Polysilicon technology evaluation and licensor selection assistance.
A ten-axis, engineering-led comparison of polysilicon licensors — built for owners who need a defensible recommendation, not a licensor marketing deck.
Most licensor comparisons are written by people paid to sell one of the options.
Choosing a polysilicon licensor is a decade-long commitment worth hundreds of millions of dollars. It locks in your CAPEX, your OPEX, your purity ceiling, and your operational culture. Most comparison documents owners receive are written by parties with a commercial stake in the outcome — either the licensor itself or an advisor downstream of a licensor. NEXARSiL's technology evaluation is the opposite: an engineering-led, vendor-neutral comparison funded only by the owner.
We evaluate licensors on what actually matters in operation: purity stability at nameplate, CVD energy intensity, TCS production and recycle efficiency, HCl loop closure, STC conversion, operability of the reactors, maintenance burden, and the real CAPEX once margin stacking is removed. We read the technical proposals carefully, we pressure-test the guarantees, and we benchmark every number against what we've seen in operating plants.
The result is a ranked, justified recommendation — not a beauty contest. If a licensor's proposal doesn't survive engineering scrutiny, we say so, in writing, with the specific clause that fails and why.
A ten-axis comparison framework used on every engagement.
| Axis | What we test |
|---|---|
| Process route | Siemens CVD, FBR, upgraded metallurgical, or hybrid — and whether the chosen route is appropriate for the owner's target market. |
| Demonstrated purity | Actual plant-scale purity evidence, not pilot data. 6N/9N/11N claims must be traceable to an operating facility. |
| CVD reactor design | Reactor topology, bell-jar geometry, deposition rate, energy per kg-Si, hydrogen loop behavior. |
| TCS purification train | Distillation staging, impurity removal performance, boron and phosphorus control, sub-ppb achievability. |
| Closure & recovery | Hydrogen recycle, STC conversion to TCS, HCl recovery, and overall chlorine closure. |
| CAPEX (clean) | Line-by-line CAPEX with licensor margin, EPC margin, and contingency exposed and benchmarked. |
| OPEX | Energy, hydrogen losses, metallurgical-silicon consumption, maintenance, and specialty chemicals. |
| Operability | Turndown, start-up time, response to feedstock variability, and shutdown complexity. |
| Performance terms | Performance targets, liquidated damages structure, warranty scope, and carve-outs in the licensor's proposal. |
| Commercial terms | Royalties, upfront fees, scope of technology transfer, training, and long-term support. |
What you actually receive.
- Licensor comparison matrix with scored performance on all ten axes
- Technical red-flag register with specific clause-level risks per licensor
- Clean, margin-free CAPEX comparison with confidence intervals
- OPEX model with energy, feedstock, and maintenance assumptions
- Ranked recommendation with clear justification and the counter-case
- Board-ready executive summary that a non-technical sponsor can defend
- Detailed appendices for the engineering team
Five weeks, four milestones, one recommendation.
Scope lock
We confirm which licensors to evaluate, the target purity, the plant size, and the location-specific constraints.
Proposal review
We read every technical proposal in detail. Gaps, ambiguities, and inconsistencies become formal clarification questions.
Engineering benchmarking
We benchmark licensor numbers against operating-plant data. Claims that fail benchmarking are flagged for the risk register.
CAPEX/OPEX modelling
We build a clean CAPEX and OPEX model per licensor. Margin stacking and contingency are separated from the underlying cost.
Decision memo
Final ranked recommendation, risks, and board-ready summary delivered. Q&A session with the owner's executive team.
Questions we often get about this
How is your evaluation different from a licensor's own comparison?
Licensors compare themselves favorably to competitors because that's their job. Our evaluation is funded only by the owner and we have no commercial relationship with any licensor. The result is numbers that survive cross-examination.
Can you include NEXARSiL's own technology package in the evaluation?
Yes, but only under an explicit disclosure and firewall. The evaluation team is organizationally separated from our technology-package team, and the owner receives a full written disclosure of the conflict and the mitigating controls. If the owner prefers, we can also exclude NEXARSiL's package from the evaluation entirely.
Do you talk to the licensors directly or just read their proposals?
Both. A paper review is never enough. We submit formal clarification questions, sit in on Q&A sessions, and press on ambiguous guarantees until each licensor commits on the record. That's where the real risks surface.
What happens if none of the licensors pass the evaluation?
We say so, in writing, with a specific rationale. That has happened. In those cases we help the owner either restructure the scope, renegotiate with one licensor, or reconsider the overall project.
Talk to an independent polysilicon technology partner.
Confidential conversation. No obligation. Real production experience from the first call.