An ever-decreasing cost of photovoltaics (PV) combined with generous installation subsidies lead to a growth of PV systems in Sweden. A large-scale penetration of PV power would make Energy Storage Systems (ESS) interesting for providing back-up storage, enabling flexibility and regulating intermittence. ESS represents a vital link between electrical supply and demand, and moreover a critical feature for increasing the use and attractiveness of renewable and intermittent energy sources. The purpose of this study is to do a quantitative analysis examining the most beneficial way to store electricity from PV regarding investment cost, life span, capacity and pay-off time. The study object is Valsätraskolan, a school in Uppsala with an existing PV system. The thesis shows that Lithium-ion batteries are the best prospected battery type but still not an economically profitable investment. With the current grid- and battery prices the most suitable battery solution has a pay-off time of 125 years. If the school would extend their PV system to cover all preferable roof areas, the pay-off time would be 48 years. If ESS are to become attractive from a financial point of view, the grid prices would have to increase and the cost for ESS decrease substantially.

Translated work is concerned with issue of reduction of production expenses and planning of production process in company for assembly operations of thermoblocks and aquablocks for gas kettles.In this work is wrote about planning of production and bid for a system of observing process of production cycle.