Integrated Energy Systems
REsponsive FLEXibility - an energy system of the future. Integrated Energy Systems linking the flexible operation of electricity, transport & heat networks to provide affordable power and balance & manage the grid locally.

Project Information

ReFLEX – Responsive Flexibility – is widely regarded as an energy system of the future and will be demonstrated in Orkney by a consortium of six locally-based partners.

  • April 2019 – The first phase of a new £28.5 million project to create an Integrated Energy System (IES) in Orkney, Scotland, was launched to digitally link distributed and intermittent renewable generation to flexible demand
  • The ReFLEX Orkney project will demonstrate a first-of-its-kind IES interlinking local electricity, transport, and heat networks into one controllable, overarching system
  • The creation of a ‘smart energy island’ is the ultimate aim of the project, demonstrating the energy system of the future, reducing and eventually eliminating the need for fossil fuels
  • The project is funded by UKRI through the Industrial Strategy Challenge Fund
  • ReFLEX Orkney Ltd and the ReFLEX website was launched in December 2020

This brilliant news is built on the high level of collaboration between enabled communities and energy innovators in Orkney. A successful partnership that has started to show how we can supply and manage local energy in a more sustainable and equitable way, and, with this project, we all have an outstanding opportunity to further test and develop the new, fairer, and better future models of ownership and value systems pioneered by communities like those in Orkney

Nicholas Gubbins, CEO of Community Energy Scotland

At the heart of the project is the demonstration of flexible energy balancing technologies. For example, the project aims to deploy:

  • Up to 500 domestic batteries
  • Up to 100 business and large-scale batteries
  • Up to 200 Vehicle-to-Grid (V2G) chargers
  • Up to 600 new electrical vehicles (EVs)
  • An island community-powered electric bus and e-bike integrated transport system
  • Up to 100 flexible heating systems


A FlexiGrid software platform, newly designed by one of the partners, will be put into effect, enabling smart monitoring and control of the flexible technologies to charge during periods of peak local renewable generation, and release stored energy during times of peak demand.

These technologies will be introduced under attractive leasing-type finance and novel ways of ownership with the aim of the end user avoiding major capital investment – this will include individuals and local organisations.

This pioneering project will help Orkney maximise the potential of its significant renewable generation capabilities, help to ensure higher quality and more affordable energy services, as well as further lowering the county’s carbon footprint by decreasing reliance on imported carbon-intensive grid electricity from the UK mainland.

“We need cheaper, cleaner and flexible energy and Orkney will be at the heart of this.

“We all need energy systems that are cheaper, cleaner and consumer-friendly. We have a great opportunity with the ReFLEX project to show just how innovation can deliver this energy ambition for the future. Supported by the Industrial Strategy Challenge Fund, ReFLEX can drive investment, create high-quality jobs and grow companies with export potential,”

Rob Saunders, Deputy Challenge Director, Prospering from the Energy Revolution, UK Research and Innovation

Once demonstrated and proven in Orkney, it is expected that the IES model and associated integrated energy service supply framework will be reproduced in other areas across the UK and internationally, building long term export opportunities for the ReFLEX project partners and helping to expand the flexible and renewable-based energy systems.

Keep up to date on our News page

ReFLEX Partners

 “What we are seeing here on Orkney is a test bed for the energy system of the future. These smart systems are a key part of our modern Industrial Strategy and will provide cheaper, greener and more flexible access to energy for everyone. What we learn from these innovations could one day be rolled out across the UK and exported around the world and we’ll be able to say it was ‘Made in Orkney’,”

Claire Perry, Energy and Clean Growth Minister 2017-2019

Update: The ReFLEX project drew to a close on 31 March 2023.

The ReFLEX project has resulted in many significant changes for Community Energy Scotland, the project partners, and the Orkney communities as a whole. The partnership collaboration, along with the funding from the UK Government’s Prospering from the Energy Revolution (PfER) fund, enabled multiple successes during the last 4 years.  In addition to the overarching achievement from all the partners, CES was able to build upon local efforts to shift the transport sector towards zero emissions with the expansion of electric vans and bikes on four of the islands, and support the growth of a fully electric car club.  Our support to homeowners in Orkney included the rollout of over 100 energy monitor, to allow access to real-time data on how people are using energy within their home, together with work where we assessed the project’s customer offerings to be as inclusive as possible. CES is grateful for the opportunities presented through the project’s funding, and has already begun building upon the results and learnings achieved as a result of it.

Watch the YouTube video here for the detailed outcomes and lessons learned.

Other Projects