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Energy · head to head

HOMER Energy vs OATI webOASIS

HOMER Energy logo

HOMER Energy

Energy

Microgrid and distributed energy optimization software

From
$187.5/month
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: HOMER Energy now owned by UL Solutions rather than being independent; OATI webOASIS no public pricing published; custom enterprise sales model requires direct contact
  • They diverge on capability: HOMER Energy covers Microgrid optimization, OATI webOASIS covers Energy scheduling.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which HOMER Energy and OATI webOASIS actually diverge.

Attributes where HOMER Energy and OATI webOASIS differ
AttributeHOMER EnergyOATI webOASIS
Starting price$187.5/monthOn request
Pricing modelsubscriptionquote
PlatformsWindows, WebWeb, Api
Founded20091998

Identical on both: 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 HOMER Energy

  • Microgrid optimization
  • Techno-economic analysis
  • Component library
  • Sensitivity analysis
  • Energy storage sizing
  • Renewable integration
  • Load profile analysis
  • Financial modeling

Only in OATI webOASIS

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

Both cover

  • On-premise deployment
  • Cloud deployment
  • Web support

What people use each for

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

HOMER Energy

  • Sizing and optimising off-grid and microgrid systemsnot OATI webOASIS
  • Modelling the economics of solar, wind and battery combinationsnot OATI webOASIS
  • Electric bill optimisation for grid-connected sites and EV chargingnot OATI webOASIS
  • Utility-scale storage investment analysisnot OATI webOASIS
  • Comparing least-cost configurations against load and resource datanot OATI webOASIS

OATI webOASIS

  • Energy tradingnot HOMER Energy
  • Transmission schedulingnot HOMER Energy
  • Market settlementsnot HOMER Energy
  • Grid balancingnot HOMER Energy

Where each one falls short

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

HOMER Energy

  • Now owned by UL Solutions rather than being independent
  • Split into three separate products, HOMER Pro for off-grid and microgrids, HOMER Grid for bill optimisation and HOMER Front for utility-scale, so the right one depends on project type
  • Pricing is not shown on the product pages

OATI webOASIS

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

Pricing, plan by plan

HOMER Energy

$187.5/month
  • Base$187.5/month
    • No modules included; add individually
    • Basic support
    • Software updates
  • Professional$373.5/month
    • Any 4 modules included (Biomass Generation, Run of River Hydro, Advanced Grid, Advanced Load, etc.)
    • Basic support
    • Software updates
  • Expert$568.5/month
    • All modules included: Biomass, Hydro, Hydrogen, Advanced Grid/Load/Storage, Combined Heat & Power, Multi-Year, MATLAB Link
    • Basic support
    • Software updates

OATI webOASIS

On request

No published plan breakdown. See the OATI webOASIS review.

Which should you pick?

Choose HOMER Energy if

  • You need microgrid optimization.
  • You work on Windows, Web.
  • You also want techno-economic analysis.
HOMER Energy 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 HOMER Energy or OATI webOASIS better?
Neither clearly leads. HOMER Energy starts at $187.5/month and OATI webOASIS at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, HOMER Energy or OATI webOASIS?
HOMER Energy starts at $187.5/month and OATI webOASIS at On request.
Does HOMER Energy or OATI webOASIS run on more platforms?
HOMER Energy runs on Windows, Web. OATI webOASIS runs on Web, Api.
What is HOMER Energy best used for?
HOMER Energy is most often used for sizing and optimising off-grid and microgrid systems, modelling the economics of solar, wind and battery combinations, electric bill optimisation for grid-connected sites and ev charging, utility-scale storage investment analysis. Of those, sizing and optimising off-grid and microgrid systems and modelling the economics of solar, wind and battery combinations are not what OATI webOASIS is typically brought in for.
What can HOMER Energy do that OATI webOASIS cannot?
HOMER Energy covers Microgrid optimization, Techno-economic analysis, Component library, Sensitivity analysis. OATI webOASIS covers Energy scheduling, Transmission reservations, E-tagging, Market operations. Both handle On-premise deployment, Cloud deployment, Web support.

Answered from the vendors’ own pages

HOMER Energy: What are the pricing options for HOMER Energy?

HOMER Energy pricing information is not publicly available on their website. Customers must contact the vendor directly to obtain pricing information, trial access, and licensing options.

Source
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
HOMER Energy: Does HOMER Energy offer a free trial or demo?

Trial or demo availability cannot be confirmed from publicly accessible pages. Visit the main website or contact HOMER Energy sales directly to inquire about evaluation options.

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
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