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Energy · head to head

Helioscope vs OATI webOASIS

Helioscope logo

Helioscope

Energy

Accurate solar design for commercial projects

From
$159/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: Helioscope licences are single user, so each designer needs their own; OATI webOASIS no public pricing published; custom enterprise sales model requires direct contact
  • They diverge on capability: Helioscope covers PV system design, OATI webOASIS covers Energy scheduling.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Helioscope and OATI webOASIS actually diverge.

Attributes where Helioscope and OATI webOASIS differ
AttributeHelioscopeOATI webOASIS
Starting price$159/monthOn request
Pricing modelsubscriptionquote
Founded20121998

Identical on both: free tier (No), platforms (Web, Api), 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 Helioscope

  • PV system design
  • 3D shade modeling
  • Performance simulation
  • Single-line diagrams
  • BOM generation
  • Proposal templates
  • Component database
  • 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

  • SSL encryption
  • Cloud deployment
  • Web support
  • Api support

What people use each for

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

Helioscope

  • Solar project design and modelingnot OATI webOASIS
  • Rooftop, carport, and ground-mount solar system planningnot OATI webOASIS
  • Financial analysis and sales proposal generation for solar installationsnot OATI webOASIS

OATI webOASIS

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

Where each one falls short

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

Helioscope

  • Licences are single user, so each designer needs their own
  • Projects are capped at 10 a month on both Basic and Pro
  • System size is capped by plan, at 1.25 MW DC on Basic and 5 MW on Pro, so a larger array forces an upgrade regardless of project count
  • Trackers, LIDAR modelling and API access sit on the higher tiers
  • Enterprise is priced per project with no published figure

OATI webOASIS

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

Pricing, plan by plan

Helioscope

$159/month
  • Basic$159/month
    • 1 user per license
    • 10 projects per month (120 per year)
    • 15% discount for annual billing ($1,620/year)
  • Pro$259/month
    • 1 user per license
    • 10 projects per month (120 per year)
    • 15% discount for annual billing ($2,640/year)
  • Enterprise$null/month
    • Unlimited users
    • Unlimited projects
    • Custom pricing

OATI webOASIS

On request

No published plan breakdown. See the OATI webOASIS review.

Which should you pick?

Choose Helioscope if

  • You need pv system design.
  • You work on Web, Api.
  • You also want 3d shade modeling.
Helioscope 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 Helioscope or OATI webOASIS better?
Neither clearly leads. Helioscope starts at $159/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, Helioscope or OATI webOASIS?
Helioscope starts at $159/month and OATI webOASIS at On request.
Does Helioscope or OATI webOASIS run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
What is Helioscope best used for?
Helioscope is most often used for solar project design and modeling, rooftop, carport, and ground-mount solar system planning, financial analysis and sales proposal generation for solar installations. Of those, solar project design and modeling and rooftop, carport, and ground-mount solar system planning are not what OATI webOASIS is typically brought in for.
What can Helioscope do that OATI webOASIS cannot?
Helioscope covers PV system design, 3D shade modeling, Performance simulation, Single-line diagrams. OATI webOASIS covers Energy scheduling, Transmission reservations, E-tagging, Market operations. Both handle SSL encryption, Cloud deployment, Web support, Api support.

Answered from the vendors’ own pages

Helioscope: What is the starting price for HelioScope?

HelioScope Basic plan costs $159 per month per license with annual billing at $1,620/year (15% discount). The Pro plan is $259/month or $2,640/year. Each license covers 1 user. Source: https://helioscope.aurorasolar.com/pricing

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
Helioscope: How many projects can I design monthly with HelioScope Basic and Pro?

Both Basic and Pro plans include 10 projects per month, equaling 120 projects per year. The project allocation is the same across both tiers; the difference is in design capability (1.25 MW for Basic vs. 5 MW for Pro). Source: https://helioscope.aurorasolar.com/pricing

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
Helioscope: What is the maximum solar design capacity by HelioScope tier?

HelioScope Basic supports designs up to 1.25 MW DC, Pro supports up to 5 MW DC, and Enterprise supports unlimited designs up to 30 MW DC. Accuracy within 1% of PVsyst modeling is maintained across tiers. Source: https://helioscope.aurorasolar.com/pricing

Source
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