A representative from the Network for Sustainable Hydropower Development for Mekong Region with the support of MRC-GIZ Cooperation Programme gave a presentation on hydropower siting, design, and operations in a changing climate.

1. Hydropower
Si,ng,
Design
and
Opera,ons
in
a
Changing
Climate
Dondej
Tungtakanpoung,
PhD.
dondejt@yahoo.com

2. Module 3
Module 2
Module 4
Module 5
Module 6Climate Change and Hydropower Management

3. Hydropower
Si,ng,
Design
and
Opera,ons
in
a
Changing
Climate
(for
2015
Greater
Mekong
Forum
on
Water,
Food
and
Energy)
Dondej
Tungtakanpoung,
PhD.
dondejt@yahoo.com
Session
1
Range
of
Si,ng,
Design
and
Opera,ons
Op,ons
Session
4
Planning
Resilient
Hydropower
under
Uncertainty

4. WHAT
ARE
THE
MAIN
SITING
OPTIONS
IN
A
HYDROPOWER
SYSTEM?
WHAT
ARE
THE
MAIN
DESIGN
OPTIONS
FOR
A
HYDROPOWER
STATION?
WHAT
ARE
THE
MAIN
OPERATIONAL
OPTIONS
FOR
A
RESERVOIR
HYDROPOWER
STATION?
HOW
ARE
CHOICES
AMONGST
THESE
OPTIONS
INFLUENCED
BY
CLIMATE
CHANGE?
Session
3.1
Range
of
Si,ng,
Design
and
Opera,ons
Op,ons
Overview
Session
3.1.

5. Important
aspects
for siting
How large is the
overall expected
power demand?
Which reaches or
tributaries have
the best
conditions
Are there any
factors that
exclude reaches
or tributaries
from?
Is there a choice
between building
one large station
instead of several
small projects?
Can stations
support each
other in their
operations?
What other water
uses besides
hydropower exist
in the area?

6. 6
Si,ng
within
a
Basin

7. 7
Hydropower
Project
Op,on
A

8. Cascade
Arrangements
Which sites? How many sites?

9. Project
idea
Forma<on
Layout
Engineering
Design
Cost
es<mate
Economic
and
Financial
analysis
Bankable
Project
Optimization of
project layout

10. Major
Design
Op,ons

11. Module
3.
Hydropower
Si,ng,
Design
and
Opera,ons
in
a
Changing
Climate
Session
3.4
Planning
Resilient
Hydropower
Under
Uncertainty

12. WHAT
ARE
THE
MAIN
TOOLS
FOR
HYDROPOWER
PLANNING?
HOW
SHOULD
PLANNING
TOOLS
BE
ADAPTED?
HOW
DO
DIFFERENT
ADAPTATION
AND
DECISION-­‐
MAKING
APPROACHES
APPLY
TO
HYDROPOWER?
Overview
Session
3.4.

13. Planning
for
an
increasingly
uncertain
future

14. Planning
for
an
increasingly
uncertain
future

15. Droughts

16. Floods

17. • Masterplan
• Electricity
genera<on
expansion
plan
• Strategic
environmental
assessment
• River
basin
development
plan
• Project
iden<fica<on
/
pre-­‐feasibility
study
• Feasibility
study
(some<mes
with
mul<ple
sub-­‐studies,
such
as
hydrological
studies
etc.)
• Detailed
design
• Environmental
and
social
impact
assessment
• Environmental
and
social
management
plan
• Sustainability
assessment
• Construc<on
plan
• Opera<ons
plan
Planning
Tools

