Nowadays, the search for sustainable solutions has become increasingly urgent, reflecting the need to preserve our planet's natural resources. In this context, a concept that has been gaining prominence is that of the self-sustainable home.
This type of project, which is in line with green buildings – constructions designed to cause the least possible environmental impact – aims to reduce energy and water consumption and much more.
And this is possible, for example, by using solar, hydraulic or wind energy so that the home itself generates most (if not all) of the energy or water it uses.
Projects like this therefore represent a concrete model of how renewable energy technologies, combined with smart automation and natural resource management systems, can transform the future of housing – offering both a viable ecological alternative and an attractive economic model for the consumer.
In the interior of Minas Gerais, a pilot project is under development – led by businessman Cassio Vinicius Aarão. After four months of testing, the hybrid self-sustainable house, which integrates solar, wind, biodigester and batteries, is already showing impressive results.
The energy system is completely off-grid, meaning it does not depend on the public electricity grid to function. To achieve this energy independence, the house uses two main sources of energy: solar and wind.
Currently, the infrastructure has 16 530 W bifacial panels from Jinko Solar; a 5,5 kVA wind generator, which complements energy production on cloudy days or at night, when solar production is insufficient; two 6 kVA inverters from Growatt; and a biodigester, which transforms organic waste, such as food scraps and human waste, into biogas and natural fertilizer.
In addition, there is a Huawei battery bank with 25 kWh and a Dyness battery bank of 5 kWh for backup, both at 48 V DC, with a combined storage capacity of 30 kWh to store the energy produced during periods of high generation and provide electricity at night or on days with lower production.
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An answer
It is already a fact that we can say goodbye to utility energy, the big problem today is the production of a long-lasting battery, I think this is the biggest challenge today, because self-sufficiency will happen when we no longer need to depend on this issue.