The global increase in the share of solar and wind energy in electrical grids makes the electrification of heating systems more attractive than ever before. FILTER offers ZETA (Zander & Ingeström) high-voltage electrode boilers (up to 25 kV) that play a crucial role in grid transformation.
They can start up quickly from a cold state, have a very fast reaction time, can work in parallel with heat pumps or existing boilers, and can be used for backup or peak shaving.
Founded in 1898, Zander & Ingeström is a Swedish engineering company known for its uncompromising approach to quality, safety and industrial reliability. With deep roots in Scandinavian engineering, the company has spent more than a century perfecting solutions for industries where process stability is critical and energy must be used with maximum efficiency.
FILTER is the official representative of Zander & Ingeström, providing engineering, delivery, installation, and maintenance services.
Availability of renewable power in the grid has a positive effect on the pricing in the EU’s electrical systems allowing to utilize a cheap excess energy when sun shines and wind blows. This cheap energy can be transformed to the heat by the electrical boilers, stored or immediately used in district heating system or direcrtly in your process.
As a drawback of increased share of renewable energy is the need to keep the grid frequency at 50 Hz, even when there is a surplus of renewable energy, or a lack. And high voltage electrical boilers are the perfect solutions for both conditions – they can quickly “ramp up” consuming the excess power or unload, when there is a lack of power. This is called Grid Frequency Regulation or Freqeuncy Regulation Reserve.
High Voltage Electrode Boiler, thanks to their compact design and unique functionality are well suitable for back-up and/or peak shaving reserve due to their ability for quick start-up from cold state to full load at any time.
You company plans to expand and requires expansion of existing gas or oil powered plant?
Or required capacity is just above the 20MW in fuel input and your company is subject to Emissions Trading System (ETS)?
High Voltage Electrode Boiler allows to reduce the capacity of existing or a new plant below 20MW, avoid subjection to ETS and have a reliable back-up in case of conventional boiler plan failure.
Zero-emission steam production unit
As there is no combustion inside electrode boilers, the production of steam is completely without flue gases and emissions. This means no costs for emission taxes and fuel costs.
You have high peak loads
If your existing steam boiler plant cannot handle very high steam demands, additional electrode boiler can be installed as a secondary steam production unit to help and support the existing system.
You want to avoid entering energy trading system
If your current fuel usage is over 20 MW, you might be facing the need to start trading in emission trading system. Covering one part of your steam production with electrode boiler can help to avoid that.
mFRR and aFRR ready
The system is prepared to operate in both manual Frequency Restoration Reserve (mFRR) and automatic Frequency Restoration Reserve (aFRR) services, enabling participation in grid frequency restoration and balancing markets.
The ZETA ZDKl high-voltage electrode steam boiler provides extremely fast start-up and a wide modulation range, making it an ideal solution for industries with fluctuating steam demand or applications requiring an immediate response. The boiler’s output is controlled by the water level inside the inner vessel — the higher the level, the more steam is produced. This ensures precise control and excellent energy efficiency.
Thanks to its large steam space and stable boiling surface, the ZETA electrode boiler produces exceptionally clean steam with minimal carryover. This is why it is widely used in demanding applications, including as an auxiliary boiler in nuclear power plants, where 99.9% steam quality or higher is required.
The electrode boiler design is inherently safe: if the water level drops, power is automatically cut, eliminating the risk of overheating or steam pressure explosions. This makes ZETA boilers one of the safest and most reliable electric steam generation solutions available on the market.
The ZETA ZBVA electrode boiler is a high-voltage hot water boiler designed to deliver stable, energy-efficient, and emission-free hot water production. The inner vessel is pressurised with a gas system that prevents water from boiling, ensuring consistent and controlled hot water output even under high load conditions.
Water circulates between the outer and inner vessels, and the boiler’s output is regulated by adjusting the water level inside the inner tank: the more water is in contact with the electrodes, the higher the thermal output. Heat is transferred to the consumer through a highly efficient plate heat exchanger.
ZETA ZBVA boilers are an excellent choice for district heating networks, industrial hot water systems, and peak load management, where fast response and high reliability are essential.
Electrode boilers are becoming one of the key technologies for energy producers, thanks to their emission-free operation and high flexibility. FILTER has already installed or is currently installing electrode boilers in Estonia and Latvia, and we are also working on a major project in Finland, where we are supplying four 50 MW units for one of Europe’s largest heating complexes.
Our references demonstrate that electrode boilers are an efficient solution for both grid stabilisation and peak-load management.
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