EcoFlow's marketing is brilliant, and it was born in portable power stations. KSTAR has spent 30 years building UPS for hospitals and data centres: the reliability a home — on-grid or off-grid — demands cannot be improvised.
✓ KSTAR wins on: traceable CATL/EVE cells, <10 ms UPS backup, critical heritage, certified cycles and listed backing30 years building UPS for data centres, hospitals and infrastructure where an outage is unacceptable. Global top 5 in UPS (Omdia), 4th year running. 3 million UPS/year.
Founded in 2017 as a consumer portable-battery maker (River, Delta). Its first fixed residential system, PowerOcean, dates from 2023.
CATL / EVE cells proven through a public $150M joint venture with CATL: you know exactly what's inside the cabinet.
Does not systematically publish which cell manufacturer goes into each batch. In a battery, the cell is 60% of the cost and 90% of the risk.
Switch to battery in <10 ms, inherited directly from UPS engineering: not even a computer blinks. Proven in critical infrastructure for decades.
Offers backup, but without UPS heritage: the maker cannot point to decades of critical switchover nor equivalent UPS-grade switching specs.
IP65 with anti-corrosion treatment: terrace, patio or finca, with marine salt air, rain and dust. Built to live outdoors in the Balearics.
IP65 as well, but with barely a couple of years of outdoor residential fleets installed: its 10–15 year behaviour simply doesn't exist as data yet.
5,300 certified cycles (over 14 years of daily use), 5-year product and 10-year performance warranty, from a Shenzhen-listed manufacturer (002518) since 2010.
A 15-year battery warranty on paper — excellent — but signed by a private company founded in 2017: half that warranty exceeds the company's own age.
The heart of our off-grid installations in Mallorca: where there is no grid, UPS switchover and a traceable cell are everything. The most reliable system we install.
Aimed at self-consumption with grid backup. For an off-grid home that depends 100% on the system, its track record is still too short.
We are a certified SolarEdge installer and official KSTAR distributor in the Balearics. We'll prepare a personalised study, no strings attached.
Request your free study →proyectos@uep.solar · 871 24 21 02
