1. TitleScottish Water Horizons
Energy Projects
Past Present and Future

2. Agenda
• About SW
• About SWH
• Past projects
• Current Projects
• Future areas of interest

3. Around 4,000 people
over 5 million customers
Over 1.35 billion litres
of water every day
2.5 million households
156,000 business premises
245 water treatment works
More than 1,800 waste
water treatment works
Over 60,000 miles of water
pipes and sewers
£1.2 billion turnover

4. Scottish Water and Energy
• Consume circa 0.5 TWh / annum
• Third highest opex cost
• SW hosts and self-generates twice
our consumption
• Legacy hydro schemes e.g. Loch
Turret WTW (1968)

5. Group structure
Scottish Water
SW Horizons
Holdings Ltd
SW Solutions 2
Ltd (51%)
SW Horizons
SW Business
Stream Holdings
Ltd
SW International
Ltd
SW Business
Stream Ltd

6. Title
Scottish Water Horizons
Heat from Waste Water
Ian Dunsmore
Project Manager
100% wholly owned subsidiary of Scottish Water
Separate Board
Operating on a P&L basis
Non regulated commercial activities
Conglomerate of diverse businesses
Scottish Water Horizons

7. What we do
Supplying potable water
Recycling food waste
Generating PV power
Enabling digital communications
Generating wind power
Facilitating innovation testing
Generating heat from waste water
Managing MoD water assets
Treating third party wasteSupporting new connections
Filming and TV

8. Food Waste Anaerobic Digestion
– commissioned 2010

9. 29 Live Photovoltaic Projects

10. Small scale wind turbines – 19
projects operational on SW Assets

11. Scottish Government Heat Targets
• 11% heat from renewable sources by 2020 (currently 5%)
• 80% of domestic heat supplied from low-carbon technologies
by 2032
• 94% of non-domestic buildings’ heat supplied from low-carbon
technologies by 2032

12. Over 921 million
litres of waste water
are produced in
Scotland each day
Over 31,000 miles
of sewers
(distributed heat)
across Scotland
£2.6 billion spent
each year in
Scotland on heating
and cooling
Over 50% of
Scotland’s total
energy use comes
from heat
Over 50% of
Scotland’s
greenhouse gases
result from heat
Wastewater = energy source
Sewers = heat distribution

14. SCOTTISH BORDERS CAMPUS
CASE STUDY

15. Customer benefits - SHARC Energy will provide:
• 1.8 GWh of annual heat
• GHG emissions saving of in excess of 150 tones
per year
• 20 year stable heat supply price
• Ongoing system O&M
• System SPF 4.2
Onsite construction of:
• Energy Centre
• Sewer Interface and pumping station install
• 500m of Flow return heat network,
connecting 5 plant rooms
• Plant room adaptation of college heat
distribution – connection to LLH
Off site production of equipment for install at
site:
• SHARC skid and PHX
• Heat Pumps
• Controls – software development
• Distribution pump sets
The energy centre at Borders College

16. Customer Testimonial
During our evaluation period the College wrestled with the ongoing
question, ‘Where’s the catch?’. Surely this could not be as presented,
new heating system, price certainty, no capital outlay, significant carbon
savings and no ongoing space or delivery issues to worry about. Yes
there were teething problems as you would expect with a new system
but these were overcome, Our suspicions were unfounded and we have
now been operating successfully for 18 months.
Rob Hewitt – Facilities Manager at Borders College

17. DELIVERY MODEL

20. CURRENT ACTIVE
PROJECTS

21. Bandwidth Project
• 3 Projects under 1 funding agreement:
• Leisure Centre in the Orkney Islands
• Leisure Centre in Argyll & Bute
• Art Gallery in Glasgow
• Combined CAPEX value £4m
• Demonstrates retrofit capabilities of the technology in different buildings across different geographical
areas
• Demonstrates our business model & SPV structure for public sector adoption

22. Clyde Gateway Project
• Regeneration project on the river Clyde in Glasgow
• 1.2 million ft² of retail / commercial and residential space
• Heating & cooling District Heat Network
• Fully supplied by SHARC wastewater technology
• Demonstrates our ability to provide energy to new networks and influence positive building design
• Wholesale heat sold to an ESCO to then be distributed to individual building occupiers.

23. Stirling Low Carbon Energy Project
• Installation of a CHP and SHARC
system on Stirling Wastewater
Treatment Works (WWTW)
• Biogas from site AD plant to be
used along with mains gas to
power the CHP
• Electricity from the CHP used in
the SHARC system as well as
helping to power the WWTW
• Heat sold to District Heating
Network owned and operated by
Stirling Council

24. Stirling Low Carbon Energy Project

25. Future Energy Projects
• More PV – declining
• Heat recovery – growth
• Battery – emerging
• Heat storage - ?

26. Future Projects – Battery Storage
• 500 Kw battery
• Shieldhall WwTW
• Investment based
on arbitrage
• Operational Spring
2018

27. ILES Project - Heat Storage,
Callander, Stirlingshire
• Partnership with Sc
Govt, LA, SWH
• Feasibility
• Rural fuel poverty
• Heat pump at WwTW
• Heat capture PCM
• Transfer locally

28. “We will make electricity so cheap that
only the rich will burn candles.”
― Thomas A. Edison

29. Title
Questions