Photovoltaics designate the technique to transform sun light into electric energy.


    Modern solar panels reach an efficiency of over 20%. Hence, 6 to 10 square meters of roof paneling can cover an average European's electric energy demand. Depending on the type of system, costs amount to 3,000 – 5,000 Swiss Francs on average. This way, the mere energy amortization takes 0.5 to 2 years.


    Photovoltaic systems have a life cycle of far more than 25 years and are thus also considered an interesting investment object.


    With the help of a battery storage system electric energy can be stored and used on demand. Such systems are implemented as large scale systems in the smart grid or in private homes.


    Battery storage systems are increasingly important in connection with the growing and volatile photovoltaic and wind energy production. One decisive advantage of this technique is its fast reaction time of less than 1 second.


    Modern storage systems mostly consist of lithium batteries. Their charge-recharge cycle has already surpassed 10,000 cycles.


    Smart Grid designates those power grids, energy supply systems, energy consumers as well as communication and metering systems which are linked and exchange information so as to act independently. This ensures a safe and efficient power supply.


    The term smart grid is comprehensive and is therefore overused. However, true smart grid developments and solutions have only just begun.


     Prosumer is an English term. It is a combination of the terms producer (private energy production) and consumer (private energy consumer).


    Today's power grids as well as most market models are mainly based on a centralized, hierarchical production and distribution of power. Contrary to this, the increasing number of prosumers means a decentralized power production.





     Self-consumption is defined as the amount of energy which is produced and simultaneously consumed in the same place.


    The growing number of photovoltaic and wind installations cause an increasing strain to the power grid. A maximum amount of self-consumption stabilizes networks and thus ensues lower costs in the grid expansion.


    The combination of battery storage systems and photovoltaics leads to a higher quota of self-consumption or energy autarchy respectively.










  • Michael Wolf


    Michael Wolf
  • Andreas Wirtz


    "Our success is based on transparency, trust and competence."
    Andreas Wirtz