Best Archelios Alternatives 2026: Six Platforms Compared

If you are shopping for an Archelios alternative in 2026, you are probably not disputing the engineering. Trace Software International built a suite that takes electrical calculation seriously, publishes its prices, and knows exactly which buyer it serves. The reasons people look elsewhere tend to be structural rather than technical: the capacity-banded licensing means growth moves you up a tier, and the customer-facing proposal is not what the product is organised around. There is also a third reason specific to France, and it arrived in June 2026 with the revised S21 arrete. This guide compares six realistic options, leads with the one we build, and says plainly where Archelios should be kept.

Short version. The best Archelios alternative depends on which half of the work is your bottleneck. SurgePV, at $1,299 to $1,899 per user per year, replaces the design plus proposal half with no capacity band. PVsyst answers a lender naming it by contract. PV*SOL covers European residential detail cheaply. HelioScope suits C&I engineering, Aurora suits US residential, and OpenSolar is the free option.

Why Teams Look for an Archelios Alternative

Start with what is not the reason. Nobody leaves Archelios because the electrical calculation is weak. That is the strongest part of the suite and we say so at length in our Archelios review. The reasons that actually drive the search are these three.

The capacity bands move with you

archelios PRO is licensed against project size. Silver covers projects up to 100 kWp at EUR 990 excluding tax per year, Gold extends to 1 MWp at EUR 1,490, and Platinum removes the ceiling at EUR 1,990. The free tier stops at 9 kWp on a one-year licence.

That structure is defensible. A residential practice should not subsidise utility-scale features. But buyers feel the consequence a year or two in: the first job over your band forces a purchasing decision mid-project. Practices that win an unexpected 250 kWp warehouse roof discover the licence before they discover the margin.

The proposal is not the product’s centre of gravity

Trace Software names the deliverables clearly: calculation notes, parts lists, cable lists, single-line diagrams. That is an installation dossier and it is the right output for a bureau d’etudes. It is a different artefact from the document a homeowner reads on a kitchen table.

Teams whose conversion depends on putting a legible, savings-first proposal in front of a customer within an hour of the site visit usually end up assembling that document elsewhere. Once you are transcribing numbers from a simulation into a separate quoting tool, you have introduced the step where most quoting errors are born, and you are paying for two products.

The S21 reform changed which capability decides the sale

On 5 June 2026 the revised S21 tariff arrete abolished the prime a l’autoconsommation for new installations and cut the surplus buyback rate to 1.1 centimes per kWh excluding tax. Against a regulated retail import price many times higher, exported energy is now worth close to nothing.

The design consequence is one line. Sizing to the available roof is finished. Sizing to the daytime load curve replaces it, and a battery is no longer a nice-to-have upsell but the mechanism that converts near-worthless surplus into retail-value consumption. Our French solar design software guide covers the full picture.

This matters for tool selection because most feature lists in this category were written for the old regime. A tool that models annual production against annual consumption will produce a number that looks fine and is wrong. The capability to test for is hourly resolution: does the model run 8,760 hours of generation against an hourly load profile, and does it dispatch a battery through that profile at post-reform French rates? Ask any vendor that question directly, then verify it on a real job rather than in a demo project.

What to Evaluate in an Archelios Alternative

Before the list, here is the shortlist of criteria that actually separate these products. Score candidates on these rather than on feature counts.

1. Hourly self-consumption modelling. Annual totals are not sufficient post-S21. Confirm 8,760-hour resolution against a load profile.
2. Battery dispatch. Can the tool simulate charge and discharge through the year and show the customer what storage converts?
3. Capacity ceiling. Is licensing banded by project size, and where does your pipeline sit against those bands in two years?
4. Proposal output from the same record. Does the customer document come from the design, or from a re-entry of the design?
5. Normative electrical depth. If you produce dossiers, does the tool attempt cable sizing and protection coordination at all? Most do not.
6. Total annual cost for the full workflow. Count every licence you would still need to buy alongside it.
7. Local tariff and code awareness. French rates, NF C 15-712 practice, and whichever other markets you sell in.

