In view of constantly rising energy costs, it is more important than ever to use the available resources as efficiently as possible. Energy from the sun is inexhaustible and costs nothing. Whatever the statutory demands, an environmentally responsible and sustainable approach to our environment should influence all our decisions and, in particular, the returns from a photovoltaic system are better than those offered by a savings account. These days you won't find gold in the streets, but rather on the roof! The performance guarantees from manufacturers mean that extremely efficient and economical systems can be built.