BIPV: Built-in photovoltaics in the UK

A promising new renewable energy technology is called Building Integrated Photovoltaics (BIPV). This describes solar cells that are built into the construction materials used to make a building, thereby looking as natural as what would have been a regular roof, window, awning, and even concrete.

BIPV systems can provide savings in electricity costs for years - potentially even replacing conventional and polluting electric sources. In almost every area the electricity provided can make conversion to photovoltaic (PV) worthwhile in only a few years.

BIPV systems can be made to be “on-grid” - interfaced with the local electric company. That way, the homeowner can automatically sell any excess electricity back to the utility for a check back!. The on grid system also guarantees a back-up source of power if there is ever an extended period of no sun.

BIPV systems can be designed to blend in and look like conventional building materials and designs, including:

- The façade of a building, such as traditional view or decorated glass. This is an emerging technology that has not been perfected yet, but has tremendous potential.

- Photovoltaics can be incorporated into external structures such as awnings and ledges.

- The most common use of building integrated photovoltaics are in solar roofs, where solar shingles or panels are substituted for traditional roofing shingles. These solar cells can often be made of flexible and maleable thin film.

- Skylights made of solar cells are an obvious and effective form of BIPV

As exciting as the above technologies are, there has even been research about building photovoltaic solar cells into concrete walls!

It is clear that soon this technology may be widespread and conventional. Right now, however, you can get a head start while saving electricity (and even getting money back), reducing your carbon footprint, and serving as a model for others. BIPV systems can also help each country meet its aggressive renewable energy goals.