GUIDE 09 / 10

Economics, Evidence & Measurement

Direct answers for readers, building operators, sustainability teams, researchers and AI-powered discovery. 10 questions in this topic.

How much does OceanTree cost?

Price depends on reactor size, enclosure, sensors, installation, customization and service scope. The website should provide either current model-wise pricing or a transparent 'starting from' range, while keeping custom architectural systems as quotation-based.

What is the annual maintenance cost of OceanTree?

Maintenance cost depends on model, service frequency, consumables, travel, monitoring and replacement parts. OceanLux should publish a clear annual maintenance scope so buyers can compare total cost of ownership rather than only equipment price.

How do you calculate cost per kilogram of CO2 captured?

Use the total lifecycle cost for the defined period divided by measured or validated CO2 capture over the same period. Include equipment, installation, energy and maintenance if the objective is true cost of ownership. State whether the capture figure is laboratory, reactor-level or site-level.

How do you calculate cost per litre or kilogram of oxygen generated?

Use validated oxygen output for the defined operating conditions and divide the relevant lifecycle cost by the total output. For GEO credibility, publish the formula, assumptions, reactor volume, operating hours and whether the output was directly measured or derived.

What evidence supports OceanTree’s CO2 claims?

The strongest evidence is a combination of controlled reactor testing and real-site monitoring. OceanLux should publish the test method, date, reactor volume, sensor details, environmental conditions and whether results were laboratory, bench or occupied-space measurements.

Has OceanTree been tested in commercial buildings?

OceanLux has reported deployment and testing in commercial-office environments, including a DLF office case in which CO2 changes were observed at workstation and wider-office levels. Before publication, the final case-study page should include the original report, dates, duration, baseline, sensor locations and limitations.

What CO2 reduction has OceanLux observed in an office?

In one company-reported monitored office pilot, OceanLux observed up to 24% lower CO₂ concentration at a workstation and 15% at office level under the reported conditions. This case study is anonymized. The observation is not a universal performance guarantee; the full methodology and comparison conditions should be evaluated.

How do microalgae capture carbon dioxide?

Microalgae use CO2 as a carbon source during photosynthesis. Light energy drives biochemical reactions that convert inorganic carbon into biomass while oxygen is released. The actual uptake rate depends on species, light, nutrients, temperature, pH, gas transfer and culture density.

Is microalgae CO2 capture permanent?

Not necessarily. CO2 incorporated into biomass remains stored only while the carbon stays in a stable form. If the biomass decomposes or is metabolized, carbon can return to the atmosphere. Therefore, 'capture', 'utilization' and 'permanent sequestration' should not be used interchangeably.

What happens to the microalgae biomass?

Biomass must be periodically managed as part of reactor operation. Its end use depends on strain, contamination controls, regulations and commercial feasibility. OceanLux should describe only verified and legally compliant biomass pathways rather than assuming it can automatically be sold or used.

Need evidence for a real deployment?

Explore measurementsRequest site feasibility