Electrode Boilers

  • Electrode productHigh efficiency – greater than 99%
  • High turndown – safely operate as low as 1% of output
  • No moving parts eliminates:
    • Downtime due to packing leaks around the hydraulically-operated shield positioning system
    • No risk of failure of internal mechanical shields
    • No hydraulic system required
  • No dielectric barriers are needed
  • No special water treatment
  • Industrial Grade components
Steam from: 3000 kW to 34,000 kW
(10,000 to 113,000 PPH)
Pressure from: 100 – 500 PSIG
Voltages from: 4160 – 14,400 Volts
Hot Water Boilers with similar capacities are also available

Theory of Operation

Vapor Power’s Electrode boiler creates operating advantages from its unique design which results in a high efficiency, high quality steam boiler. Using electricity as a clean, efficient and easily controlled fuel, all the energy input to the boiler is converted to steam with 99% efficiency. Vapor Power’s electrode generator output is controllable from 0-100%, with neither the limited turndown ratios nor the increasing inefficiency at low output conditions characteristic of fossil-fired boilers. There are no stacks to purchase and there are zero pollutant emissions.

The simplicity of the controls and engineered boiler design results in significantly reduced maintenance. With no moving parts within the boiler, there is less maintenance associated with our units. Even under the conditions of feedwater loss, for example, the electrode is fail-safe as low water in itself affects boiler shutdown, precluding catastrophic failure. There is no heat transfer through tube walls and there will never be tube failures from excessive wall temperature, poor water treatment, or fireside corrosion, since there are no tubes to fail. Heat transfer takes place directly in the water in the steam chamber, thus producing high quality steam of 99.95% purity throughout the operating range.


With over 100 years of experience in the industry and thousands of operating units, Vapor Power stands ready to assist with any specific application. Common applications include:


The Electrode generator is locally managed by a PLC-based system that controls every aspect of the boiler which includes control of water level, pressure and KW limit. All safety devices will also be monitored by the PLC. Interface to the PLC by an operator is accomplished through a HMI device that communicates directly with the boiler PLC. Remote data acquisition and control is available via ModBus, Ethernet, Bacnet, or other communication protocol.


External Pumps: BBJ-300 to BBJ-1200L


Internal Pumps: BBJ-1200 to BBJ-3400