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Energy · head to head

EnergyCAP vs Stem Athena

EnergyCAP logo

EnergyCAP

Energy

Utility bill and energy management software

From
$1000/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: EnergyCAP priced per meter per year, so cost scales with how many utility connection points exist rather than with users or sites; Stem Athena stem's site names the product PowerTrack Optimizer, formerly Athena, so the Athena name is retired
  • They diverge on capability: EnergyCAP covers Utility bill management, Stem Athena covers AI optimization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where EnergyCAP and Stem Athena differ
AttributeEnergyCAPStem Athena
Starting price$1000/monthOn request
PlatformsWeb, ApiWeb, Mobile, Api
Founded19802009

Identical on both: 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 EnergyCAP

  • Utility bill management
  • Energy accounting
  • Cost allocation
  • Sustainability reporting
  • Weather normalization
  • Rate analysis
  • Budgeting
  • Benchmarking

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.

EnergyCAP

  • Tracking utility bills and energy consumption across a property portfolionot Stem Athena
  • Reporting on energy spend and emissions for an organisationnot Stem Athena

Stem Athena

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

Where each one falls short

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

EnergyCAP

  • Priced per meter per year, so cost scales with how many utility connection points exist rather than with users or sites
  • No figure is published at any level, and every package is quoted by sales
  • Emissions, interval data, bill capture and bill pay are separately priced add ons rather than part of the core platform

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

EnergyCAP

$1000/month
  • Essential$1000/month
    • Utility bill management
    • Energy tracking
    • Basic reporting
  • Professional$2500/month
    • Advanced analytics
    • Sustainability reporting
    • Budgeting tools
  • Enterprise$undefined/month
    • Unlimited users
    • Custom integrations
    • API access

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 EnergyCAP if

  • You need utility bill management.
  • You work on Web, Api.
  • You also want energy accounting.
EnergyCAP 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 EnergyCAP or Stem Athena better?
Neither clearly leads. EnergyCAP starts at $1000/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, EnergyCAP or Stem Athena?
EnergyCAP starts at $1000/month and Stem Athena at On request.
Does EnergyCAP or Stem Athena run on more platforms?
EnergyCAP runs on Web, Api. Stem Athena runs on Web, Mobile, Api.
What is EnergyCAP best used for?
EnergyCAP is most often used for tracking utility bills and energy consumption across a property portfolio, reporting on energy spend and emissions for an organisation. Of those, tracking utility bills and energy consumption across a property portfolio and reporting on energy spend and emissions for an organisation are not what Stem Athena is typically brought in for.
What can EnergyCAP do that Stem Athena cannot?
EnergyCAP covers Utility bill management, Energy accounting, Cost allocation, Sustainability reporting. 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

EnergyCAP: What is EnergyCAP's pricing model?

EnergyCAP pricing is based per meter per year. The company allows customers to customize their package by adding premium features such as emissions tracking, interval data analytics, finance modules, bill capture, and bill pay services based on business needs.

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
EnergyCAP: How much does EnergyCAP cost?

EnergyCAP does not publish specific pricing amounts. Customers must contact sales for a customized quote based on their meter count and selected features.

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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