Lower Power Costs

Power supplied from conventional sources to LI-COR’s greenhouse gas analyzer systems results in the production of as few as 107 kg (GHG-1, 20 W nominally) or 187 kg (GHG-2, 35 W nominally) of CO2 per year. By contrast, instruments that use Cavity Ring Down Spectroscopy (CRDS) and Integrated Cavity Output Spectroscopy (ICOS) require about 600 W of power and result in over 3200 kg of CO2 emissions per year during continuous monitoring in eddy covariance flux applications. This corresponds with energy costs of $19-$34 per year for LI-COR systems and $574 or more per year for competing systems, based on average electricity costs per kWh in the U.S. For sites without access to main line power the cost to operate ICOS or CRDS systems on diesel fuel can be over $10,000 annually.

The LI-COR greenhouse gas (GHG) analyzer systems are designed to operate at ambient outdoor temperatures with power from a basic solar/battery system, while providing robust data sets with minimal user intervention. They provide the lowest power costs and smallest carbon footprint of all 3-gas systems available.

LI-COR GHG-1
System
LI-COR GHG-2
System
WS-CRDS
Instruments
ICOS
Instruments
Power Consumption≈ 20 W≈ 35 W≈ 600 W≈ 600 W
Carbon Footprint≈ 107 kg/year≈ 187 kg/year≈ 3200 kg/year≈ 3200 kg/year
Main-Line
Power Costs
19 USD/year34 USD/year574 USD/year574 USD/year
Diesel Fuel Costs  ≈ 10,000 USD/year≈ 10,000 USD/year
methane-power-map

Methane-emitting ecosystems tend to occur in regions that lack easy access to AC power. This complicates measurements of methane flux. The LI-7700 is designed for DC (battery and solar panel) operation in remote areas and extreme environments. This provides you the freedom to take the instruments wherever you want to measure, without being constrained by power requirements.


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