Six Archelios Alternatives Compared

1. SurgePV, the all-in-one pick

Best for: Installers and engineering-led teams whose bottleneck is the commercial workflow, in France or across multiple markets, who want design and proposals from one licence.

Price: $1,299 to $1,899 per user per year depending on team size. No capacity band.

SurgePV covers 3D design, 8,760-hour module-level shading, full simulation, hourly self-consumption analysis, battery dispatch modelling, financial modelling, BOQ, single-line diagrams, DXF and DWG export, and white-label proposals with e-signature. All of it runs from one project record, which is the part that matters most against Archelios. When a customer asks what happens if they add 5 kWh of storage, you change the input and the proposal updates. There is no export, no re-entry, no version of the quote that disagrees with the design.

On the French question specifically, the 8,760-hour shade and yield engine runs generation against an hourly load profile and dispatches a battery through it, so a quote at 1.1 centimes surplus reflects what the household actually consumes rather than what the array produces. Project setup is aware of NF C 15-712 practice for European installations. The financial modelling tool carries post-reform French tariff logic rather than assuming a feed-in premium that no longer exists.

Also true: SurgePV is younger than the incumbents in this list, so the user community is smaller and some jurisdiction-specific permit quirks are still maturing.

2. PVsyst, when a lender names it

Best for: Bankable yield reports where a financing agreement specifies PVsyst output by contract.

PVsyst is the reference simulation tool that independent engineers and lenders name in documents. When a contract says PVsyst, the question is not which tool is technically better but which one the contract accepts. Nothing in the Archelios suite displaces that, and neither does anything else here.

Weaknesses: It is a desktop engineering tool that is not positioned as a proposal builder or a customer-facing document generator, so teams that need one usually pair it with something else. Collaboration is file-based. In our experience the learning curve is steep, and the product is aimed at an engineer rather than a salesperson. Our PVsyst review covers where it earns its status and where it costs you time, and the PVsyst alternative guide covers the switching cases.

Against Archelios: PVsyst wins on bankability recognition, loses on electrical dossier output, and does not touch the commercial workflow at all.

3. PV*SOL, for European residential detail

Best for: European residential and small commercial teams who want detailed simulation at the lowest licence cost.

Price: roughly EUR 585 to EUR 845 depending on edition.

PV*SOL from Valentin Software is the European residential simulation workhorse. It handles detailed shading, 3D visualisation in the premium edition, and self-consumption and storage modelling, which is directly relevant post-S21. For the price, the modelling depth is hard to argue with.

Weaknesses: It is a desktop product, and in our view the interface shows its age and the proposal output is functional rather than persuasive. Multi-user collaboration is not what it is built around. Our PV*SOL review and PV*SOL alternative guides go deeper.

Against Archelios: Cheaper on published price, comparable or better on residential simulation detail, and not positioned around an electrical dossier module.

4. HelioScope, for commercial and industrial

Best for: C&I engineering teams who want fast, credible layout and simulation and already own their proposal workflow.

HelioScope has a strong reputation among commercial engineering teams for layout flexibility and mature hourly simulation. If your projects are warehouse roofs and ground-mount rather than houses, it moves quickly.

Weaknesses: It is not positioned as a proposal builder, so the customer-facing document usually lives somewhere else. Pricing is subscription per user and lands above the PV*SOL band. Residential detail is not the focus, and European normative depth is not what it is marketed on. See our HelioScope alternative comparison.

Against Archelios: Better for C&I layout speed, not positioned around an electrical dossier, and not licensed by capacity band in the Archelios sense.

5. Aurora Solar, for US residential

Best for: Residential teams operating in the United States.

Aurora is the strongest residential design platform in the US market, with deep NEC wiring, strong 3D modelling and a mature sales-side workflow. If your business is American residential, it is a serious tool and our Aurora Solar alternative guide covers it in detail.

Weaknesses: For a French or European buyer this is largely the wrong product. The code library, tariff library and subsidy arithmetic are US-first, and the pricing sits at the upper end of this list. Capability is tiered across plans, so check which tier carries the features you need before comparing prices.

Against Archelios: Better customer-facing output, weaker European compliance relevance, considerably more expensive.

