Open Energy Efficiency Savings (OpenEnEffs) is a project adapting and extending the existing US open source CalTRACK methodology for quantifying avoided energy use, by combining smart meter data, weather feeds and information on energy efficiency interventions.

The UK energy efficiency industry is currently held back by the lack of a standardised, open methodology to quantify the impact of energy and carbon saved by specific measures. We believe that the implementation of such a standard will open up new business models, providing financial institutions with the confidence to invest based on measurable long-term savings and the opening up additional revenue streams.

In the first instance the software will be used to track the impact of retrofit measures over time, drawing in additional data inputs from other Carbon Coop services in order to tackle some perennial issues, such as accurately quantifying comfort take-back and rebound effects and removing non-heating loads (such as electric vehicles) from the core data set. All software developments will be fed back into the community and licensed under an open source license.

The project is funded by UK Research and Innovation (UKRI) from July 2022 as part of the SBRI ‘Open Digital Solutions for Net Zero Energy’ competition.