Degree Days

Free degree-day data and information from Degree Days Direct Ltd.

Degree-day figures quantify how cold (or hot) the weather has been in a given region, expressing the result as a single index number for each month or week. They can be used to:

• Expose abnormal seasonal patterns of consumption.
• Detect exceptional consumption caused by faults.
• Set and track fuel budgets.
• Normalise the performance of different buildings to a common basis for comparison purposes.
• Verify and quantify the savings achieved by energy-saving measures after allowing for weather variations.
• Extrapolate annual consumption from a limited period of monitoring.