Amount of natural gas to be purchased under futures contracts (in MMBtu)

  
Derivative Contracts at Fair Value with Offsetting Regulatory AmountsCommodity Supply and Price Risk Management:  As required by regulation, CL&P, along with UI, has capacity-related contracts with generation facilities.  CL&P has a sharing agreement with UI, with 80 percent of the costs or benefits of each contract borne by or allocated to CL&P and 20 percent borne by or allocated to UI.  The combined capacities of these contracts as of both December 31, 2021 and 2020 were 675 MW. The capacity contracts extend through 2026 and obligate both CL&P and UI to make or receive payments on a monthly basis to or from the generation facilities based on the difference between a set capacity price and the capacity market price received in the ISO-NE capacity markets.  
As of December 31, 2020, Eversource had New York Mercantile Exchange (NYMEX) financial contracts for natural gas futures in order to reduce variability associated with the price of 8.9 million MMBtu of natural gas. These contracts were classified as Level 2 in the fair value hierarchy. NSTAR Gas terminated its financial contracts swap program in April 2021.  
For the years ended December 31, 2021, 2020 and 2019, there were losses of $7.1 million, $21.2 million and $20.7 million, respectively, deferred as regulatory costs, which reflect the change in fair value associated with Eversource's derivative contracts.  
Fair Value Measurements of Derivative InstrumentsThe fair value of derivative contracts classified as Level 3 utilizes significant unobservable inputs.  The fair value is modeled using income techniques, such as discounted cash flow valuations adjusted for assumptions related to exit price.  Significant observable inputs for valuations of these contracts include energy-related product prices in future years for which quoted prices in an active market exist.  Fair value measurements categorized in Level 3 of the fair value hierarchy are prepared by individuals with expertise in valuation techniques, pricing of energy-related products, and accounting requirements.  The future capacity prices for periods that are not quoted in an active market or established at auction are based on available market data and are escalated based on estimates of inflation in order to address the full term of the contract.    
Valuations of derivative contracts using a discounted cash flow methodology include assumptions regarding the timing and likelihood of scheduled payments and also reflect non-performance risk, including credit, using the default probability approach based on the counterparty's credit rating for assets and the Company's credit rating for liabilities.  Valuations incorporate estimates of premiums or discounts that would be required by a market participant to arrive at an exit price, using historical market transactions adjusted for the terms of the contract.    
The following is a summary of Level 3 derivative contracts and the range of the significant unobservable inputs utilized in the valuations over the duration of the contracts:

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|   | As of December 31, |
|   | 2021 |  | 2020 |
| CL&P | Range |  | Weighted Average (1) |  |  |  | Period Covered |  | Range |  | Weighted Average (1) |  |  |  | Period Covered |
| Capacity Prices | $2.61 |  | $ | 2.61  |  |  | per kW-Month |  | 2025 - 2026 |  | $ | 4.30  |  |  | — |  | $5.30 |  | $ | 4.63  |  |  | per kW-Month |  | 2024 - 2026 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Forward Reserve | $ | 0.50  |  |  | — |  | $1.15 |  | $ | 0.82  |  |  | per kW-Month |  | 2022 - 2024 |  | $ | 0.54  |  |  | — |  | $0.90 |  | $ | 0.72  |  |  | per kW-Month |  | 2021 - 2024 |

  
(1) Unobservable inputs were weighted by the relative future capacity and forward reserve prices and contractual MWs over the periods covered.  
Exit price premiums of 5.0 percent through 9.3 percent, or a weighted average of 8.2 percent, are also applied to these contracts and reflect the uncertainty and illiquidity premiums that would be required based on the most recent market activity available for similar type contracts. The risk premium was weighted by the relative fair value of the net derivative instruments.  
Significant increases or decreases in future capacity or forward reserve prices in isolation would decrease or increase, respectively, the fair value of the derivative liability.  Any increases in risk premiums would increase the fair value of the derivative liability.  Changes in these fair values are recorded as a regulatory asset or liability and do not impact net income.    
The following table presents changes in the Level 3 category of derivative assets and derivative liabilities measured at fair value on a recurring basis.  The derivative assets and liabilities are presented on a net basis.

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |
| CL&P(Millions of Dollars) | For the Years Ended December 31, |
| 2021 |  | 2020 |
| Derivatives, Net: |   |  |  |
| Fair Value as of Beginning of Period | $ | (293.1) |  |  | $ | (329.2) |  |
| Net Realized/Unrealized Losses Included in Regulatory Assets | (8.5) |  |  | (17.9) |  |
| Settlements | 52.4  |  |  | 54.0  |  |
| Fair Value as of End of Period | $ | (249.2) |  |  | $ | (293.1) |  |

  
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