Working in sales in defence tech
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Tallinn, EstoniaTokyo, JapanTallinn, EstoniaTokyo, Japan
PowerUP Energy Technologies
Designs and manufactures hydrogen fuel cell generators for defence, telecommunications and critical infrastructure, with products battle-tested in active conflict zones and NATO exercises.
Founded 201611-50 employeesTallinn, Estonia5 open positionsWebsiteLinkedIn
Advanced Materials
Products & Solutions
UP400
A 400 W portable hydrogen fuel cell generator weighing 21 kg, designed for field personnel needing to power laptops, radios, GPS units and other personal equipment. With a noise level of 45 dB and zero emissions, it suits both off-grid civilian use and military forward positions. It can be combined with batteries, solar panels or wind turbines to form a micro-grid.
UP1K
A 1 kW portable generator delivering 1000 W at 24 V, weighing 27 kg. Designed for disaster relief operations, 5G telecoms tower backup and defence field use, it shares the same near-silent and zero-emission profile as the UP400 while providing enough power for larger communication and sensing equipment.
UP3K
A 3 kW generator, scalable to 6 kW with two cells, built for defence and security field operations. It supports remote monitoring and control via IoT, multiple battery options and grid-drop detection for automatic alarm starts. A 19-inch rack integration kit is available for indoor and outdoor installations, and the UP3K is rated for 10,000 operating hours.
UPMobile
A 10 kW trailer-mounted hydrogen fuel cell generator designed for tactical operations centres and mobile military deployments. It delivers up to 15 kW rated output, supports DC and single- or three-phase AC power, includes an integrated 6.8 kWh battery extender for instant start capability, and is rated IP54 for outdoor use. Operating life is rated at 20,000 hours.
Videos
UPMobile - Trailer Friendly Hydrogen Fuel Cell Generator
PowerUP - Heat Signature
About
PowerUP Energy Technologies, founded in 2016 by Ivar Kruusenberg, develops and manufactures hydrogen fuel cell generators for defence, telecommunications, disaster relief and off-grid industrial use. The company is headquartered in Tallinn, Estonia, with an additional office in Tokyo, Japan, and draws on 20 years of cumulative research in fuel cell technology, including early work on systems engineered for European Space Agency missions.
Offices
Tallinn, EstoniaTokyo, JapanBacked by
MercatonScaleWolfSmartCap Green Fund
Customers & Partners
Tele2Telia
Timeline
2025-11
Closed a €10 million Series A round co-led by Mercaton and ScaleWolf, with SmartCap Green Fund participating, to scale manufacturing and expand into Central Europe and North America.
2024
Generators deployed and tested during NATO Steadfast Defender 2024, the alliance's largest exercise, receiving a highly recommended evaluation from NATO's Energy Security Centre of Excellence.
2023
Initiated a €7 million funding round to accelerate commercialisation of its hydrogen generator range.
2016
Founded in Tallinn, Estonia by Ivar Kruusenberg, building on fuel cell research originally developed for European Space Agency applications.
Open Positions (5)
PowerUP Energy Technologies
Designs and manufactures hydrogen fuel cell generators for defence, telecommunications and critical infrastructure, with products battle-tested in active conflict zones and NATO exercises.
Founded 201611-50 employeesTallinn, Estonia5 open positionsWebsiteLinkedIn
Advanced Materials
Products & Solutions
UP400
A 400 W portable hydrogen fuel cell generator weighing 21 kg, designed for field personnel needing to power laptops, radios, GPS units and other personal equipment. With a noise level of 45 dB and zero emissions, it suits both off-grid civilian use and military forward positions. It can be combined with batteries, solar panels or wind turbines to form a micro-grid.
UP1K
A 1 kW portable generator delivering 1000 W at 24 V, weighing 27 kg. Designed for disaster relief operations, 5G telecoms tower backup and defence field use, it shares the same near-silent and zero-emission profile as the UP400 while providing enough power for larger communication and sensing equipment.
UP3K
A 3 kW generator, scalable to 6 kW with two cells, built for defence and security field operations. It supports remote monitoring and control via IoT, multiple battery options and grid-drop detection for automatic alarm starts. A 19-inch rack integration kit is available for indoor and outdoor installations, and the UP3K is rated for 10,000 operating hours.
UPMobile
A 10 kW trailer-mounted hydrogen fuel cell generator designed for tactical operations centres and mobile military deployments. It delivers up to 15 kW rated output, supports DC and single- or three-phase AC power, includes an integrated 6.8 kWh battery extender for instant start capability, and is rated IP54 for outdoor use. Operating life is rated at 20,000 hours.
Videos
UPMobile - Trailer Friendly Hydrogen Fuel Cell Generator
PowerUP - Heat Signature
Open Positions (5)
About
PowerUP Energy Technologies, founded in 2016 by Ivar Kruusenberg, develops and manufactures hydrogen fuel cell generators for defence, telecommunications, disaster relief and off-grid industrial use. The company is headquartered in Tallinn, Estonia, with an additional office in Tokyo, Japan, and draws on 20 years of cumulative research in fuel cell technology, including early work on systems engineered for European Space Agency missions.
Offices
Tallinn, EstoniaTokyo, JapanBacked by
MercatonScaleWolfSmartCap Green Fund
Customers & Partners
Tele2Telia
Timeline
2025-11
Closed a €10 million Series A round co-led by Mercaton and ScaleWolf, with SmartCap Green Fund participating, to scale manufacturing and expand into Central Europe and North America.
2024
Generators deployed and tested during NATO Steadfast Defender 2024, the alliance's largest exercise, receiving a highly recommended evaluation from NATO's Energy Security Centre of Excellence.
2023
Initiated a €7 million funding round to accelerate commercialisation of its hydrogen generator range.
2016
Founded in Tallinn, Estonia by Ivar Kruusenberg, building on fuel cell research originally developed for European Space Agency applications.
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