4-46 Air

What has been Ocean State Power’s air emissions, by pollutant type as reported to the EPA, over the past ten years and how does that compare to what Invenergy projects for the Clear River Energy Center during its first ten years of operation?

RESPONSE 4-46:

 

Ocean State Power’s average nitrogen oxides (NOx) and carbon dioxide (CO2) emission rates over the past ten years, as reported to the EPA,

 have been 0.39 (NOx) and 1,458 (CO2) pounds per megawatt-hour (lb/MW-hr), respectively.  (EPA CEMS data with hourly production data can be found at https://ampd.epa.gov/ampd/.)  The average NOx and CO2 emission rates from the CREC will be approximately 0.046 and 781 lb/MW-hr, respectively.  For each MW-hr of power produced, the CREC will emit approximately one eighth (1/8) of the NOx emissions and approximately one half (1/2) of the CO2 emissions that OSP has emitted on average over the past ten years.  Although OSP is not required to report its emissions of other pollutants to the EPA, the CO2 emission rate of the CREC will be substantially lower than the emission rate from OSP on a lb/MW-hr basis, as these emissions are generally proportional to the amount of fuel fired.  Because CREC is more efficient, it will burn approximately one-third (1/3) less fuel as OSP to produce the same amount of power. 

 

RESPONDENT:

 

Mike Feinblatt, ESS Group, Inc.

DATE:

April 27, 2016