This document summarizes a building integrated photovoltaic (BIPV) project at the Ministry of Defense headquarters in Paris. The project involves installing a 820 kilowatt-peak solar roof covering 7,000 square meters, making it the largest integrated solar roof in Paris. Over 820 megawatt-hours of electricity will be produced annually on-site from renewable energy. Specialized PV modules were custom designed to match the roof's triangular shapes and zinc appearance while meeting fire safety and performance standards. The BIPV installation demonstrates that solar technology can be architecturally integrated and serve as an active building material rather than just bolted-on panels.

1. Minister of Defense – Paris
Agence Nicolas Michelin & Associés © info-chantier-balard.fr

2. © info-chantier-balard.fr
 South West of Paris (15e) – Headquarter of the French Army, Airforce & Navy
 A projet under the consortium « Opale Defense » led by Bouygues Constructions
 A BIPV project implemented by ISSOL

3. PHOTOVOLTAICS MEETS
THE FAMOUS ZINC ROOFS OF PARIS

4.  Green architecture following the strictest standards – © HQE & BREEAM
Certification
 Bioclimatic design with assisted natural air ventilation
 Self-sufficient 10 months per year
 80% of energy needs will be produced on site using renewables
 A 820 kWp (7000 m2) BIPV installation ”zinc colour”
 The largest integrated solar roof of Paris
 Above 820 MWh per year of locally produced electricity
Minister of Defense – Paris
Agence Nicolas Michelin & Associés © info-chantier-balard.fr

5. A BIPV Challenge
DESIGN






No Photovoltaic/Technology appearance
Homogeneous rendering – dark zinc – Paris roofs
Triangular shaped roofs
1,500 different module shapes to match the roof geometry
PV modules acting as building materials (élements constructifs actifs)
Substitution of steel gratings (caillebotis)

7. A BIPV Challenge
TECHNICAL







Custom-made cells colour – special development
No visible ribbons or wires
Fire Class 0 (BS1d0) – no combustibility – for very risky areas
Anti glaring – Candela < 10 000 – for safe airship landing
12 mm laminated safety glass for accidental shock resistance – glass/glass
No visible mounting system
PV glasses raised on steel framework and fixed on secondary aluminium structur

8. A BIPV Challenge
PV Technology





Mono crystalline PV technology
187 000 PV 6’ cells – 4,46 Wp
Custom-made cells colour – special development
No visible ribbons or wires
Glass glass
 187 000 PV cells – 4,46 Wp

9. Case study conclusions
 It is possible to give an architectural relevance to the technology
 Standard solar modules are just a transition
 Traditional IEC 61215/61730 norms become irrelevant : general construction norms
apply
 Security norms
 Safety glass norms
 Mechanical resistance norms
 Fire resistance norms
 PV is an architectural component
 PV is an active building material
 PV plays a double function
 PV is rational
 PV substitutes traditional materials
 BIPV Cost = Cost of construction material + cost of PV
 The cost reduction of the technology opens new doors/new opporutinity to tackle the
entire building envelope
 2006 : 490 € / m2
 2013 : 72 € / m2 *
 Nearly-Zero Energy Building Directive

10. ISSOL sa/nv
Zoning Industriel des Plénesses
Rue du Progrès 18
4821 Dison (Liège)
Belgium
www.issol.be
Follow us on Twitter: twitter/issol
Tel: +32 87 33 81 64
Abroad:
ISSOL Spain Sl – Madrid
IGP Sol sarl – Perpignan (F)