If you get in touch with us first to arrange an appointment, you are welcome to visit us in Berlin and see a picea system operating live. We are also currently installing a number of reference systems in Germany. Sign up right away on the enquiry form on our homepage so that you receive information and updates before anyone else.
We first of all determine your personal requirements together with you. We will then draw up a quote, which usually ranges between €85.000 and €120.000 (incl. 0% VAT). As of 01.01.2023, the VAT on electricity storage systems for private buildings has been reduced to 0 percent. In a subsidy check, we examine nationwide and regional subsidy possibilities for you. Feel free to ask our customer advisers about regional subsidy opportunities. The delivery date will be agreed with you individually. The delivery time is about 12 months.
picea stores surplus PV electricity from summer as green hydrogen for you, and makes it usable again in winter to supply homes with CO2-free electricity all year round. In addition, the energy from midday is stored to reliably cover your consumption in the evenings and at night.
picea is the Latin name for spruce tree, which grows widely throughout Europe. Because of its fast growth and the timber’s excellent usability, the spruce is the most commonly occurring tree in Germany. Like spruce trees, picea stores sunlight and helps to reduce CO2 throughout Germany.
picea’s performance has been optimised for single-family homes and their consumption patterns. However, it is often possible to use picea in other application areas or to connect several picea systems together to achieve an even higher performance for commercial premises and apartment buildings. Our customer advisers will be delighted to help you.
Additional heating is always required in addition to the picea system. The waste heat from picea is generally not sufficient to heat a house all year round. picea can be combined with all standard types of heating systems. No matter what is used for heating (oil, gas, wood or electricity): with picea you need less of it. Heat pumps are particularly suitable for new buildings. Here, the electricity from picea can be used to operate them and create a modern system for CO2-free heating.
Thanks to hydrogen’s excellent properties for storing energy, electricity produced in summer can be used seasonally. Excess electricity from the PV system is used for electrolysis during the day. The electrolyser is a module in the picea that uses electrical energy to split water (H2O). In the hydrogen storage tank, these resulting H2 molecules are collected and used in winter to supply your electricity needs with the help of the fuel cell, when the sun no longer provides enough energy.
The integrated battery is used to supply your consumption even in summer or in the transitional period. Electricity that is not directly used during the midday period is stored in the battery and made usable again in the evening and at night. Load and yield peaks can also be absorbed by the battery. Combining short-term storage (battery) and long-term storage (hydrogen) therefore provides you with an optimal supply.
In summer, picea produces hydrogen. The conversion produces waste heat that can be used as service water. This summer heat is provided at a temperature of 55 °C. This can be used to heat a buffer or drinking water storage tank. This enables picea to relieve the heating system when producing domestic hot water in summer. In winter, hydrogen is used in the fuel cell to generate electricity. The resulting waste heat is released into the house via the ventilation unit. Used air is extracted and used to cool the fuel cell. It is then passed over a counterflow heat exchanger and releases the heat to fresh air, which is then preheated and prehumidified and fed into the house. This means that picea not only uses the waste heat from the fuel cell, but also keeps the heat in the house that would otherwise be lost during ventilation. If there is no central living room ventilation, the heat can also be used via the buffer or drinking water storage tank.
Every storage tank has an efficiency rating. The efficiency rating refers to the fact that energy is partly stored in the storage tank but also partly released as heat. This heat energy can often no longer be used. picea stores the energy as hydrogen. The hydrogen is produced by the electrolyser and fills the storage tank. The electrolyser has a 70% efficiency. When energy from the storage tank is needed, the fuel cell comes into play and converts the hydrogen into electricity and heat. The fuel cell has a 50-60% efficiency. picea is installed in the house where electricity and heat are needed. When electricity and heat are produced in the conventional way, this produces CO2, which pollutes our environment. picea, on the other hand, uses only CO2-free solar energy and supplies both forms of energy – electricity and heat. picea is therefore highly efficient and achieves almost 90% efficiency. This makes picea one of the best energy systems available on the market today.