reporting ghg emissions from power purchases cpuc/cec workshop on load-based reporting mike...
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![Page 1: Reporting GHG Emissions from Power Purchases CPUC/CEC Workshop on Load-Based Reporting Mike McCormick, Policy Director April 13, 2007](https://reader036.vdocuments.mx/reader036/viewer/2022070308/551c4807550346b1458b48aa/html5/thumbnails/1.jpg)
Reporting GHG Emissions from Power Purchases
CPUC/CEC Workshop on Load-Based Reporting
Mike McCormick, Policy DirectorApril 13, 2007
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Load-based Reporting FundamentalsWho
The load-serving entity (IOU, MUNI)Procurement + Schedulers
Control Area Operators
What CO2 associated with power delivery (end-users);Net-out wholesale sales
When After-the-fact; ex-post
HowCO2 from owned plants + purchases
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GHG Calculation
A Differentiated Emission Factor-based Approach: MWh x E.F. (CO2/MWh)
MWh from IOU/MUNI schedulers
E.F. tied to gen facility, if possible; if not possible then tied to either an LSE system or a Control Area system
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Universe of options to bring power to end users
Utility Owned Generation
SpecifiedPurchases
UnspecifiedPurchases
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EF Information on UOG
Not Ambiguous
Actual hourly generation available from IOUs and MUNIs for their own generating facilities.
Actual hourly generation also available from CAISO for all generation.
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Types of Power Purchases
Facility-specificQualifying FacilityIPP
UnspecifiedAsset owning entities
UtilityMerchant generatorFederal power agency
Non-asset owning entitiesPower marketersBalancing Authority
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Power can only come from one of two places
OutsideControl Area
Inside Control Area
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EF Information on intra-Control Area Purchases
QF + IPP + LSE-to-LSE
QF: PPAs. Data from IOU or MUNI
IPP: PPA and non-PPAs. Data from Control Area operator; coordinate with LSE contracts
LSE-to-LSE: Day-ahead? Data from Control Area operator; coordinate with LSE schedulers
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EF Information on inter-Control Area Purchases
Use NERC eTagsRequired for all transactions
that cross Control Areas
Shows Market Path
Shows “Physical” Path
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NERC eTags Definitions
Source: “The Initial Point of Receipt for the transaction; the actual generation facility.”
Source Control Area: “The control area in which the source (generation) is located for an interchange transaction. This is the geographic starting point of a tagged energy transaction.”
Sink: “Final Point of Delivery for the transaction: the actual load.”
Sink Control Area: “Control area in which the sink (load) is located. This is the geographic end of the tagged energy transaction.”
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NERC eTags Definitions
Generation Providing Entity: “An entity that has rights to sell energy from a generation source. …the first [entity] involved in a transaction.
Load Selling Entity: “ An entity that sell energy to load. …the last [entity] involved in a transaction.
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Conclusions
Absent a WECC-wide power tracking system, we’re left with only imperfect options to determine CO2/MWh delivered.
Re purchases, differentiate the power scheduled to the fullest extent possible and apply an emission factor.
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Contact
Mike McCormickPolicy [email protected]
California Climate Action Registry515 S. Flower Street, Suite 1640Los Angeles, CA 90071www.climateregistry.org