ETAP Review: Features, Pricing & Pros vs Cons (2026)

TL;DR: ETAP is a 40-year-old electrical power-system analysis platform, now part of Schneider Electric, with a dedicated PV Array module for grid impact studies. It models 17,000+ PV modules from the California Energy Commission list, runs NREL-validated DC arc flash analysis, and is a standard tool for utility interconnection studies. Pricing is quote-based, with industry-observed seat costs of $10,000 or more. What ETAP does not do: panel layout, 3D shading, string sizing for rooftops, or proposals. For utility-scale grid studies, it earns a strong recommendation. For installers and C&I EPCs, a cloud solar design software like SurgePV covers the actual design-to-proposal workflow at a fraction of the cost. Rating: 7/10.

Author: Keyur Rakholiya Title: Founder & CEO, Heaven Green Energy Limited Expertise: 1+ GW solar projects delivered, 20+ design and engineering platforms evaluated, 10+ years EPC operations Published: 2026-07-19 Review Methodology: Official ETAP documentation (etap.com), ETAP 2026 release notes, Schneider Electric press materials, IEA PVPS and Berkeley Lab market data, practitioner interviews

Who This Review Is For

This ETAP solar review helps:

• Utility-scale developers evaluating power-system study software for interconnection
• C&I EPCs wondering whether they need ETAP alongside their design stack
• Engineering consultants comparing ETAP vs PSCAD, PSS/E, or PowerFactory
• Installers who heard “ETAP” in a utility rejection letter and want to know why
• Anyone searching for ETAP pricing before talking to sales

Who should skip this review:

• Residential installers (ETAP is not built for your workflow)
• Sales teams (there is nothing in ETAP for proposals or quoting)
• Anyone wanting a single tool for layout, shading, and proposals

What Is ETAP?

ETAP — Electrical Transient Analyzer Program — is power-system modeling and analysis software first released in 1986 by Operation Technology, Inc. in Irvine, California. It is the default electrical engineering platform across oil and gas, utilities, data centers, and heavy industry.

Schneider Electric took a controlling stake in ETAP in 2020. In 2023, Schneider unveiled an integrated digital twin platform combining ETAP’s analysis engine with its own energy management portfolio, according to Schneider Electric, 2023.

The core product is a single electrical model — a digital twin of the power network — on which dozens of analysis modules run. Load flow, short circuit, arc flash, protection coordination, harmonics, transient stability, grounding, cable sizing: one model, many studies.

Solar enters through the Renewable Energy module and the PV Array element, covered in detail below. The critical framing: ETAP studies how a solar plant behaves electrically inside a grid. It does not design the solar plant itself.

Company Background

ETAP Pricing and Licensing

ETAP does not publish prices. Every quote is modular: a base platform license plus per-module fees for each study type you need — arc flash, transient stability, renewable energy, harmonics, and so on.

Industry-observed pricing runs $10,000 or more per seat for a configuration with the modules a solar interconnection workflow requires. Network floating licenses, annual maintenance, and training add to that. Treat any number you see online with caution; only ETAP sales can quote your actual configuration.

ETAP Cost Structure

The free 30-day demo runs in a browser and covers the module collection, according to ETAP, 2026. It is the right way to evaluate before a sales conversation.

ETAP Solar Capabilities: The PV Array Module

ETAP’s solar capability centers on the PV Array element inside its Renewable Energy module. It supports 3 study modes: solar farm design and analysis, PV integration impact on the transmission grid, and PV impact on distribution networks as a distributed energy resource, according to ETAP’s PV Array documentation.

What the PV Array Module Does

• Model unlimited panels individually or in groups, in series and parallel combinations
• User-definable panel library with P-V and I-V characteristic curves from manufacturer datasheets
• One-diode and two-diode circuit model curve estimation with user-defined deviation limits
• Built-in solar irradiance calculator based on sun position, date, time, and location
• Time-series unified AC and DC power flow: simulate daily, monthly, or yearly PV injection
• Inverter maximum power point tracking (MPPT) controller modeling
• Dynamic inverter models via ETAP’s user-defined dynamic model editor
• Performance coefficients for irradiance and cell temperature effects on output

In ETAP 20.5.0, more than 17,000 PV module models from the California Energy Commission Solar Equipment List were imported into the photovoltaic library with pre-estimated characteristic curves, according to ETAP’s product documentation.

