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Scottish Water Horizons Delivering innovation in the Hydro Nation. Fraser Purves Commercial Manager. Who are Scottish Water Horizons. An overview… Owned by Scottish Water Self funded Leveraging value of Scottish Water assets Identifying commercial opportunities
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Scottish Water HorizonsDelivering innovation in the Hydro Nation • Fraser Purves • Commercial Manager
Who are Scottish Water Horizons An overview… Owned by Scottish Water Self funded Leveraging value of Scottish Water assets Identifying commercial opportunities Contributing to Scottish Water’s renewable objectives Supporting Scotland’s growth agenda What we do…
The energy challenges • The scale of the challenge currently being • faced by SW: • Largest energy consumer within Scotland • £40m per annum energy bill • Reducing SW’s carbon footprint The Scottish Water Vision…
Horizons hydro programme • The hydro potential • SWH hydro investment into the asset • SWH hydro programme • A crucial part of the SWH programme is the Difgen… a new turbine technology
What is a Difgen? • An alternative turbine technology • A water turbine that combines: • Pressure reduction + flow control • Power generation by harvesting the energy from the resulting pressure drop • Installed within potable water distribution networks • The Difgen concept was developed by Zeropex
The heart of the Difgen… the techy bit Hydro power from fluid pressure • A positive displacement rotary lobe pump running in reverse to act as a turbine • How does it work? Differential pressure created by the braking force load applied from the grid Retards the rotational speed Allows either flow or pressure control
Denny Difgen… a first in Scotland The facts In line between Carron Valley WTW to Quarter BPT 2 No. Duty models installed with an output of 100kW Energy produced; 600 MWh per annum… enough to power 150 homes Investment at £800k Return on investment Annual income estimated at £147k Anticipated payback of 6 years
What are the benefits? • The asset base can be fully exploited for renewable energy • The scale of the Difgen opportunity... 3,500 PRVs in SW asset base • Pan Scotland Difgen programme kicked off with first 20 sites… estimated to produce 15,000MWh… enough to power 4,000 houses • Benefits to SW and our customers
Closing thoughts… a positive contribution to generating green energy • Finally, I want to leave you with these key messages: • The Difgen technology supports SW vision of becoming a low carbon water company • The Difgen is an enabler for: • Smart leakage management • Reducing carbon footprint • Ultimately reducing the electricity bill • Thank you