EspaiZero, the first 100% energetically self-sufficient work center in Spain, created by the engineering firm Wattia Innova to promote energy self-consumption, has won the prize for the best energy project awarded by the Association of Energy Engineers of Spain. This recognition is part of the AEE Awards for recognition of excellence in energy matters that were offered at the I Congress of Energy Engineering – IENER’18.
The awards are intended to recognize the excellence of the work of professionals, organizations and companies by colleagues and other professionals in the energy industry. EspaiZero has been recognized for its quality and focus on innovation in the use of energy sources and the impact on reducing consumption and polluting emissions.
Opened in 2013 in Olot (Catalonia), EspaiZero has shown that with the application of a list of energy saving measures, efficient renewable sources and an automation system that manages it correctly, zero energy consumption can be achieved. In parallel, EspaiZero works as a living laboratory in constant evolution where the team of engineers experience from precise data that are obtained in real time through a large number of sensors.
As a consequence of its pioneering nature at European level, EspaiZero has already received more than 2,400 visits in the last two years from authorities, companies, schools or interested individuals, even receiving visits from UNESCO and GreenPeace that recognized EspaiZero as an truly experience in Europe.
Geothermal energy, solar panels and storage
EspaiZero has geothermal energy for the production of thermal energy. For the generation of electricity, a photovoltaic solar system has been installed, dimensioned so that EspaiZero can become autonomous throughout the year. The electrical energy produced is consumed when it is produced and the surplus is stored in batteries so that it can be used when necessary. During the night and cloudy days, the batteries supply EspaiZero with electrical energy. If there is no solar production, the batteries give the building several days autonomy for normal operation.
Apart from the accumulation of electrical energy, the building has a thermal energy storage system, in so-called water piles, which makes it possible to produce thermal energy when it is free or cheaper and consume it when necessary.
The EspaiZero model in homes with Webatt
The engineering company Wattia Innova has partnered with the electric power distribution and sales company, Bassols Energía, to found in 2017 the company Webatt Energia, a company dedicated to the commercialization of electric self-consumption equipment sonnen for homes. “Wattia’s goal has always been to ensure that all citizens can have a EspaiZero in their home and with Webatt this is already becoming a reality,” according to Franc Comino, electrical engineer, CEO of Wattia and Webatt.
Webatt, which has proposed to be the catalyst for the energy transition in Spain, is the sole sonnen gold partner in Spain and Andorra. The German group sonnen is a world leader in the manufacture of smart batteries and already has 35,000 devices installed around the world.
These devices allow solar energy to be stored during the day, especially during midday, which is the time of greatest solar radiation, to consume it when necessary. In this way, private households can be more energetically independent with 100% renewable clean energy that does not depend on fossil fuels and save more than 80% on the cost of energy.
The equipment has an algorithm that intelligently manages the battery and that allows covering, from partial needs, because the system is efficient, up to 100% of the energy. sonnen equipment have a useful life of 25 years, do not need maintenance and require an investment that ranges between 6,000 and 15,000 euros.
Source: Wattia Innova