The recognition was earned for its E-STOR product, which re-purposes used electric vehicle battery packs to store and distribute power from renewable, allowing optimisation of generation and use.
"This accolade from our peers underlines the significant role that E-STOR can play in our transition to a low carbon future," states Matthew Lumsden, managing director of FTS.
FTS developed E-STOR in response to growing demand for 50kW rapid charging stations for electric vehicles (EVs).
Installing E-STOR systems is proving a cost-effective way to upgrade the national grid and delivers on several sustainability objectives.
It provides a viable second life for EV batteries while simultaneously improving the business case for rapid chargers and electric vehicles.
Organised by the Renewable Energy Association (REA), this was the tenth iteration of the awards, which this year took place at the Savoy hotel in London.
FTS, which is based in Newcastle upon Tyne and has offices in Bawburgh, Norfolk, was one of seven entrants shortlisted for the innovation category.
The company was part of the EVEREST consortium that received £3.7 million from DECC (the Department for Energy and Climate Change) to produce a proof of concept system.
This installation is now successfully operating at the Lotus Cars factory in Norfolk.
FTS has set up a subsidiary, Connected Energy to commercialise E-STOR. Connected Energy is on track to install the first E-STOR production models in early 2016.