Roofit’s TOPCon Tech Squeezes 190W/m² from Slimmer Solar Tiles

Abdelrahman

February 17, 2025

Roofit.Solar’s latest Velario Slim solar roofing system introduces a novel approach to incorporating renewable energy in cities by maximizing efficiency within a sleek structure. Merging Scandinavian-inspired design with advanced photovoltaic methods, this architectural innovation delivers high energy output per unit area while respecting historical building standards.

Main Advancements

1. Efficient Spatial Design

FeatureVelario® SlimEarlier VersionChange
Panel Width471mm550mm-14.3%
Power Density190 W/m²161 W/m²+18%
Roof Coverage Capacity98%89%+9%

The slimmer profile allows near-total roof use on intricate structures such as angled roofs and towers—essential for Europe’s older cities, where over two-thirds of buildings were constructed before 1945.

2. Advanced Cell Technology
The system uses N-type Tunnel Oxide Passivated Contact cells, which:

  • Retain 92% efficiency at 50°C compared to 85% for standard cells
  • Limit yearly performance loss to 0.4% (typical systems: 0.55%)
  • Reach 21.6% efficiency via precision laser techniques

3. Aesthetic Preservation
Designed with guidance from UNESCO, the 34mm-thick panels mimic historic metal roofing styles. Verified installations cover:

  • Tallinn’s medieval district (Estonia)
  • Protected Victorian homes (Bristol, UK)
  • Art Nouveau buildings (Riga, Latvia)

Industry Impact

Debuting as EU nations work toward updated building energy standards mandating:

  • Fully renewable-powered public structures by 2026
  • 45% lower emissions in renovations by 2030

The Velario® Slim fills critical needs:

  1. City Space Constraints: Enables 24% greater panel placement on typical urban roofs
  2. Preservation Rules: Complies with 22 European heritage codes
  3. Cost Efficiency: Pays back in 6.2 years versus 8.5 years for older solar tiles

Strategic Outlook

CEO Andres Anijalg states: “This technology reshapes urban energy planning. Our data indicates 4.7 million EU residences once considered incompatible with solar can now generate self-sufficient power.”

Scheduled for initial deployment in June 2025, Roofit.Solar targets 15% of Europe’s building-integrated solar market within three years. The release aligns with €4.3 billion in EU funding for updating protected urban areas.

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