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Energy · head to head

Cognite Data Fusion vs Wattwatchers EMS

Cognite Data Fusion logo

Cognite Data Fusion

Energy

Industrial data platform that contextualises OT, IT and engineering data into an asset-centric knowledge graph

From
On request
Rated
-
Full reviewWebsite
Wattwatchers EMS logo

Wattwatchers EMS

Energy

Smart building energy management system

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cognite Data Fusion the platform is only as good as the contextualisation work, and that mapping effort is a consulting project that regularly costs more than the first-year subscription.; Wattwatchers EMS requires hardware installation at each monitoring point, increasing total cost of ownership
  • They diverge on capability: Cognite Data Fusion covers Asset-centric data model, Wattwatchers EMS covers Real-time monitoring.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Cognite Data Fusion and Wattwatchers EMS actually diverge.

Attributes where Cognite Data Fusion and Wattwatchers EMS differ
AttributeCognite Data FusionWattwatchers EMS
Pricing modelquoteUnknown
PlatformsWeb, CloudWeb, iOS, Android, Cloud
FoundedUnknown2007

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 Cognite Data Fusion

  • Asset-centric data model
  • Entity matching
  • P&ID parsing
  • 3D contextualisation
  • Cognite Atlas AI
  • Data workflows
  • Open SDKs
  • Extractors

Only in Wattwatchers EMS

  • Real-time monitoring
  • Energy analytics
  • Smart recommendations
  • Alert system
  • Mobile app
  • Home Assistant
  • Google Home
  • SSL encryption

What people use each for

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

Cognite Data Fusion

  • An operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one searchnot Wattwatchers EMS
  • A company standardising asset data across sites so an analytics team can build once and deploy to many plantsnot Wattwatchers EMS
  • An upstream operator building a production-optimisation model that needs sensor data joined to equipment metadatanot Wattwatchers EMS
  • A team replacing a stalled internal data-lake project where nobody could reconstruct what the tag names meantnot Wattwatchers EMS

Wattwatchers EMS

  • Energy optimizationnot Cognite Data Fusion
  • Cost reductionnot Cognite Data Fusion

Where each one falls short

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

Cognite Data Fusion

  • The platform is only as good as the contextualisation work, and that mapping effort is a consulting project that regularly costs more than the first-year subscription.
  • Pricing is consumption-based and unpublished, so costs move with data volume and usage patterns you cannot forecast well until a year in.
  • It does not replace your historian, your ERP or your maintenance system, so Cognite is an additional recurring cost layered on systems you still pay for.
  • The reference base and data model lean heavily towards Norwegian and wider oil, gas and process industries; discrete manufacturing fit is weaker and the local partner network thinner outside energy.
  • Getting value out requires in-house Python and data engineering skill; organisations without a data team end up dependent on Cognite professional services for every new use case.

Wattwatchers EMS

  • Requires hardware installation at each monitoring point, increasing total cost of ownership
  • Built for small to medium portfolios; scaling to large portfolios may present usability challenges
  • Limited to energy monitoring; not a comprehensive building management system

Pricing, plan by plan

Cognite Data Fusion

On request
  • Cognite Data Fusion$undefined/year
    • Consumption-based pricing on data volume, compute and users
    • Available through cloud marketplaces with private offers
    • Contextualisation and onboarding quoted as a separate engagement

Wattwatchers EMS

On request

No published plan breakdown. See the Wattwatchers EMS review.

Which should you pick?

Choose Cognite Data Fusion if

  • You need asset-centric data model.
  • You work on Web, Cloud.
  • You also want entity matching.
Cognite Data Fusion review

Choose Wattwatchers EMS if

  • You need real-time monitoring.
  • You work on Web, iOS, Android, Cloud.
  • You also want energy analytics.
Wattwatchers EMS review

Questions people ask

Is Cognite Data Fusion or Wattwatchers EMS better?
Neither clearly leads. Cognite Data Fusion starts at On request and Wattwatchers EMS at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cognite Data Fusion or Wattwatchers EMS?
Cognite Data Fusion starts at On request and Wattwatchers EMS at On request.
Does Cognite Data Fusion or Wattwatchers EMS run on more platforms?
Cognite Data Fusion runs on Web, Cloud. Wattwatchers EMS runs on Web, iOS, Android, Cloud.
What is Cognite Data Fusion best used for?
Cognite Data Fusion is most often used for an operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one search, a company standardising asset data across sites so an analytics team can build once and deploy to many plants, an upstream operator building a production-optimisation model that needs sensor data joined to equipment metadata, a team replacing a stalled internal data-lake project where nobody could reconstruct what the tag names meant. Of those, an operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one search and a company standardising asset data across sites so an analytics team can build once and deploy to many plants are not what Wattwatchers EMS is typically brought in for.
What can Cognite Data Fusion do that Wattwatchers EMS cannot?
Cognite Data Fusion covers Asset-centric data model, Entity matching, P&ID parsing, 3D contextualisation. Wattwatchers EMS covers Real-time monitoring, Energy analytics, Smart recommendations, Alert system.

Answered from the vendors’ own pages

Cognite Data Fusion: Is Cognite a historian?

No. It reads from historians such as PI System and adds context. You still need the historian underneath.

Wattwatchers EMS: What data does Wattwatchers monitor?

Wattwatchers measures consumption at the device or circuit level in real-time, identifies equipment inefficiencies, and streams data through cloud dashboards for detailed energy consumption pattern analysis.

Source
Cognite Data Fusion: How is it priced?

Consumption-based on data, compute and users, quoted per customer. Nothing is published.

Wattwatchers EMS: What web-based tools does Wattwatchers provide?

Wattwatchers provides Fleet Management for fleet overview and device health, an Onboarding tool for smartphone-based device configuration, and a Dashboard for customers to view sites and data.

Source
Cognite Data Fusion: How long does a deployment take?

First useful graph in a few months is realistic; full plant contextualisation across a site is typically a year or more.

Wattwatchers EMS: What is the mydata.energy app?

mydata.energy is Wattwatchers' mobile application available on iPhone and Android that provides real-time energy management and monitoring for homes and small businesses.

Source
Cognite Data Fusion: Can we do the contextualisation ourselves?

Technically yes, the SDKs and matching tools are open, but most customers use Cognite or a partner for the first site.

Wattwatchers EMS: How does ADEPT help with energy management?

ADEPT is Wattwatchers' agile development platform for distributed energy that enables fleet analytics, real-time performance analysis, and zero-code prototyping of custom analytics rules.

Source
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