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Sustainability Assessment Methodology

Each year, ASLA will update its carbon calculation methodologies to reflect the latest data, scientific advancements, and evolving regulations, ensuring accurate and standardized greenhouse gas (GHG) reporting across industries and regions. These updates incorporate changes in energy use, fuel types, industry practices, and technological advancements.

By regularly updating these co-efficients, regulatory bodies ensure that carbon calculations remain accurate, reflecting shifts in carbon intensity, energy efficiency, and technological innovations. Globally, this process is overseen by national and international regulatory bodies such as the U.S. Environmental Protection Agency (EPA), the European Environment Agency (EEA), and the Intergovernmental Panel on Climate Change (IPCC). For example, the EPA’s eGRID database is updated annually with the latest emission factors for electricity generation in the U.S. while the EEA provides carbon co-efficients for EU member states based on energy consumption and grid performance data. Through its GHG Inventory Guidelines, the IPCC offers a global framework with standardized emission factors that countries around the world use to align their carbon calculations with the latest science.

Businesses and governments use these updated emission factors to meet regulatory compliance and international climate goals, such as those outlined in the Paris Agreement.