The Oregon CPP Compliance Calculator is a tool designed to help users estimate their total CCI (Compliance Credit Instrument) spends and plan their compliance obligations across the lifetime of Oregon’s Climate Protection Program. The Oregon Climate Protection Program establishes a declining cap on emissions that progressively tightens over time, requiring covered entities to evaluate long term compliance cost exposure and procurement planning strategies. As the program transitions across multiple compliance periods, entities must assess how emissions trajectories, allocation levels, and use of Community Climate Investment Credits influence total compliance expenditure. The Compliance Calculator provides a structured approach to estimate future compliance costs by translating emissions projections into required volumes of Compliance Credit Instruments. By providing a forward looking framework, the calculator allows regulated entities to better understand how emissions reduction pathways influence cumulative compliance obligations under the program’s declining cap structure. The ability to estimate compliance costs across the program lifetime supports internal financial planning, procurement strategy development, and evaluation of emissions reduction investment decisions. It is split into two modules—Fuel Supplier and Natural Gas—reflecting the distinct allocation rules and compliance dynamics specific to each entity type. Fuel suppliers represent one of the primary covered sectors under the Oregon Climate Protection Program, with compliance obligations driven largely by lifecycle emissions associated with transportation fuels supplied into the state. Emissions reduction pathways for fuel suppliers are influenced by adoption of renewable diesel, changes in fuel demand patterns, and the gradual increase in electric vehicle uptake, all of which affect emissions intensity of supplied fuels. The Natural Gas module reflects the compliance structure applicable to local distribution companies that supply natural gas within the state. Emissions trajectories for natural gas utilities may evolve differently compared to fuel suppliers, as emissions reductions are influenced by consumption patterns, infrastructure characteristics, and efficiency improvements over time. The separation of modules allows users to apply sector-specific assumptions that reflect differences in emissions profiles, allocation methodologies, and decarbonization pathways across covered entities. The Oregon CPP Compliance Calculator is a tool designed to help users estimate their total CCI (Compliance Credit Instrument) spends and plan their compliance obligations across the lifetime of Oregon’s Climate Protection Program. By enabling users to estimate cumulative Compliance Credit Instrument requirements, the calculator supports scenario evaluation across multiple emissions trajectories and compliance strategies. Users can evaluate how different assumptions regarding emissions reductions influence the total volume of Compliance Credit Instruments required for compliance over time. This allows covered entities to understand how changes in operational decisions, fuel mix adjustments, or demand patterns may influence long term compliance expenditures. The calculator provides visibility into how allocation declines over successive compliance periods translate into increasing reliance on Compliance Credit Instruments, thereby influencing procurement timing and cost exposure across the duration of the program. It is split into two modules—Fuel Supplier and Natural Gas—reflecting the distinct allocation rules and compliance dynamics specific to each entity type. The differentiation between modules ensures that compliance cost estimation reflects the structural design of the Oregon Climate Protection Program, where allocation approaches vary across sectors and emissions reduction opportunities evolve at different rates. By providing a structured framework for estimating Compliance Credit Instrument requirements across both modules, the Compliance Calculator supports strategic planning for regulated entities seeking to manage long term compliance costs within the Oregon Climate Protection Program. The resulting outputs allow users to evaluate expected Compliance Credit Instrument expenditures across the lifetime of the program, providing insight into potential cost exposure and enabling more informed compliance planning decisions under Oregon’s declining emissions cap framework.