The Department's electric restructuring regulations require competitive suppliers to disclose the following information to customers: (1) regional average fuel characteristics; (2) certain applicable emission rates; and (3) regional average labor characteristics. 220 C.M.R.§11.06. Suppliers should use the information provided below in preparing their information disclosure labels.

Regional average fuel mix characteristics
Representative Emission rates
Regional average labor characteristics

Regional Average Fuel Mix

January 1 through December 31, 2000
Provided by ISO New England Inc.

POWER SOURCESpecified Sources

* - May not equal sum due to rounding


  1. The estimated fuel mix is broken out into Power Source categories as listed in the Commonwealth of Massachusetts Department of Telecommunications and Energy (DTE) Order DPU/DTE 96-100 (issued 2/20/98) Attachment A 220 CMR 11.06 (2)(d)(4.B) (effective 3/1/98).
  2. The above information reflects "estimates of actuals" based on historical monthly energies generated from NEPOOL sources as reflected in ISO New England's Monthly Settlement Reports. These reports are subject to change due to audit and resettlement.
  3. Imported Power reflects the aggregate purchases from New York, New Brunswick, and Hydro-Quebec. Power sales out of NEPOOL are not included/reflected.
  4. The breakdown for the large and small hydro units (30 MW breakpoint) is based on each unit's "Winter Seasonal Claimed Capability (WSCC)" as reported in the December 1 st, 2000 publication of the ISO New England Seasonal Claimed Capability (SCC) Report.
  5. Pumped storage generation is included in the large hydro section. Pumping load is not included.
  6. Dual fuel generating units, those capable of burning either oil or natural gas, have had their monthly energies categorized using the assumption that during the summer ozone period, May 1 st through September 30 th, all generation was fueled by natural gas. Correspondingly, during the non-ozone periods of January 1 st through April 30 th and October 1 st through December 31 st, the assumption is that all generation was fueled by oil.
  7. Estimated generating unit energies may not reflect small amounts of start-up fuel.
  8. The specified sources represent a NEPOOL estimated average rather than the New England estimated average.

Representative Emission Rates, 1998

Provided by MA. Department of Environmental Protection

Emission Rate CategoryCO 2 NO x SO 2
New England1,1191.85.3
New Units7600.060.02

Source: 1998 calendar year based on the Emission and Generation Resource Integrated Database, which is a comprehensive source of data on the environmental characteristics of all electric power generated in the United States. This database is maintained by the United States Environmental Protection Agency and the Energy Information Administration (an agency within the Department of Energy).

Regional Average Generation Resource
Labor Characteristics

January 1 through December 31, 1998
Provided by ISO New England Inc.

Generating WorkforceOutput (MWH)%
Collective Bargaining75,762,091.576%
Non-Collective Bargaining23,382,899.424%


ISO New England does not have the information to determine, on either an individual or aggregate basis, any type of labor disputes statistics.

The determination of which generating facilities workforce were designated "Union" versus "Non-union" was performed in consultation with representatives from the International Brotherhood of Electrical Workers (IBEW) and ISO New England staff. ISO New England assumes no responsibility for ensuring the accuracy of the designations or the consequences of any errors.

The NEPOOL generation resource labor characteristics percentages are based on the NEPOOL aggregate generating unit energies reported for the period January 1, 1998 through December 31, 1998.

The above numbers reflect "estimates of actuals" based on the generating unit energies shown in the ISO Settlements monthly reports. These reports are subject to change due to audit and resettlement.

Estimate NEPOOL generating resource labor characteristic percentages are based on the 1998 energies generated from NEPOOL generation resources and do not include pumping load or the net of Purchase & sales with New York, New Brunswick and Hydro-Quebec.

The total 1998 generating unit energies reflects only units claimed for capability and do not include generation netted from load (approximately 200 MW).

This information is provided by the Department of Public Utilities

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