Shallow Geothermal Energy

in Rotterdam

Ella van der Hout

Rotterdam

Public Works

Rotterdam

City: 660.000 citizens, 320 km2

Urban region: 1,2 million citizens, 808 km2

Rhine-Meuse-Scheldt delta

Largest harbour of Europe

Rotterdam

Shallow Geothermal Energy Systems

Borehole Thermal Energy System Aquifer Geothermal Energy System

Aquifer

The demand for cooling

Closed loops

Glycol

Single homes, small offices

Depth 20 to 150 m

Wells

Groundwater extraction and infitration

Storage of seasonal energy

Big offices, shopping malls, hospitals

Depth 40 to 300 m

Legislation of ATES

National Water Law 29/7/2009

• protection of groundwater users and interests

• functionality of SGES (Seasonal Performance Factor, CO2 reduction)

• registration of systems

but not:

• taking into account future interests

• detailed location of wells and pipelines

• effluent water (construction and maintenance of pumping wells)

Additonal regulations in Legislation of ATES

Provincial Groundwater Plan

• standard regulations (water temperature, no surplus of heat etc.)

• South-Holland: no ATES is first aquifer in urban areas

• procedure takes 6 months in urban areas

Legislation of BTES

AMvB Bodemenergie = governmental decree SGE

1/7/2013

• functionality of BTES (Seasonal Performance Factor)

• registration of systems

but not:

• taking into account future interests

• detailed location of boreholes and pipes

Rotterdam Climate Initiative

Goals for 2025:

• 50% reduction CO2 emission

• 100% climate proof

• reinforcing local economy

8

Long term vision for heating & cooling

• Cooperation: Ambition Agreement District Heating and Cooling

with 15 stakeholders

• Purpose: to realize together inherent and sustainable measures

for district heating and cooling

• Large-scale: Rotterdam is part of the region

• SGE is part of the solution

District heating using waste heat

heat distribution

waste heat

• 50.000 connections in 2010

• recent investments in distribution network

• connect new buildings obligatory by Rotterdam building code

transport

Distribution networks

Source: province of South-Holland

District heating planned North

District heating planned South

District heating existing

Involvement of Rotterdam with SGE

• More sustainable energy

• Sustainable use of the subsoil, limited energy storage capacity

• Awareness of future urban developments

• Best fit in public domain

Additional Regulations for BTES

Municipal decree SGE

assign interference areas = areas with lots of urban developments

in interference areas:

- no BTES under 80 m-bsl

- BTES not in public domain

if a neighbour BTES is planned

- no small BTES

if a large BTES is planned

Rotterdam City Centre

Growing number of ATES

- large buildings need cooling

- SGES counts for EPF (energy label)

ATES in Rotterdam

65 ATES systems

in Rotterdam

ATES in Rotterdam

25 in City Centre

Geothermal Energy Plan Rotterdam City Centre

Guidelines positioning pumping wells

Geothermal Energy Plan Rotterdam City Centre

Central District: search areas for cold and warm wells

Geothermal Energy Plan Rotterdam City Centre

- Spatial Planning of well locations

- Efficient use of available energy storage capacity

- Role of municipality is limited

Provincial decree to use

this plan in addition to

national and province

regulations

National

Water Law

SGE plan

Rotterdam

Provincial

Water Plan

+

+

Wate

r L

aw

Pro

ced

ure

impact assessment by initiator

permit by Province

ATES – spatial impact

T = 18 ºC

Q = 125

m3/uur

T = 6 ºC

Q = 125

m3/uur

100 m 100 m

250 m 200 m

Ø60-

100 m Ø60-

100 m

Ø800

mm

Ø800

mm

some m2 some m2

dimensions indicative!

ATES – spatial impact – example Delftse Poort

Spatial impact of SGES

Cables and pipelines

Other functions in shallow subsoil

trees, tunnels, underground parking facilities, etc.

Overground urban infrastructure

Sewage systems

effluent from construction and maintenance of pumping wells

Consulting several sections of municipality during WL procedure

22

Any questions?