What This Enables in Practice

A transmission planner can model a 200 MW solar plant as a single machine, trip it during a fault, and watch system recovery. A distribution engineer can test how 40% rooftop PV penetration changes feeder voltage profiles and hosting capacity. A consultant can run the time-series power flow a utility demands before signing an interconnection agreement.

This is serious engineering capability. More than 2,300 GW of generation and storage sat in US interconnection queues at the end of 2024, according to Berkeley Lab, 2025 — and studies of exactly this type gate every one of those projects.

Where the Solar Workflow Stops

The PV Array module stops at the electrical boundary. There is no roof measurement, no aerial imagery, no obstruction modeling, no row spacing or pitch calculation, no automated bill of materials, and no customer-facing output. You will not produce a layout drawing or a proposal from ETAP. It sits downstream of design tools, not in place of them.

Where ETAP Genuinely Excels

Arc Flash Analysis

ETAP’s arc flash module is the benchmark implementation of IEEE 1584 and NFPA 70E. For PV systems specifically, ETAP collaborated with the National Renewable Energy Laboratory on a DC arc flash incident energy method that accounts for PV module I-V and P-V curve behavior under arcing conditions, per ETAP and NREL’s joint work, 2023.

That matters because DC arcs behave differently from AC arcs — no zero-crossing to extinguish them. If your project needs documented arc flash incident energy labels on DC combiners and inverters, ETAP is one of very few validated paths. Our own guide to overcurrent protection coordination in solar explains why these studies fail when done in spreadsheets.

Protection Coordination

Selective coordination of relays, fuses, and breakers across a collector network is where utility-scale projects live or die during commissioning. ETAP’s coordination module handles time-current curves across thousands of devices with star-view logic. We have seen projects lose weeks to protection mis-coordination that a proper study would have caught.

Transient Stability and Grid Code Compliance

Grid codes increasingly demand ride-through and dynamic response evidence. ETAP models PV plant dynamics — irradiance ramps, plant trips, faults at the point of interconnection — and produces the documentation system operators require. The 2026 release added 3D network visualization and a reworked Network Manager for navigating large models, according to ETAP, 2026.

Harmonics and Power Quality

Inverter-rich networks create harmonic distortion. ETAP’s harmonic module checks IEEE 519 compliance across the network. For plants with long collector runs and multiple inverter types, this study is often a utility requirement, not a nicety.

What Most Solar Teams Get Wrong About ETAP

The single most common mistake we see: a C&I EPC buys or requests ETAP because a utility mentioned it in a rejection letter, then discovers it cannot lay out a single panel.

Here is the contrarian truth. ETAP’s name recognition in solar far exceeds its relevance to most solar businesses. Roughly 95% of solar projects by count — residential, small commercial, even most C&I rooftop — never need a transient stability study, a DC arc flash calculation, or harmonic analysis beyond the inverter datasheet. Global solar additions hit approximately 600 GW in 2024, according to IEA PVPS, 2025, and the overwhelming majority of that capacity was designed without ETAP ever opening.

What those projects need instead: accurate voltage drop calculations, correct string sizing, shading-aware yield estimates, and a proposal the customer can sign. A cloud platform handles all 4 in under an hour. ETAP handles none of them.

The reverse mistake also exists, and it is worse. Some utility-scale teams try to substitute a design tool’s basic electrical checks for a real grid study. A cloud platform’s voltage drop output is not an interconnection study. When the utility asks for PSCAD or ETAP-class dynamic models, there is no shortcut. Match the tool to the study, not the other way round.

ETAP vs Lighter Alternatives

ETAP vs SurgePV vs PVsyst vs RatedPower

Grid-Study Alternatives

For the electrical-study side specifically, ETAP competes with PSCAD (electromagnetic transients, utility-scale inverter studies), Siemens PSS/E (transmission planning), DIgSILENT PowerFactory (European grid codes), and SKM PowerTools (US industrial). ETAP’s advantage is breadth: one model runs every study type. Its disadvantage is cost and complexity at the low end.