18. • Average
flow
dura<on
curve
as
basis
for
the
average
annual
genera<on
and
determina<on
of
the
op<mal
design
discharge
• Flow
dura<on
curve
of
the
driest
year
on
record
for
the
sensi<vity
analysis
(to
check
whether
debt
can
be
serviced
even
during
droughts)
• Correc<on
factors
considering
quality
of
flow
data
(to
assess
the
sensi,vity
against
varia,ons
of
water
availability
and
the
influence
of
missing
or
vague
data)
• Environmental
flow
requirement
• Es<mated
flood
events
and
water
levels
(for
safe
design
of
hydraulic
structures)
Standard
deliverables
of
a
hydrological
study
for
a
small
project

19. EIAs
under
climate
change
• Climate
change
is
likely
to
affect
the
environment
and
social
condi<ons
in
the
project
area.
• Project
impacts
which
are
acceptable
in
today‘s
environment
may
not
be
acceptable
in
a
future
environment.
• Project
impacts
may
be
cumula<ve
with
impacts
of
climate
change.
• Climate
change
may
limit
the
poten<al
of
the
project
to
deliver
posi<ve
impacts.

20. Predic,on
oriented
approaches
to
adapta<on
focus
on
characterizing,
reducing,
managing
and
communica<ng
uncertainty,
resul<ng
in
increasing
sophis,cated
modelling
tools
and
techniques
to
describe
future
climates
and
impacts.
Resilience
oriented
approaches
to
adapta<on
are
accep<ng
that
some
uncertain<es
cannot
be
reduced,
and
emphasize
learning
from
experience.
Predic,on
and
resilience
oriented
design

21. Predic,on
and
resilience
oriented
design
Prediction
Resilience

22. Interconnec<on
of
systems
• to
provide
addi<onal
backup
for
changing
regional
condi<ons.
Incremental
construc<on
• where
possible
and
economically
feasible
(e.g.,
a
number
of
small
systems
rather
than
one
large
one)
to
allow
for
adapta<on
to
changing
circumstances.
Choice
of
robust
designs
• in
which
the
chosen
design
will
be
fairly
good
under
a
wide
range
of
outcomes
rather
than
op<mal
under
one
outcome.
Postponement
of
irreversible
(or
very
costly
to
reverse)
decisions.
Use
of
a
range
of
formal
decision
techniques,
including
scenario
analysis,
sensi<vity
analysis,
and
others.
Designing
for
extreme
condi<ons
Standard water resource planning recommendations
under climate change (I)

23. Standard
water
resource
planning
recommenda,ons
under
climate
change
(II)
Development
of
non-­‐
structural
measures
such
as
warning
systems.
Flood
and
storm
warning
systems
(inland
and
coastal)
can
be
used
to
adjust
to
the
risks
and
uncertain<es
of
flooding.
Preserva<on
of
ecosystems
As
an
adjustment
to
uncertainty,
areas
can
be
reserved
to
protect
against
the
uncertain
effects
of
climate
change
on
ecosystems
There is as yet
very little
documented
experience in
the application of
these principles
to hydropower
planning

24. 24
Si,ng
within
a
Basin
Group
work

25. How
could
si,ng
be
influenced
by
climate
change?
Group
Work
–
review
typical
si<ng
considera<ons:
-­‐ How
large
is
the
overall
expected
power
demand?
Base
load
or
peak
load?
-­‐ Which
reaches
or
tributaries
have
the
best
condi<ons
(large
&
regular
flow,
steep
topography)?
-­‐ Are
there
any
factors
that
exclude
reaches/tributaries
from
considera<on
(unstable
geology,
lack
of
access,
protected
areas
etc.)?
-­‐ Is
there
one
site
where
a
large
sta<on
could
be
built,
instead
of
several
small
ones?
-­‐ Is
there
any
logical
sequence
in
which
sta<ons
should
be
built?
-­‐ Can
sta<ons
support
each
other
in
their
opera<ons?
-­‐ If
there
are
other
water
uses
besides
hydropower:
How
much
storage
space
do
they
require,
where
are
the
loca<ons
with
storage
capaci<es,
and
are
their
storage
requirements
going
to
be
compa<ble
with
hydropower
opera<ons?