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Energy · head to head

Emerson Ovation vs OATI webOASIS

Emerson Ovation logo

Emerson Ovation

Energy

Distributed control system for power generation and water treatment plants

From
On request
Rated
-
Full reviewWebsite
OATI webOASIS logo

OATI webOASIS

Energy

Energy trading and transmission management platform

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Emerson Ovation nothing about the cost is published, and the licence is a minority of the total; engineering, I/O hardware and commissioning commonly exceed it, so a budget built from a software quote will be wrong by a large multiple.; OATI webOASIS no public pricing published; custom enterprise sales model requires direct contact
  • They diverge on capability: Emerson Ovation covers Power application libraries, OATI webOASIS covers Energy scheduling.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Emerson Ovation and OATI webOASIS actually diverge.

Attributes where Emerson Ovation and OATI webOASIS differ
AttributeEmerson OvationOATI webOASIS
PlatformsWindows, On-premiseWeb, Api
FoundedUnknown1998

Identical on both: starting price (On request), pricing model (quote), 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 Emerson Ovation

  • Power application libraries
  • Ovation SIS
  • Embedded historian
  • NERC CIP tooling
  • Virtualised controllers
  • Simulation

Only in OATI webOASIS

  • Energy scheduling
  • Transmission reservations
  • E-tagging
  • Market operations
  • Balancing authority management
  • Congestion management
  • Settlement processing
  • Real-time dispatch

What people use each for

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

Emerson Ovation

  • Replacing an end-of-life control system on a coal or gas unit during a planned outage, where the vendor must supply turbine control as well as plant controlnot OATI webOASIS
  • A municipal water authority standardising treatment plant control across several sites under one NERC-adjacent security regimenot OATI webOASIS
  • An IPP wanting the DCS and the safety instrumented system engineered in the same tool rather than integrated across two vendorsnot OATI webOASIS
  • Hydro operators needing IEC 61850 and DNP3 into a control system that also runs the balance of plantnot OATI webOASIS

OATI webOASIS

  • Energy tradingnot Emerson Ovation
  • Transmission schedulingnot Emerson Ovation
  • Market settlementsnot Emerson Ovation
  • Grid balancingnot Emerson Ovation

Where each one falls short

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

Emerson Ovation

  • Nothing about the cost is published, and the licence is a minority of the total; engineering, I/O hardware and commissioning commonly exceed it, so a budget built from a software quote will be wrong by a large multiple.
  • Ovation is power and water specific, so a group operating both power stations and chemical plants will end up running Ovation alongside DeltaV or a third-party DCS and paying for two engineering skill sets.
  • The annual support and subscription contract is effectively mandatory: without it you lose access to security patches, which for a NERC CIP regulated asset is not a decision you can defer.
  • Replacement is bounded by outage windows rather than by budget, so a decision to leave Ovation typically takes multiple years and cannot be reversed cheaply once started.
  • Third-party engineering capability is much thinner than for Rockwell or Siemens platforms, so you are largely dependent on Emerson or a small partner pool for changes, and their day rates set the cost of every future modification.

OATI webOASIS

  • No public pricing published; custom enterprise sales model requires direct contact

Pricing, plan by plan

Emerson Ovation

On request
  • Ovation Automation Platform$undefined/year
    • Priced by controller count, I/O point count and operator workstation
    • Hardware, engineering and commissioning quoted with the software
    • Annual support and subscription contract sold separately

OATI webOASIS

On request

No published plan breakdown. See the OATI webOASIS review.

Which should you pick?

Choose Emerson Ovation if

  • You need power application libraries.
  • You work on Windows, On-premise.
  • You also want ovation sis.
Emerson Ovation review

Choose OATI webOASIS if

  • You need energy scheduling.
  • You work on Web, Api.
  • You also want transmission reservations.
OATI webOASIS review

Questions people ask

Is Emerson Ovation or OATI webOASIS better?
Neither clearly leads. Emerson Ovation starts at On request and OATI webOASIS at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Emerson Ovation or OATI webOASIS?
Emerson Ovation starts at On request and OATI webOASIS at On request.
Does Emerson Ovation or OATI webOASIS run on more platforms?
Emerson Ovation runs on Windows, On-premise. OATI webOASIS runs on Web, Api.
What is Emerson Ovation best used for?
Emerson Ovation is most often used for replacing an end-of-life control system on a coal or gas unit during a planned outage, where the vendor must supply turbine control as well as plant control, a municipal water authority standardising treatment plant control across several sites under one nerc-adjacent security regime, an ipp wanting the dcs and the safety instrumented system engineered in the same tool rather than integrated across two vendors, hydro operators needing iec 61850 and dnp3 into a control system that also runs the balance of plant. Of those, replacing an end-of-life control system on a coal or gas unit during a planned outage, where the vendor must supply turbine control as well as plant control and a municipal water authority standardising treatment plant control across several sites under one nerc-adjacent security regime are not what OATI webOASIS is typically brought in for.
What can Emerson Ovation do that OATI webOASIS cannot?
Emerson Ovation covers Power application libraries, Ovation SIS, Embedded historian, NERC CIP tooling. OATI webOASIS covers Energy scheduling, Transmission reservations, E-tagging, Market operations.

Answered from the vendors’ own pages

Emerson Ovation: Is Ovation the same as DeltaV?

No. Ovation targets power generation and water; DeltaV targets chemicals, life sciences and refining. They are separate products with separate engineering tools and separate support organisations.

OATI webOASIS: How much does OATI WebOasis cost?

OATI does not publish pricing on its website; pricing is customized based on customer needs. Contact sales at 763-201-2000 or [email protected] for pricing information.

Source
Emerson Ovation: Can I get a price without talking to Emerson?

No. There is no published price list, no trial and no self-service configurator. Every Ovation number comes through Emerson or a certified partner.

OATI webOASIS: What is OATI's pricing model?

OATI uses a custom enterprise software sales model where pricing is tailored to individual customer requirements rather than using standard published tiers.

Source
Emerson Ovation: Does Ovation 4.0 mean I can stop buying Emerson hardware?

No. The software-defined architecture virtualises controllers, but the I/O and field interfaces are still Emerson hardware and are still the bulk of the equipment cost.

Emerson Ovation: What decides the price?

Controller count, I/O point count and the number of operator workstations, plus the engineering hours to configure the control logic for your plant.

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