GAS AND
FUEL OIL

LET’S GET STARTED
WHERE ARE WE NOW?

Scottish Water and its PFI partners use 199GWh of gas and fuel oil per year.

The majority of the gas is used in the thermal drying and processing of wastewater sludge.

Fuel oil is used for standby generation of power at our assets in the event of power supply problems.

The remaining gas is used for heating in our buildings.

This leads to 38ktCO2e per annum.

Bar chart

2019/20 POSITION

199GWh
PER YEAR

GAS AND FUEL
OIL USED

TOP 4 CONTRIBUTORS TO GAS AND FUEL CONSUMPTION

61%

WASTEWATER SLUDGE
DRYING AT DALDOWIE

5%

SLUDGE PROCESSING
AT SEAFIELD

11%

STANDBY
GENERATION

3%

HEATING
BUILDINGS

OUR APPROACH

MAXIMISE ENERGY
RECOVERED FROM
BIORESOURCE

REDUCE
CONSUMPTION
OF FUEL OIL

REDUCE USE
OF GAS

These tables illustrate the key activities we are
exploring to reduce our gas and fuel oil emissions.

We will keep these under review
with our expert advisory panel.

These tables illustrate the key activities we are
exploring to reduce our gas and fuel oil emissions.

We will keep these under review with our expert advisory panel.
Maximising the energy we recover from bioresource

UP TO

2025

• Consider rationalisation of buildings post COVID-19.

UP TO

2030

UP TO

2040

• Identify, assess and implement activities to replace sludge drying technology and alternatives to gas for sludge processing.

• Delivery of new solution at Daldowie to maximise value of bioresource.

• Maximise renewable generation from bioresource.

• Identify, assess and implement activities to maximise value of bioresource at returning PFI assets.

• Identify, assess and implement alternative technologies to replace standby generation on our assets (e.g. battery power).

• Complete implementation
of alternative technologies
to replace standby generation on our assets.

• Identify, assess and implement renewable heat sources for our buildings.

• Complete implementation of renewable heat sources for our buildings.

• Deliver Juniper House refurbishment as a net zero emissions building.

Maximising the energy we recover from bioresource

UP TO

2025

• Consider rationalisation of buildings post COVID-19.

• Identify, assess and implement activities to replace sludge drying technology and alternatives to gas for sludge processing.

• Identify, assess and implement alternative technologies to replace standby generation on our assets (e.g. battery power).

• Identify, assess and implement renewable heat sources for our buildings.

• Deliver Juniper House refurbishment as a net zero emissions building.

UP TO

2030

• Delivery of new solution at Daldowie to maximise value of bioresource.

• Identify, assess and implement activities to maximise value of bioresource at returning PFI assets.

• Complete implementation of alternative technologies to replace standby generation on our assets.

• Complete implementation of renewable heat sources for our buildings.

UP TO

2040

• Maximise renewable generation from bioresource.

INNOVATION
CHALLENGES

DEVELOP ALTERNATIVE FUEL
FOR SLUDGE PROCESSING

DEVELOP ALTERNATIVE TECHNOLOGIES
TO STANDBY GENERATION

DEVELOP ZERO
EMISSIONS BUILDINGS

INNOVATION
CHALLENGES

DEVELOP ALTERNATIVE FUEL FOR SLUDGE PROCESSING

DEVELOP ALTERNATIVE TECHNOLOGIES TO STANDBY GENERATION

DEVELOP ZERO EMISSIONS BUILDINGS

INNOVATION
CHALLENGES

DEVELOP ALTERNATIVE FUEL
FOR SLUDGE PROCESSING

DEVELOP ALTERNATIVE TECHNOLOGIES
TO STANDBY GENERATION

DEVELOP ZERO
EMISSIONS BUILDINGS

KEY ENABLER TO SUPPORT REDUCING
GAS AND FUEL OIL EMISSIONS

DECISION MAKING
Building emissions into our
decision making processes

EXTERNAL FACTORS THAT SUPPORTS
REDUCING GAS AND FUEL OIL EMISSIONS

UK GAS NETWORK TRANSITION

from natural gas to biomethane
and hydrogen for heating

INTRODUCTION

TRANSFORMATION

REDUCING
EMISSIONS
SUPPORTING A
FLOURISHING SCOTLAND

ELECTRICITY

PROCESS
EMISSIONS

GAS &
FUEL OIL

TRANSPORT
& TRAVEL

INVESTMENT

STORING
CARBON

CASE STUDY

HVO Use in Construction

Scottish Water has established a framework for the supply of sustainably sourced hydrotreated vegetable oil that can be used by both Scottish Water and its construction partners. It’s a drop in fuel replacement that reduces emissions by 90% compared to conventional diesel.

Over the last year it has been widely adopted by our construction partners, displacing diesel use in excavators, cranes and other heavy plant. It is also being used to fuel generators to provide power for remote construction sites.

On our water mains rehabilitation programme its adoption is expected to reduce emissions by nearly 30%.

CASE STUDY

Douglas Park Community Consultation in Dundee

Scottish Water has been a partner in a project, led by the local community and supported by the National Lottery’s Community Fund, to regenerate the site once occupied by Douglas Primary School as a multi-functional greenspace.

Our team worked with the community to incorporate sustainable drainage features in the new park, which store and slowly release the rainwater that falls on surrounding roads and rooftops during storms. This eases pressure on the combined sewer network in the local area, as well as helping to protect the local environment and reduce flood risk from the Dighty Burn. Importantly, the community has been able to realise its wider aims by creating an attractive outdoor space that also provides a home for wildlife; and can be enjoyed for play, relaxation, exercise, events and the growing of food.

Planning is now underway to introduce more sustainable water management measures in the area surrounding the park, with the aim of disconnecting over 40,000m2 of land area from the combined sewer network; and helping to enable the development of more social housing in Douglas. Engagement with the community, including schools and other key stakeholders, is being carried out to help shape the proposals.

Work with the community and Dundee City Council on sustainable drainage for Douglas has helped to inspire the Water Resilient Dundee partnership. This initiative is now pursuing opportunities for more sustainable management of stormwater across the city, reducing flood risk in communities, creating capacity for development and enhancing amenity.