On-Site Oxygen Generator Cost & Electricity Savings for RNG Facilities
For RNG facilities, the cost of on-site oxygen is driven mostly by one input — electricity — and by how much of the oxygen you make actually reaches your process. ON2's patented plant wins on both, and every claim here is verifiable at your own meters.
Every kWh reaches your process
A conventional PSA plant consumes roughly 30–40% of the oxygen it produces just to keep running, delivering only 60–70% of rated output. ON2 plants deliver 100% of rated output — you don't pay to make oxygen the plant then consumes. On top of that, ON2 uses 20–40% less electricity than a typical PSA plant to deliver the same oxygen. Both numbers compound over the thousands of hours an RNG facility runs each year.
Fewer components, lower running cost
Conventional PSA plants typically require an air dryer to protect the sieve bed and often a pressure booster to reach usable outlet pressure — each is more equipment to power and maintain. ON2 plants need neither: full delivery pressure natively from 0 to 50 psi, and a vacuum sweep that purges heat, humidity, and contaminants every 100 seconds instead of a separate air dryer. The self-cleaning sieve bed has run 20+ years in the field without replacement, so you're not budgeting for sieve changeouts.
Own the cost, not a recurring bill
On-site generation converts recurring oxygen and chemical spend into equipment you own — purchased outright or leased-to-own over 5 or 7 years — with electricity as the main operating input. ON2 provides budgetary pricing for both ownership paths on a single quote, so you can put on-site economics next to your current supply cost.
Verify it on your meters
The savings case rests on outcomes you can measure: usable output at your flow meter, electricity at your power meter, and delivery pressure at your outlet. Every ON2 plant also ships with hospital-grade remote monitoring — purity, CO₂, temperature, and contamination alerts — and is manufactured in the USA in an ISO 13485 facility, designed to NFPA 99, with US-based support.
What's included
- 100% usable output — PSA delivers only 60–70%
- 20–40% less electricity than a typical PSA plant
- No air dryer and no pressure booster to power or maintain
- Self-cleaning sieve bed: 20+ years without replacement
- Purchase or lease-to-own over 5 or 7 years
- Made in the USA; hospital-grade remote monitoring
Frequently asked questions
What is the main operating cost of an on-site oxygen plant?
Electricity is the main operating input. ON2 plants use 20–40% less electricity than a typical PSA plant and deliver 100% of rated output, so you don't pay to make oxygen the plant then consumes — both are verifiable at your power and flow meters.
How much of the oxygen produced actually reaches the process?
All of it. ON2 plants deliver 100% of rated output. A conventional PSA plant consumes roughly 30–40% of its own oxygen to keep running, delivering only 60–70% to your process.
Are there ongoing maintenance costs like sieve replacement or air dryers?
Far fewer than a conventional PSA plant: there is no air dryer to maintain and no sieve replacement cycle — the self-cleaning sieve bed design has run 20+ years in the field without replacement.
Can we lease the oxygen plant instead of buying it?
Yes. ON2 offers lease-to-own over 5 or 7 years alongside direct purchase, so you can spread the cost into predictable payments and keep capital available for the rest of the project.
Run the numbers for your RNG facility
Send us your oxygen demand and current supply cost and we'll return an on-site plant quote — purchase or lease-to-own — with the output and electricity figures you can verify.