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Energy · head to head

OATI webOASIS vs OSIsoft PI System

OATI webOASIS logo

OATI webOASIS

Energy

Energy trading and transmission management platform

From
On request
Rated
-
Full reviewWebsite
OSIsoft PI System logo

OSIsoft PI System

Energy

Real-time operational intelligence for industrial operations

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OATI webOASIS no public pricing published; custom enterprise sales model requires direct contact; OSIsoft PI System oSIsoft is now AVEVA and osisoft.com redirects to the AVEVA PI System pages
  • They diverge on capability: OATI webOASIS covers Energy scheduling, OSIsoft PI System covers Real-time data collection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OATI webOASIS and OSIsoft PI System actually diverge.

Attributes where OATI webOASIS and OSIsoft PI System differ
AttributeOATI webOASISOSIsoft PI System
PlatformsWeb, ApiWindows, Web, Api
Founded19981980

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 OATI webOASIS

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

Only in OSIsoft PI System

  • Real-time data collection
  • Time-series data storage
  • Advanced analytics
  • Asset framework
  • Visualization tools
  • Event frames
  • Data compression
  • Notifications and alerts

Both cover

  • SSL encryption

What people use each for

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

OATI webOASIS

  • Energy tradingnot OSIsoft PI System
  • Transmission schedulingnot OSIsoft PI System
  • Market settlementsnot OSIsoft PI System
  • Grid balancingnot OSIsoft PI System

OSIsoft PI System

  • Collecting and historising high frequency industrial process and sensor datanot OATI webOASIS
  • Operations dashboards and trend analysis for plants and utilitiesnot OATI webOASIS
  • Feeding real time operational data into analytics and digital twin applicationsnot OATI webOASIS

Where each one falls short

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

OATI webOASIS

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

OSIsoft PI System

  • OSIsoft is now AVEVA and osisoft.com redirects to the AVEVA PI System pages
  • No pricing is published; osisoft.com/pricing resolves to AVEVA product pages with no rate, minimum or cost driver
  • Licensing runs through the AVEVA Flex Subscription Program rather than a published per-seat or per-tag price
  • The PI System is split across separately listed products including PI Server, PI Vision, PI Data Infrastructure and Edge Data Store

Pricing, plan by plan

OATI webOASIS

On request

No published plan breakdown. See the OATI webOASIS review.

OSIsoft PI System

On request

No published plan breakdown. See the OSIsoft PI System review.

Which should you pick?

Choose OATI webOASIS if

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

Choose OSIsoft PI System if

  • You need real-time data collection.
  • You work on Windows, Web, Api.
  • You also want time-series data storage.
OSIsoft PI System review

Questions people ask

Is OATI webOASIS or OSIsoft PI System better?
Neither clearly leads. OATI webOASIS starts at On request and OSIsoft PI System at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OATI webOASIS or OSIsoft PI System?
OATI webOASIS starts at On request and OSIsoft PI System at On request.
Does OATI webOASIS or OSIsoft PI System run on more platforms?
OATI webOASIS runs on Web, Api. OSIsoft PI System runs on Windows, Web, Api.
What is OATI webOASIS best used for?
OATI webOASIS is most often used for energy trading, transmission scheduling, market settlements, grid balancing. Of those, energy trading and transmission scheduling are not what OSIsoft PI System is typically brought in for.
What can OATI webOASIS do that OSIsoft PI System cannot?
OATI webOASIS covers Energy scheduling, Transmission reservations, E-tagging, Market operations. OSIsoft PI System covers Real-time data collection, Time-series data storage, Advanced analytics, Asset framework. Both handle SSL encryption.

Answered from the vendors’ own pages

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
OSIsoft PI System: How much does the AVEVA PI System cost?

AVEVA PI System (formerly OSIsoft PI System) operates on a subscription-based commercial model with customized pricing. The company structures subscriptions to match specific use cases and business needs, requiring direct contact with account representatives.

Source
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
OSIsoft PI System: What is AVEVA PI System's pricing model?

AVEVA offers subscription-based licensing for software components running on-premises or in the cloud. Subscriptions are customized per customer use case, and pricing is determined through consultation with local account representatives.

Source
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