Last year the power company bought 20-year licences for the 28Ghz-40Ghz spectrum from the government for around £15m, shortly before the £20bn 3G licences auction.
These high frequency licences were considered low value because of the technical difficulties involved in offering viable data services.
Energis is now reviewing new millimetre wave mesh technology from Calynetworks, which may allow point-to-point connections at speeds of up to 100mbs.
Alistair Henderson, head of technology applications at Energis said: "We are evaluating the potential of IP meshed networks to extend the reach of our metropolitan fibre and deliver cost effective, reliable, broadband services."
Cees van der Stoep, vice-president of Calynetworks, said Energis' network of electricity routing stations would be a perfect match for the technology. "Energis has a big footprint and the infrastructure to exploit this technology," he said. "We expect this to offer a significant saving compared to T1 [leased line] links."
Van der Stoep said first field trials of the technology were set to begin in Sweden and Spain next year, and he predicted that services could begin by 2003.
"This is not going to replace fibre, as in the end there will be fibre everywhere," he said. "What we have is a technology that reduces cost for end users and overlays these networks as they expand." he added.
Although Energis is potentially the most likely implementer of 28Ghz services, both Corus and Telenor have purchased licences in the UK.
Calynetwork is jointly funded by several venture capital companies, including Nokia, Lucent and Siemens.