ETAP’s own Caneco Electrical product targets the lighter end — low-voltage and PV installation design with regional European standards built in, per ETAP’s Caneco documentation, 2025. For European electrical designers who need compliant LV calculations rather than grid dynamics, Caneco is the saner entry point.

Design-First Alternatives

• SurgePV — cloud design, 3D shading, yield, financials, and proposals in one workspace; built for installers and C&I EPCs
• PVsyst — the bankable yield standard; pair it with ETAP on utility projects, not instead of it
• RatedPower — utility-scale layout and engineering documents; closer to ETAP’s buyer but design-side
• AutoCAD for solar — drawings only; often sitting next to ETAP in the same workflow
• HelioScope — C&I simulation with lighter electrical checks

For a broader view of the electrical-design category, see our best solar software for electrical design roundup.

When You Actually Need ETAP: Practical Guidance

Use this decision framework based on project size and study requirements.

Buy ETAP (or hire a consultant who owns it) when:

1. Project size exceeds roughly 10–20 MW. Above this threshold, interconnection studies stop being optional in most markets.
2. A utility requires dynamic models. Ride-through, fault response, and frequency studies demand ETAP, PSCAD, or PSS/E class tools.
3. DC arc flash documentation is required. Large ground-mount plants with 1,500 V DC strings need validated incident energy calculations.
4. You run 5–10+ grid studies per year. Below that volume, outsourcing at $15,000–$50,000 per study beats owning the seat.
5. You design microgrids. PV plus storage plus backup generation with islanding scenarios is ETAP’s home turf.

Skip ETAP when:

1. Projects are under 1 MW rooftop. Your electrical obligations are string sizing, voltage drop, and protection per the inverter datasheet.
2. Speed of quoting wins deals. A proposal in 30 minutes beats a grid study in 6 weeks for any customer-facing sales process.
3. Shading drives yield accuracy. Use solar shadow analysis software built for obstruction modeling.
4. Financials close the deal. Payback, IRR, and tariff modeling belong in a generation and financial tool, not a power-flow engine.
5. The output is a customer document. Branded solar proposal software produces what ETAP cannot.

A Realistic Utility-Scale Stack

For a 50 MW ground-mount project, the practical stack is: a layout tool for civil and array design, PVsyst for the bankable yield report, ETAP or equivalent for the grid study, and AutoCAD for construction drawings. For bankability documentation on the yield side, our sister team at Heaven Designs maintains a guide to bankable PVsyst reports that pairs well with ETAP’s study output.

Hypothetical cost illustration for a developer doing 8 studies per year: in-house ETAP seat at an observed $10,000–$15,000 plus training versus 8 outsourced studies at $25,000 each ($200,000). The in-house case wins on cost by year 2, assuming a qualified engineer is on staff. Below 5 studies per year, outsourcing wins on both cost and quality, because study quality tracks the engineer’s repetition count more than the software license.

Who Should Use ETAP — and Who Should Not

Best Fit

• Utility-scale developers and independent power producers with in-house electrical engineers
• Transmission and distribution planners studying solar hosting capacity
• Engineering consultancies selling interconnection and protection studies
• Microgrid designers combining PV, storage, and backup generation
• Large industrial energy teams managing their own substations alongside on-site solar

Look Elsewhere

• Residential installers. Nothing in ETAP serves your workflow. A cloud solar platform built for installers handles your entire design-to-proposal loop.
• C&I EPCs under 10 MW per project. Your electrical needs end at string sizing, voltage drop, and protection per datasheets.
• Sales and business development teams. No proposals, no CRM, no customer output.
• Small engineering firms doing occasional studies. Outsource the studies; the learning curve alone costs more than the license.

Final Verdict

ETAP is exceptional at exactly one thing: electrical power-system analysis. For grid interconnection studies, arc flash documentation, protection coordination, and transient stability on solar plants above 10–20 MW, it is a default choice for good reason — 40 years of validation, an NREL-collaborated DC arc flash method, and Schneider Electric’s backing.

