Energy balance thanks to flexible energy devices

Why are flexible energy
devices key to the future?

The growing share of renewables means unstable electricity production, which cannot be regulated like a conventional power plant.

Flexible energy devices are therefore an indispensable element without which the integration of solar or wind power plants can’t go smoothly. They offer fast and precise regulation, allowing the grid to withstand sudden fluctuations in supply or consumption – and we can all be more confident that we can simply keep the lights on in the future without fear of outages.

Energy balance

How it works

01

Quick response
to network fluctuations

Flexible energy devices serves as a “buffer” between unpredictable renewable generation (solar or wind power plants) and constantly fluctuating consumption (households, businesses). As soon as a surplus situation arises (e.g. during a sunny day), the flexible energy devices either reduces the output (CHP units, batteries) or removes the excess energy and stores it (batteries, thermal storage). Conversely, when electricity is scarce, production can be increased and the missing power can be fed into the grid.

Boxy ve fotovoltaické elektrárně
Boxy ve fotovoltaické elektrárně
02

The principle of CHP units, batteries and thermal storage

CHP unit (CHP): It produces electricity and heat simultaneously (usually from natural gas), so it achieves high efficiency. In addition, it can be ramped up quickly, so it covers consumption exactly when the grid needs it.
Batteries: they allow renewable energy to be stored (e.g. when it is sunny) and returned to the grid when there is a shortage (evening, night). It is this ability to charge/discharge in minutes or seconds that is the key to maintaining stability.
Thermal accumulator: allows energy from the grid to be stored in the form of heat during periods of excess production and subsequently used for heating, domestic hot water (DHW) or heating of process media.
03

Automatic
monitoring and control

Prediction and control systems are used to know exactly when the flexible energy devices should react. These evaluate data on actual and expected generation, consumption and electricity prices in the market. They react accordingly by increasing and decreasing power output or consumption. Smart management can help stabilise the electricity grid while fully meeting the power (electrical or thermal) demand itself.

Fotovoltaická elektrárna
Fotovoltaická elektrárna
04

Flexibility and the market
support services (SVR)

In the modern energy sector, the so-called market with support services (especially SVR – power balance services) is gaining ground. When the grid is out of balance, the transmission system operator (CEPS in the Czech Republic) buys instant regulation – and flexible resources offer it:
aFRR+ (positive services): fast supply of electricity or reduction of own consumption when there is a lack of power in the network.
aFRR- (negative services): limitation or complete shutdown of own power supply or increase of own consumption when there is a power surplus in the network.

The operator pays for the reserved capacity of the flexible energy devices (resources and appliances), and in addition rewards actual activation.

Flexible energy devices are an essential element of the modern energy industry. They enable grid stabilisation, the integration of renewables and secure electricity supplies well into the future.

Investing in these solutions brings not only stability, but also economic benefits in the energy market. At MV Flexi, we are creating the energy of the future. Contact us and be part of the energy revolution!
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Smart Energy.

Flexible solutions.

A stable future.