
Solar for the flat roofsother systems rule out.
ArcEdge Power is the U.S. representative and distributor for Over Easy Solar.
Tromsoterminalen, Tromso, Norway. European reference installation.
Photo: Over Easy SolarArcEdge Power is the U.S. representative and distributor for Over Easy Solar. We supply the system and support your roofer or solar installer with layout, wind load data and training.
How It Works
Each Over Easy unit arrives pre-assembled: vertical two-sided solar panels, mounting frame and cabling in one piece. Units are set on support feet that rest on the roof surface. There are no fasteners and no roof penetrations, and most projects need no ballast. Both faces of each panel generate power, from direct sun and from light reflected off the roof.


Step 01
Lay out the feet
Support feet are placed on the roof surface to the project layout.
Step 02
Set the units in place
Pre-assembled units drop onto the feet. No fasteners, no penetrations.
Step 03
Connect the rows
Rows are cabled together, with the electrical connection made by a licensed electrician.

Switzerland
European reference installation
Best For
Green roofs
Plants keep growing between and beneath the rows, and the system can be added to an existing green roof.
Roofs with weight limits
About 12.2 kg/m2 (about 2.5 lb/sq ft).
Light-colored, reflective roofs
Reflected light raises output.
Crowded roofs
Vertical rows work around rooftop equipment and leave the membrane accessible for inspection and repair.
xM-3 QUATTRO-256S
| Rated power | 256 Wp per unit |
|---|---|
| Cell technology | Silicon heterojunction (HJT), bifacial, 95% bifaciality |
| Unit size | 1580 x 1489 x 309 mm (about 62 x 59 x 12 in) on the STD 60 foot |
| Unit weight | About 28.4 kg (63 lb) |
| Roof load | About 12.2 kg/m2 (2.5 lb/sq ft) |
| Roof area per unit | 2.31 m2 (24.9 sq ft) |
| Glass | 2 x 3.2 mm tempered solar glass |
| Max system voltage | 1000 V DC |
| Operating temperature | -40 to +85 C |
| Support feet | STD 60 (conventional flat roofs), STD 125 (gravel roofs, heavy snow), BIO 120 (sedum green roofs), BIO 300 (intensive green roofs) |
| Pallet | 27 units, 6.9 kWp |
| Warranty | 15 years product; at least 80% output after 25 years |
| Wind load | Calculated per project, including to ASCE 7-22 |
The full datasheet and planning documents are available in the spec library.
When it produces
Vertical east-west rows produce two daily peaks, morning and late afternoon, instead of one at midday. Snow and dust slide off vertical glass.
Over Easy Solar reports 54% more energy per installed kWp than a conventional reference system in Tromso, Norway, and 27% more in Oslo. In Alicante, Spain, the conventional south-facing reference produced more. Results depend on latitude, orientation and roof reflectance. Ask us for a project-specific layout and yield report.

Norway
European reference installation
Downloads
- Datasheet
- Installation manual
- Product booklet
Reference Projects
European reference installations

Ullevaal Stadium
Oslo, Norway
248.4 kWp, 1,242 units
European reference installation

Tromsoterminalen
Tromso, Norway
320 kWp, 1,600 units, no ballast and no connection to the roof
European reference installation

Bilia Vollebekk
Oslo, Norway
102.2 kWp on a green roof
European reference installation

Loren Skole
Oslo, Norway
46.2 kWp on a green roof
European reference installation

Sempergreen HQ
Netherlands
Green roof
European reference installation
FAQ
- Is it fastened to the roof?
- No. The units rest on support feet on top of the membrane or green roof. Wind load is calculated for each project to confirm whether any ballast is needed.
- Does it work on a pitched roof?
- No. It is for flat roofs with a slope of 5 degrees or less. For pitched roofs, see Roofit.Solar. See Roofit.Solar →
- Can it go on an existing green roof?
- Yes. Because the units sit on top of the vegetation layer, they can be added to an existing extensive green roof.
- Does it work with standard inverters?
- Yes. Inverters are selected and sized the same way as for a conventional system.
- Who installs it?
- ArcEdge supplies the system and supports your roofer or solar installer with layout, wind load data and training. Electrical connection is done by a licensed electrician.
- What do you need to quote a project?
- A roof plan or aerial image with one known dimension, the location, roof obstacles and their heights, parapet height, and the roof membrane type.
- What is the warranty?
- 15 years on the product, and at least 80% of rated output after 25 years.
Start a Project
Send us your roof plan and location and we will prepare a project-specific layout and yield report.
