Human generated energy: powerlifting gyms toward net-zero carbon emissions

RE:GEN flywheel close-up






Energym’s retro-fit devices turn exercise equipment into clean renewable energy generators, reducing a gym’s energy bills with the potential to power entire neighbourhoods.


The UK has 7,000+ gyms and more than 10 million gym members.

Energym wants to put those gym rats and bunnies on wheels or rather onto static bikes, rowing machines and weights. By storing the energy generated by gym-users inside centralised batteries, Energym can harness human power as a source of clean energy.

Clean energy that then powers that individual gym and others like it, reducing energy bills and driving businesses to achieve net-zero carbon emissions.


  • Over 24-hours, a single gym could power 7.8 homes.
  • Combined, 7,038 gyms could power 38,500 homes.
  • The UK has pledged total carbon neutrality by 2050.
  • 80% of energy currently comes from non-renewable sources.


CEO Will Flint says that it was witnessing the devastating effect of coral bleaching on a diving trip to the Great Barrier Reef that led him to set-up Energym.

Based in Birmingham, this smart-tech clean energy company was created to fight climate change and to incentivise clean energy use. Backed by sportswear brand Gymshark, Energym is committed to harnessing human power as a renewable energy source.

The first commercial devices are due to be fitted in January 2020.

And they can’t come soon enough. Since Will’s return to the UK, National Geographic has reported that a staggering 50% of the Great Barrier Reef is now dead. In 2019, the UK declared a climate change emergency. Scientists now believe that climate change is “an existential threat to civilisation”.


Will Flint, CEO



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