6. OpenSolar, the free option

Best for: Small residential installers who need fixed software cost at or near zero.

OpenSolar has a genuinely free entry tier funded by hardware and finance partner integrations. For simple residential roofs it produces a reasonable design and a decent proposal, and the community is active.

Weaknesses: The free model is funded by add-ons, and some integrations and proposal features carry cost. In our testing the simulation depth sits below a PVsyst-class hourly engine, and C&I shading gets thin quickly. Normative electrical output is not something the product is positioned to produce. Our OpenSolar alternative guide covers where the model breaks down.

Against Archelios: Free, faster to a customer document, and not in the same conversation on engineering or compliance depth.

Comparison Table

This table reflects how each vendor publicly positions and markets its product at the time of writing, not a test of every feature in every release. Confirm current scope with each vendor.

Two patterns fall out of that table. First, Archelios is the only entry in this list that is positioned to produce a normative electrical dossier, and that is not a small thing. Second, it is also the only one licensed by project capacity, which is the structural reason growing practices start shopping.

Who Should Choose What

• Keep Archelios if your billable deliverable is the technical dossier. Calculation notes, cable schedules, protection coordination and single-line diagrams that satisfy NF C 15-712-1 and a Consuel review are work almost nothing else in this category attempts. A French design office that drops CALC to save a licence fee is trading a maintained standards library for a spreadsheet, and that is a bad trade.
• Choose SurgePV if your bottleneck is the commercial half: quoting speed, post-S21 self-consumption arithmetic, battery scenarios in front of a customer, and one record from address to signature. At $1,299 to $1,899 per user per year with no capacity band, it also removes the tier-upgrade problem. Many practices land on SurgePV plus CALC and consider that the correct answer rather than a compromise.
• Choose PVsyst when a financing agreement names it. That is the whole decision rule.
• Choose PV*SOL if you want European residential simulation detail at the lowest price and your quoting process already works.
• Choose HelioScope if you are a C&I engineering team and someone else owns the proposal.
• Choose Aurora if you sell residential in the United States.
• Choose OpenSolar if fixed software cost has to stay near zero and your roofs are simple.

Verdict

Archelios is not a product people leave because it is bad. It is a product people supplement, or occasionally outgrow, because it was built for a specific job and priced against a specific project size. The electrical calculation depth is genuine, the published pricing is a courtesy the rest of this category does not extend, and a French bureau d’etudes may rightly keep CALC indefinitely.

What has changed is the shape of the problem around it. After the June 2026 S21 reform, the number that decides whether a French project is worth doing is not the annual yield, it is how much of that yield the household consumes and what a battery converts at 1.1 centimes surplus. That is an hourly modelling question and a customer-communication question, and neither is what an electrical calculation module was built to answer.

Our recommendation is therefore split. If you produce dossiers, keep Archelios and stop looking. If you produce quotes, put SurgePV next to it on a real project and see which half of the work has actually been slowing you down. For the wider category view without the French lens, the best solar design software ranking and the solar design software pricing comparison are the next two reads.

Three things to do this week:

• Check your pipeline against your current PRO capacity band and work out when the next tier becomes unavoidable.
• Rebuild one recent French quote in a competing tool and compare the customer-facing document, not the feature list.
• Test hourly self-consumption with a battery on that same job, at post-S21 rates, in whichever tools you are shortlisting.

About This Comparison

Pricing, features and product positioning described here were checked in August 2026 using publicly available vendor information. Vendors change pricing, packaging and capabilities without notice, and several do not publish prices at all. Treat every figure as a starting point for your own enquiry rather than a quotation, and confirm current terms directly with each vendor before making a purchasing decision.

All product names, logos and trademarks are the property of their respective owners. Reference to them here is for identification and comparison only and does not imply any affiliation with, sponsorship by, or endorsement from those companies. SurgePV is a Qbits Energy product, so treat this as a vendor comparison written by an interested party and weigh it alongside independent sources and your own trial of the tools.

Where we could not verify a claim from a primary source we have said so in the text rather than repeating it. If you believe anything here is inaccurate or out of date, contact us and we will review and correct it.