Specifications include, but are not limited to: Scenario 1: Virtual RNG Purchase –Fixed Price Respondent charges the University a single fixed price for the RNG, inclusive of all RNG environmental attributes, for RNG volumes Respondent delivers into the local distribution company’s gas network where the landfill, anaerobic digester, or other RNG source is located. Respondent is responsible for arranging the sale of all delivered RNG volumes into the local gas spot market or to another entity under a bilateral gas supply contract and must transfer all resulting sales revenue to the University. Respondent will not be permitted to modify its fixed price due to changes in state or federal RNG incentives owned by Respondent during the contract term.Scenario 2:Environmental Attributes Purchase –Fixed Price Respondent charges the University a single fixed price for all environmental attributes associated with RNG volumes that Respondent delivers into the local distribution company’s gas network where the landfill, anaerobic digester, or other RNG source is located. Respondent is entitled to all sales revenue Respondent can obtain from selling delivered RNG volumes into the local gas spot market or to another entity under a bilateral gas supply contract. Respondent will not be permitted to modify its fixed price due to changes in state or federal RNG incentives owned by Respondent during the contract term.Scenario 3:Retail Purchase –Fixed Price Respondent serves as the University’s retail gas supplier and charges the University a single fixed price, inclusive of all RNG environmental attributes, for all pipeline gas delivered to the Central Steam Plant in Orono, Maine(“the CSP”). Respondent must be licensed by the Maine Public Utilities Commission as a retail gas supplier. Respondent will not be permitted to modify its fixed price due to changes in state or federal RNG incentives owned by Respondent during the contract term.Scenario 4:Retail Purchase –Daily Indexed Price Respondent serves as the University’s retail gas supplier and charges the University a daily price adder, inclusive of all RNG environmental attributes, indexed to Henry Hub NYMEX pricing for all pipeline gas delivered to the University. Respondent must be licensed by the Maine Public Utilities Commission as a retail gas supplier. Respondent will not be permitted to modify its fixed price due to changes in state or federal RNG incentives owned by Respondent during the contract term.