Local renewable energy generation with BIPV and BAPV

More Information

Products/Technical solution, Technologies and Building systems

DESCRIPTION:

Coloured PV panels installed on the roof and façade of a building to maximise renewable energy production and provide surplus energy. The design of the PV modules layouts is defined by the PV modules orientation in relation to the sky, the orientation of building longest facades, and the regulatory provision regarding the appearance of the PV façade.

BUSINESS ROUTE

Target Users

Architects, Investors and portfolio managers, Landlords, Local authorities, Material providers, Real-estate developers, Research community, Social, public and cooperative housing providers

VALUE

The aim of the BIPV and BAPV is making a building energy-positive delivering excess electricity to the grid. The challenge is therefore to show that it is possible to deliver such an excess of electricity and at the same time propose an appealing architectural expression for the building facades. Using solar energy to reduce the need of energy from the grid is an interesting technology since the technology is clean and the energy can be applied directly to use.

APPLICATION

The BIPV and BAPV panels were integrated in the the school building in the Voldsløkka project to provide an overall energy production of 230 000 kWh/year. This is equal to 2 kWh/m² per year of excess electricity production, making the school a plus-energy building. This was obtained by using combinations of black and bi-coloured PV panels which are oriented at a 20-degree angle on the horizon. The rotation of the panels reduces the space for allocating the PV modules due to the panels cuts around windows and at the façade border. To achieve the planned energy target for the building, parametric design tools were used to calculate the allowed amount of PV modules at varying angles of the panels’ orientation. The corresponding electricity production was thereafter calculated for the various orientations and resulting number of modules.The application of such a design demonstrates the feasibility of large PV-integrated facades to meet a plus-energy building target and at the same time provide an appealing and dynamic architectural expression.