerk or Stem Athena better?
Neither clearly leads. Clean Power Research PowerClerk 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, Clean Power Research PowerClerk or Stem Athena?
Clean Power Research PowerClerk starts at On request and Stem Athena at On request.
Does Clean Power Research PowerClerk or Stem Athena run on more platforms?
Clean Power Research PowerClerk runs on Web, Api. Stem Athena runs on Web, Mobile, Api.
What is Clean Power Research PowerClerk best used for?
Clean Power Research PowerClerk is most often used for automating distributed energy resource interconnection applications for utilities, no-code workflow automation for utility customer programmes and rebates, managing large load and generator connection requests. Of those, automating distributed energy resource interconnection applications for utilities and no-code workflow automation for utility customer programmes and rebates are not what Stem Athena is typically brought in for.
What can Clean Power Research PowerClerk do that Stem Athena cannot?
Clean Power Research PowerClerk covers Interconnection workflow, Application tracking, Technical screening, Queue management. 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

Clean Power Research PowerClerk: How do I purchase PowerClerk?

PowerClerk uses a sales-led model. You can book a meeting with their Utility and Energy Agency Sales team online, or chat with sales during business hours (9-5 PT). No pricing is published on their website.

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
Clean Power Research PowerClerk: Does PowerClerk offer a trial or free access?

The product pages do not mention a free trial or trial period. PowerClerk is positioned as an enterprise solution for utilities and energy agencies, suggesting custom pricing based on organizational needs.

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
Clean Power Research PowerClerk: What support is available for PowerClerk customers?

PowerClerk includes technical support through the Clean Power Research support center at support.cleanpower.com. The website mentions support for new customers, renewals, and license changes.

Source
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