Przeczytaj tekst, który został podzielony na trzy części (A–C) oraz pytania go dotyczące (4.1.–4.4.).
Do każdego pytania dopasuj właściwą część tekstu. Wpisz rozwiązania do tabeli.
Uwaga: jedna część tekstu pasuje do dwóch pytań.

In which paragraph does the author
4.1. underline how the advantages of solar tiles outweigh the disadvantages?
4.2. explain how the tiles work in order to produce an electrical current?
4.3. give instructions on how to mount and maintain the solar tiles?
4.4. present the differences between two methods of capturing solar energy?

SOLAR ROOFS

A. Solar tiles are formed of photovoltaic cells that use sunlight to create an electrical field capable
of providing energy for use inside a building. Each tile is connected by cables to a power distribution
board. The tiles are similar to the photovoltaic panels that are already widely used in construction.
The primary difference between them lies in their assembly. Whereas photovoltaic panels are attached
to an existing roof, solar tiles are part of the roof ’s construction from the very beginning. In other
words, they take the place of regular tiling. In order for them to operate effectively, it is necessary
to install an inverter. This changes the energy captured by each tile into electricity.

B. The amount of electricity gained through solar energy is directly related to the amount of sunlight
that the tiles absorb. This is obviously dependent on the climate and the roof angle. Sunny days,
of course, are more energy-efficient than cloudy ones. To ensure maximum efficiency, it is essential
to maintain and clean the tiles. In addition, it’s recommended to choose solar tiles that are positioned
flat next to each other (unlike traditional ceramic tiles). Such a combination prevents the creation
of areas of shadow, which don’t capture sunlight. The installation of photovoltaic tiles should always
be considered when building a house from scratch.

C. Solar tiles are an excellent source of renewable energy for regions with guaranteed sunshine.
They can be visually attractive but at the same time discreet, since they are part of the roof design
and not installed later. Therefore, they are a good option for buildings under renovation, for example,
in historically sensitive areas. The drawback is that there are still only a few solar tile manufacturers
and fewer skilled workers trained in their installation. The costs are high but, after five years, solar
tiles will begin to produce considerable savings. It’s possible that this method of energy production
will eventually be found in many types of buildings, including homes.