PHOTOVOLTAIC STEEL-BASED ROOF AND WALL SYSTEMS THYSSEN-SOLARTEC~R

摘要

In a long-term forecast by the Sarasin Institute, an average annual growth of 17.5 percent and a PV market of 1,400 MW per annum is presumed by the year 2010, whereby growth in the next four to five years will be considerably higher than 20 percent. In 2000, the photovoltaic market grew by 38 percent compared to the previous year and achieved a volume of around 288 MW. In the year 2001, solar cells were produced to a magnitude of around 400 MW (www.iwr.de). The petroleum concern Royal Dutch/Shell assumes in a "sustained" scenario that renewable sources of energy could cover approx. 5 - 10 percent of the global demand for energy by 2020, and even 50 percent of the global demand for energy by the middle of the century. Conservative scenarios of other institutes (IIASA/WEC) state that half of the total energy supply could be covered by renewable sources of energy by the year 2100. In any case, we are talking about an extreme growing market. According to the Sarasin study, the market segment of the on-grid solar systems on residential and commercial buildings makes up the largest market segment with a global market share of 42 percent - alongside the segments consumer goods market (14 percent), telecommunications (14 percent), PV/diesel-hybrid application (10 percent) and other areas. In the case of on-grid solar systems, the market volume has doubled to approx 120 MW during the year 2000 and it is here that the greatest global growth rates are predicted. The institute forecasts a volume of 700 MW for the year 2010. To go into detail - this market segment is concerned with all solar systems mounted on existing roofs or integrated into the roof, plus facades connected to the local electricity supply. With the aid of a so-called current inverter, the (direct) current produced by the solar systems is converted into alternating current and either consumed directly or is fed into the public electric grid.