Carbon exchanges are platforms where carbon credits are bought and sold. These exchanges facilitate the trade of carbon allowances or credits and set the market price based on supply and demand. Examples include: European Union Emissions Trading Scheme (EU ETS): One of the largest compliance markets, where EU companies trade carbon allowances. California Cap-and-Trade Program: A compliance market for California that links with other regional markets. Regional Greenhouse Gas Initiative (RGGI): A U.S.-based cap-and-trade system for power plants in the Northeast and Mid-Atlantic states. These exchanges ensure the smooth operation of trading, settlement, and credit retirement, with a focus on preventing fraud and double counting.

Carbon credits must be verified and registered in recognized standards and registries to ensure credibility and transparency. Common standards include: Verified Carbon Standard (VCS): One of the most widely used standards in the voluntary market, offering a framework for quantifying, monitoring, and verifying carbon credits. Gold Standard: A premium standard that ensures credits provide environmental and social benefits alongside carbon offsetting. Clean Development Mechanism (CDM): A mechanism under the Kyoto Protocol that allows industrialized countries to earn carbon credits by investing in emissions-reduction projects in developing countries. American Carbon Registry (ACR): A leading U.S.-based registry for carbon credits, particularly in North America.

Carbon credit prices are determined by supply and demand within the market. Key factors influencing prices include: Government regulations: In compliance markets, the scarcity of credits (due to stricter emission caps) can drive up prices. Market demand: The demand for carbon credits increases when companies or countries are close to reaching their emission reduction targets. Project quality: High-quality credits from verified projects, which provide substantial and permanent emission reductions, generally command higher prices. Market liquidity: A more liquid market, with many participants, usually results in more competitive pricing.