ANUNDSJÖ HYDRO POWER PLANTCHALLENGES AND STAKEHOLDER INVOLVEMENT

Angela Odelberg, Statkraft Sverige AB

FIT Hydro, Stockholm 5 June 2018

Anundsjö HPP

Located in a tributary in Mo River (Moälven) 40 km from the sea.

Run of River system typical for Sweden.

5 MW, 26 GWh, appr 12m high dam representing river

discontinuity.

Requirement from the Swedish authorities to establish a two-way

migration facility for fish and a downstream env. flow in residual

area

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Baltic sea

Map of the location of Anundsjö HPP

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Spawning areas upstream and downstreamAnudsjö HPP

Mo River contains of several

tributaries and Anundsjö HPP is in

one of them

Blue dots = electro fishing areas

Yellow arrow = Anundsjö HPP

Blue arrows = Spawning areas

upstream the hydro powerplant

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The fishway opened 2015

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Fishway data

CAPEX: 2,7 M Euro. Design by an international consultant.

Two-way migration, smolt trap + natural fishway

Technical data: Length: 450m, slope 2%, width 2 m.

Release flow: 15/7 – 5/10: 0,8 cms, otherwise 0,25 cms

VAKI counter recently installed (July 2016) and being tested

High interest and wish for involvement from local and

national stakeholders.

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Natural fishway

Smolt trap

Residual flow area

4 km long and restored

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Outlet

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Fish in Anundsjö area

Salmon and Sea Trout: Reintroduced during 2013-2017 by the municipality,

aprox 500000 Salmon and 300000 Sea Trout overall. Most of them upstream

the HPP, some in the residual area.

Follow-up is made by electrofishing

An inventory of spawning areas were made in 2001 and its aprox 9 km of

rapids and 155.000 m2 of very good/good areas for spawning upstream the

HPP

Multispecies water course with salmon, sea trout, brown trout, grayling, pike

and perch. Also a red listed specie; crayfish

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Challegnes Anundsjö HPP

The greatest challenges are:- How big is the problem of predation uptream the HPP?

- What are the quality of spawninggrounds and juvenil-areas, upstream the HPP and in the residual area?

- When do the smolt start to migrate?

- Which way will smolt prefere when arriving at Anundsjö HPP?

- How to count smolt properly?

- Is the outlet affecting the upstream migration?

How do Statkraft adress the challenges?- 2016 we realized that the downstream migration probably did not work as intended

- 2016 we applied to join FIThydro

- 2017 we tried to lead the smolt to the fishway with special fishing nets and we also tried to fish during time for

downstream migration but only catched 2 smolt. None was registrated by VAKI.

- 2018 we will release stocked smolt upstreams the HPP to investigate how many are registrated by VAKI

- 2018 we will continue to modified the downstream migration device

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Downstream migration device

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Downstream migration device

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Downstream migration device is modified

A fishing net leading the smolt to the

natural fishway instead of smolt trap

We were not able to get a straight line

for the fishing net

This year we will continue the

modifcation to get a more straight line

Mo River under development

Salmon and sea trout was extinct in Mo River somewere in 1950-70

During 1980´s restoration of the river were started by the municipality, county government and local fishermen

In early 1990´s the focus have been to reintroduce salmon and sea trout in some of the tribituaries in Mo River

2005 LIFE- project «Moälven» started and all initiatives were handled in a more wide and holistic vieu

Now there are several places who holds natural spawning in Mo River, which of course is concidered as a great

success due to restoration and reintroducing by the municipality and county governement

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Local initiatives

Solveig is one of the positive forces

in the area

Thanks to her, the children in the

area are able to learn about different

fish- spices in school and fish-

friendly tecnology in hydropower

Some of her work is publiched in a

report from Environmental

Protection Agency

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Local initiatives

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Bo is the one who has

done most of the

electrofishing in Mo River

He has also contributed to

reintroduction of salmon

and sea trout in most of the

tribituaries in Mo River

Local initiatives

During two years

Statkraft have met with

2 schools in the area to

talk about the work in

Anundsjö HPP

The events were also

recognised in

newspapers

Local initiatives

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Together with local

fishermen Statkraft has

started a project to

reintroduce crayfish in

Anundsjö area

www.statkraft.com

THANK YOU

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