Certified solar glass · made in Erlangen · installed across Europe
Based in
Erlangen, Germany
What we make
Perovskite solar glass
Operational since
2024
Certified to
IEC 61215 / 61730
What we actually do
How we work
01 · Named modules with a paper trail you can follow
02 · Aligned with IEC, TÜV, VDE and DIN
03 · One team from the first sketch to handover
No vapourware
Real glass, real paperwork.
Working laminated modules with certificates behind the numbers — not renders waiting on a breakthrough that may never come.
Low risk
The safe, sensible choice.
Performance figures, product warranties, structural logic and compliance wording your project team can actually use.
The real thing
Built in, not bolted on.
Specified as the façade, skylight, roof or greenhouse skin — at real project scale, with real detail.
One team
You always know who owns it.
Design, engineering, certification and installation stay in the same hands, from first sketch to handover.
Where it fits
A solar material for buildings people take seriously.
Façades
Energy-generating glass for premium commercial exteriors.
Roofs & skylights
Glass for the places where light, structure and energy all have to work together.
Solar greenhouses
Glazing that balances growing light, climate control and electrical yield.
Certification
IEC 61215 / 61730 alignment, structural reasoning and the project documentation to back it.
Energy modelling
Early feasibility, orientation studies and fixed-price conversations.
Installation
One connected team through production, site coordination and handover.
What it’s like to work with us
Four steps. No theatre, no consultants who vanish.
01
A real conversation
The building, its orientation, structure, ambition and constraints. No pitch deck needed.
02
Drawings & feasibility
We read your elevations, structure and rough schedule, then tell you honestly where the glass makes sense.
03
Engineering & quote
Energy modelling, structural reasoning and a fixed quote — not a vague range.
04
Build & handover
We produce, certify, install and hand over with all the paperwork. The same people stay accountable throughout.
Validated performance
A certification and field-data position built for serious due diligence.
6
Live field sites
5.29 MW
Installed capacity
<1.0% / yr
Best-case field degradation
4
IEC stress protocols passed
Field deployments
Six live projects across four climate zones.
Daqing — Heilongjiang Province, China
1 MW · Cold & Frost · Northeast
Monitoring: continuous power generation logging; system efficiency 95.3%. Annual degradation: <1.0%. Longevity: approaching zero measurable degradation over the first 18 months.
Shizuishan — Ningxia Hui Autonomous Region, China
1.91 MW · High-temperature Desert · Northwest
Monitoring: 24-hour continuous generation with quarterly IV-curve verification. Annual degradation: 1.2–1.5%. Longevity: stable performance under the highest UV dose and thermal-cycling stress in the portfolio.
Wuxi Symphony Hall — Jiangsu Province, China
1,240 kW · Humid East China · Monsoon
Monitoring: annual generation time-series with continuous online monitoring. Annual degradation: <1.2%. Longevity: architecturally integrated BIPV façade on a public performing-arts venue.
Yuanhu Lake Zero-Carbon Park — Jiangsu, China
344 kW · Humid East China · Monsoon
Monitoring: full-scene continuous monitoring with monthly IV-curve testing. Annual degradation: <1.0%. Longevity: deployed inside a designated zero-carbon park and audited against its net-zero verification framework.
CPVT Yinchuan Demonstration Station — Ningxia, China
500 kW · Arid Northwest
Monitoring: eight months of continuous logging with bi-monthly IV-curve testing. Annual degradation: 0% measurable. Longevity: independent CPVT verification — no measurable power loss across the 8-month window.
Tabernair Wuxi In-House Demonstration Station
300 kW · East China · Monsoon
Monitoring: 18-month full power record with IV-curve testing at all key nodes. Annual degradation: 0% measurable. Longevity: longest-running internal validation facility — zero measurable power loss across 18 months.
Global position
Top <0.1%
TÜV certified · IEC 61215-1-4:2021 thin-film · IEC TS 63202-1 perovskite cell · EN 50583-1 BIPV.
Field evidence
18-month
MPPT dataset across six live sites, with <1.5% annual degradation worst-case and 0% measurable degradation on selected stations.
Damp heat
4.74% loss
85 °C / 85% RH @ 2,004 h — twice the standard thin-film threshold.
Execution
Germany-led
Singaporean founder · Germany-domiciled execution · Erlangen Solar Masterplan 2040 author.
Stress testing
Damp Heat
85 °C / 85% RH · 2,004 h
4.74% loss · 2× standard threshold.
UV
104 kWh
4.79% loss · dominant residual stressor.
Thermal cycling
−40 → 85 °C × 400
1.46% loss.
Light-Heat
1 Sun @ 85 °C · 2,304 h
0% measurable loss.
Mechanical load
IEC 62782
Passed · thin-film cyclic bending.
Standards and tailwinds
EN 50583-1
European BIPV gold standard — external building envelope.
IEC 61215-1-4:2021
Thin-film PV qualification battery — design qualification & type approval.
IEC TS 63202-1
Perovskite cell measurement standard.
IEC 62782
Dynamic mechanical load testing — thin-film cyclic bending.
EN 14449 · 12150 · 12600
Laminated · tempered · pendulum impact safety glass.
EN 13501-1 · DIN EN 62305 · DIN EN 1991
Reaction-to-fire classification · lightning protection · wind & snow load engineering.
GEG §10 (Germany)
Non-residential renewable electricity mandate.
EPBD recast (EU 2024)
Zero-emission building trajectory · solar mandate.
Active pipeline
140 outreach prospects
DACH + Iberia + GCC + India + APAC.
P0 priority
Siemens · Audi · Schaeffler
Enterprise and industrial targets where building-integrated power has strategic value.
Regulatory tailwind
GEG Section 10 · EPBD · EN 50583-1
Germany, EU and Europe-wide BIPV frameworks increasingly reward building-integrated generation.
Commercial relevance
Inside the stability band required for architectural deployment.
Across cold, desert, monsoon and arid deployments, the six live field sites sit inside a 0% to 1.5% / year annual degradation band — the durability range usually expected from high-quality crystalline-silicon photovoltaics.
The IEC-equivalent accelerated-aging battery confirms the stack across UV aging, damp heat, thermal cycling and combined light-heat stress, closing the durability gap that has historically constrained perovskite use in architecture.
Commercial implication: Tabernair’s perovskite BIPV stack is positioned for 25-year service-life warranty conversations across façades, curtain walls, skylights and structural glass — contexts where conventional silicon PV is constrained by weight, rigidity and design limitations.
Have a look around
01
The glass
How perovskite solar glass works, what it’s made of, and why we’d pick it.
02
Where it goes
Façades, head offices, industrial roofs, skylights and solar greenhouses.
03
Who you deal with
The people behind the advice, the details, the install and the handover.
Dr Martin Stephen
Founder & Chief Executive
Role
Founder & Chief Executive
Experience
20+ years in façades & solar glass
Credential
PhD (BioEngineering)
Based
Germany · operating worldwide
No middlemen
Request executive briefing