What five years of cylinder supply costs, against making the same hydrogen on site with a 2 kW water electrolysis system. Enter what you use and what you pay for cylinders.
The defaults are a standard example — 3 kg of hydrogen a month (about 6.5 47 L cylinders), high-purity cylinders at $120/kg and electricity at $0.1/kWh. Enter what you use and what you pay, and it recalculates in place. If you already hold a quotation, enter the equipment figure to see the total and the payback point.
One 47 L high-purity cylinder = 0.46 kg
$55 per 47 L cylinder works out at $120/kg
With your quoted figures
Product pricing is provided on quotation. This page contains no prices.
The replacement interval is not a fixed figure. The manual does not state stack life as a fixed number either. The calculation assumes replacement every 16,000 hours; measurement reaches 2,400 hours of continuous operation.
The defaults convert real Korean purchases into US dollars at USD 1 = KRW 1,361 (September 2026): 47 L high-purity (99.999%) cylinders bought at KRW 70,000–110,000 each, which is $120–180 per kg. We do not yet hold a primary source for US cylinder prices, so enter what you actually pay and the page recalculates in your own figures.
All figures exclude VAT and are stated in the currency you enter. Cylinder prices exclude cylinder rental and delivery. Deionised water and electrolyte are set to zero because sourcing differs by site. The comparison is against cylinder supply; we do not compare against other hydrogen generation equipment. For an actual evaluation we prepare a calculation on your own conditions.