It is also routinely bought by the wrong buyers. ETAP cannot lay out a panel, model a roof, shade a module, or write a proposal. Solar businesses below utility scale that buy it for “design” will own an expensive seat that gathers dust.

Choose ETAP when: you run utility-scale projects needing grid studies, DC arc flash documentation, or protection coordination at volume, and you employ engineers qualified to run them.

Choose a lighter alternative when: your work is design, yield, and proposals. SurgePV covers layout, 3D shading, string sizing, financials, and branded proposals from a browser, with per-user pricing that costs less per year than ETAP’s maintenance alone.

Rating: 7/10. World-class at grid studies, irrelevant to 95% of solar workflows. The score reflects that split: near-perfect for its real audience, a poor fit for everyone else.

Take the Next Step

• Book a SurgePV demo — see cloud design, shading, and proposals in a live walkthrough
• Compare SurgePV pricing against your current stack
• See our utility-scale solar design software roundup for the full stack

Frequently Asked Questions

What is ETAP software used for in solar?

ETAP is used for the electrical engineering side of solar: grid interconnection impact studies, load flow, short circuit analysis, protection coordination, arc flash studies, harmonics, and transient stability. Its PV Array module models panels, inverters, and irradiance so engineers can study how a solar plant behaves inside the wider power network. It does not handle panel layout, shading, or proposals.

How much does ETAP cost?

ETAP does not publish prices. Licensing is quote-based and modular — you pay for the base platform plus each analysis module (arc flash, transient stability, renewable energy, and so on). Industry-observed pricing runs $10,000 or more per seat for a useful configuration, plus annual maintenance. A free 30-day online demo is available on etap.com.

Is ETAP good for solar design?

ETAP is excellent for the electrical studies around a solar plant, but it is not a solar design tool in the installer sense. It has no rooftop or ground-mount layout engine, no 3D shading analysis, no automated string sizing for rooftops, and no proposal output. For design and proposal work, tools like SurgePV, PVsyst, or RatedPower are the right category.

Who should use ETAP for solar projects?

Utility-scale developers, independent power producers, transmission and distribution planners, and engineering consultancies that must deliver interconnection studies, protection settings, or arc flash documentation. If a utility or lender requires a stamped power-system study, ETAP is a standard choice. Residential and small commercial installers should look elsewhere.

What are the best ETAP alternatives for solar?

For grid studies: PSCAD, PSS/E, DIgSILENT PowerFactory, and SKM PowerTools. For actual solar design and proposals: SurgePV (cloud design, shading, financials, proposals), PVsyst (bankable yield simulation), RatedPower (utility-scale layout), and HelioScope (C&I simulation). ETAP’s own Caneco Electrical product covers lighter low-voltage and PV design in Europe.

Does ETAP do shading analysis or energy yield simulation?

Not in the way solar designers expect. ETAP includes a solar irradiance calculator based on sun position and can run time-series power flow with irradiance patterns, but it does not model 3D obstructions, near shading, or module-level losses. For bankable yield simulation, the industry standard is PVsyst; for fast cloud shading analysis, SurgePV covers that workflow.

Is ETAP part of Schneider Electric?

Yes. Schneider Electric took a controlling stake in ETAP in 2020 and unveiled an integrated digital twin platform combining both product lines in 2023. ETAP continues to operate as an independent software brand within Schneider Electric’s energy management portfolio.

Can ETAP replace AutoCAD or PVsyst for solar EPCs?

No. ETAP replaces neither. AutoCAD handles drawings, PVsyst handles bankable energy yield, and ETAP handles electrical network studies. Utility-scale teams often run all 3 in parallel. C&I and residential teams typically need none of the 3 and can run the full design-to-proposal workflow in a single cloud platform.

This ETAP review was written by Keyur Rakholiya, Founder & CEO of Heaven Green Energy Limited, drawing on 1+ GW of delivered solar projects and hands-on evaluation of 20+ design and engineering platforms. Sources include official ETAP documentation, ETAP 2026 release notes, Schneider Electric press materials, Berkeley Lab interconnection queue data, and IEA PVPS market reporting. We disclose our affiliation with SurgePV transparently.

Review last updated: 2026-07-19