Involvement of photovoltaic panels and heat pumps for family houses and their subsequent
regulations to obtain maximum energy self-sufficiency

Petr Levek, Josef Kotlík

Ústav chemie a technologie životního prostředí Fakulty chemické, VUT Brno, Purkyňova 118,

 612 00 Brno, petr.levek@vut.cz

Abstract

It has been nearly 15 years since the first installation of photovoltaic panels in the Czech
Republic. During that time many things have changed, but the photovoltaic panels are still on our
market and in greater numbers, and not only thanks to state subsidies for renewables.

Increasingly, it is possible to see photovoltaic panels in small numbers on houses where private
users try to get at least a little from renewable sources as solar energy for their own benefit or
for the added form of financial support for electricity sold subsequently.

Not only because the focus is on systems for small users, such as family homes and small businesses
with ordinary consumption up to 10kWh, which solves the issue of economic indicators of such
systems. Solution ecology is not available and in most cases is a secondary objective. The main
goal for these smaller users thus remains a quick return and subsequent gain in terms of maximum
possible energy self-sufficiency. To achieve optimum results in addition to the implementation of
appropriate elements, reduction of consumption, use of modern energy-saving appliances, efficient
use of energy, the possibility of regulation, thanks to the data and predictions. The best optimal
wiring for houses at acceptable cost with a return of about 12 to 15 years and the use of
photovoltaic panels, battery storages and heat pumps, today reached during the lifetime value of
more than 70% self-sufficiency. For larger investments, according to the results we can achieve
complete energy independence much earlier, but economic indicators are for ordinary users, in most
cases, unacceptable. Our goal is for all implementations with the use of our control, with the help
of the company Ekoenergie, achieving levels of about 80% energy self-sufficiency, and has been
since the first day of commissioning of the system. These complete systems for regular users and
owners of family homes, the planned reduction in the total return on the value of a maximum of 8
years.

Keywords

Renewable sources of energy, regulation, photovoltaic panels, energy self-sufficiency