Lövstabruk, Stable Building

The Building

Building pre-intervention

Building post-intervention

Lövstabruk is described as Sweden's most important ironworks during the 17th to 19th centuries. The buildings from the 18th century are listed and form part of the Lövstabruk monument. The stable building in Lövstabruk was chosen as the site for installing integrated solar cells as a result of the government's requirement for the National Property Board to develop suitable electricity-generating solar panels on the so-called subsidised properties.

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The Solution

Solution post-intervention

What is the Solution?

The purpose of installing solar panels on the grant property was to create fossil-free property electricity and to show good examples of solar panels in sensitive cultural environments. Among the project goals is also that of creating an installation where the real estate agency's manager can follow the facility's cost, efficiency, maintenance, need for preparatory work and supplementary work for construction and electricity, study of aging, sustainability over time, find suitable forms for cooperation, repayment period and control and regulation system

Why Does it work?

The project has been completed with the expected quality and the system is in operation. The facility is aesthetically very appealing and is a good example for SFV to showcase what can be discreetly done with modern technology in our sensitive cultural environments. The BIPV elements are well-integrated in the upper slopes of the mansard roofs and from the ground the appearance is hard to distinguish from any other sheet metal roof.

PROS

The roof is a mansard roof typical of 18th-century manor house architecture. Since it was last renovated in 1986, it has been covered with black sheet metal. The chosen solution has a high quality of integration and is almost indistinguishable from a conventional black metal roof covering.

CONS

The solution with "solar cell film" means that the sheet on the roof in question needed to be replaced, regardless of how much of the surface was covered by the solar cells. The measure thus involved an extensive intervention for the roof itself, but significantly less visual impact after the measure compared to conventional solar cell panels that are mounted on the outside of the existing roof

Type of installation

Replacement (building integrated - BIPV)

Part of the building

Roof only

Mounting system

Reversible mounting of solar panels is carried out with integrated solar panels in new metal sheets of the brand Lindab SRP25N (SR=Solar roof), specially adapted for solar panels, SveaSolar was the contractor. The roof construction consisted of rough roof boards that were retained. In order to make the substrate smooth, plywood was laid over, then underlay cloth and folded sheet metal in a slightly narrower dimension than normal, approximately 400mm wide, which matches the thin film (brand Sunwind), which was glued on top (neither mono. nor polycrystalline panels).

Orientation

South and east slopes

Slope

Area (m²)

200

Availability

Yes, available on the market

Manufacturer

Lindab

Model

Lindab SRP25N (SR=Solar roof)

PV module format