The following modelling systems are available under an Open Source licence.

BuildAX, configuration of pervasive sensors for use with EnTrak

EnTrak, an energy monitoring and targeting tool.

Merit, a renewable energy planning tool.

ESP-r, an integrated building/plant simulation tool.

HUE, for housing estate energy rating and upgrade strategy formulation.

Adept, for domestic scale control systems performance appraisal.

IDEAS, a domestic heating/cooling system control test environment.

MGTrading, for assessing the feasibility of trading between micro grids.

BioSim, for biomass heating system design.

POET, for Post Occupancy Evaluation monitoring.

SmartHomes, for the delivery of energy-related services to homes via the Internet.

EKS, for the generation of energy programs of differing functionality.

IIBDS, for the construction of intelligent interfaces to co-operating applications.

Miscellaneous programs, including a CHP appraisal tool, a Ventilation estimation tool and a fenestration definition tool.

In each case, the system source code and/or binaries may be directly downloaded (or, in the case of ESP-r, acquired via a source code control system). To encourage best practice application of the tools, regular training courses are offered. Courseware is also available as part of undergraduate and postgraduate programmes.

Several additional resources are also available, including a glossary, application case studies, user information and theoretical descriptions.