Abstract: According to various embodiments, a system for providing an environmental rating to an entity is disclosed. The system includes one or more processors configured to determine a point in time (PIT) rating. The PIT rating is determined by: receiving an entity-specific unremediated emissions amount for a predetermined period of time; receiving an entity-specific scaling measure for the predetermined period of time; receiving external cost values for each entity-specific unremediated emission; determining an aggregate external cost for the entity based on the entity-specific unremediated emission amount and each associated external cost value; determining an indicative rating ratio based on the aggregate external cost for the entity and the entity-specific scaling measure; comparing the indicative rating ratio to categories in a ratio rating table and select a rating defined by an interval into which the indicative rating ratio falls; and outputting the selected rating.