Fortum Värme – sustainable energy solutions Christer Boberg

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Fortum Värme is co-owned with City of Stockholm

• Fortum Värme is jointly owned by • As of 1st of January 2016 the current

ownership structure will change to a pure 50/50 joint venture between Fortum and City of Stockholm.

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In co-operation with our customers and partners we create the most resource effective and sustainable energy solutions for cities

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Fortum Värme’s objective

Our customers have a climate and resource neutral energy solution based on 100 percent renewable and recovered energy before 2030. We want to reach the objective much earlier.

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District cooling and heating in Stockholm

Christer Boberg

District Cooling in Stockholm city – one of the largest systems in the world

• 620 buildings • 123 km pipeline • 270 MW city network

Our district heating and cooling facilities in the Stockholm area

• 16 000 buildings • 1 392 km pipeline • >2700 MW normal winter

Facts about Fortum Värme

Sales 2015 Customers Heating 7,357 GWh 10 000 Cooling 370 GWh 400 Electricity* 1,333 GWh 1 Totalt 9,060 GWh ~10 400

*Sales of electricity to electricity exchange.

Half of our district heating origins from local sources

1. Energy from sorted waste from companies and households

3. Renewable biofuels from the forest industry and sun energy from the sea

2. Waste heat in sewer water, district cooling returns and from server farms

Energy supplied to the District cooling production

Free cooling Surplus cooling Heat pump cooling Cooling machine cooling

Energy supplied for District Heating production

Biofuel Waste and recycled fuel Energy from waste water Energy from sea water Heat recovery from district cooling Power Fossil fuels

In 2016/17 we will use about 90 percent renewable and recovered fuels in our district heating production

Who need´s cooling? Comfort cooling: • Offices • Shops • Shopping malls • Hotels • Conference facilities • Training premises • Elderly Care • Hospitals

Process cooling: • Industrial • Server locations/ telecom • Healthcare facilities

Building types, part of district cooling market

0%10%20%30%40%50%60%70%80%90%

Residential Offices andstores

Industrial Hosptials Other

Buidlings part of market Energy

District cooling value - customer value

• Minimal maintenance requirements

• Free space in and around the building

• The need of cooling is equal with consumed cooling

• Predictable economy

• High reliability • Safe cooling supplies • Long-term and reliable

investment • Proven technology

• No noise, local, or in to environment

• Better use of energy • Reducing carbon

dioxide emissions and refrigerants

• Better management of Earth's resources

Simpler Safer Cleaner

DC in Stockholm today?

Status 2015 • Ca 135 customers

• Ca 620 buildings connected

• Connected load approx 330 MW

• Average customer approx 350 kW

• Range 8-7 000 kW

GWh • 2010- expanding efficiency focus • 2012 – cold summer • 2015 – cold summer

2. The energy in the District Cooling system is recycled to the District Heating system.

3. Nights and times when the need for cooling is less, cold water is stored in the Fortum storage.

4. The low temperature in the DC system is transferred to the building's closed loop distribution system via the heat exchanger. The distribution system cools the ventilation supply air and the building itself.

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Simultaneous production of District Heating and District Cooling

1. Cold seawater "borrowed" to cool the District Cooling network closed loop water system. The sea water is then returned to the lake

process

4 0C

“Free cooling“

Stockholm District Cooling – City/Söder

Ropsten • Free cooling • Waste cooling

Nimrod • Chiller (summer) • Heat pump (winter)

Aquifer storage

Hornsberg • Rock storage

Hammarby • Heat Pumps • Cooling machines

District Cooling production

Plant Function

Ropsten > 100 MW

Free cooling from sea water; base load summertime

Peak load from chillers Waste cooling from heat pumps

Nimrod 45 MW

Heatpumps can also run in chillermode Base load with waste cooling wintertime

(Heat Pumps using DC as heat source)

Hornsberg 80 MW

Rock storage storing cold water from excess capacity night time

Aquifer 10 MW

Cold storage in Brunkebergsåsen (ground water in gravel ridge)

Hammarby 40 MW

Waste cooling from heat pumps (waste water heat pumps)

Peak load from chillers used summertime

DC, makes the differece

Sub station DC Customers local installation is more complicated and

space consuming. Obs! Endast exempel, anläggningarna ger inte samma effekt

Waste Cooling from Heat Pump

DC 6 oC

DH 80 oC

Heat source 4 oC

DC 16 oC

Heat exchanger

Ropsten 1, 2 a sea water based heat pump plant ~150 MW (+ Ropsten 3~100 MW)

THE NORTH QUAY

6 units

Two stage turbo compressors

Tube in shell condensers

Open spray evaporators, water flow ~3 m3/s per unit

Wooden tube as water intake 170 m long 3 m diameter

Ropsten 3 4 Heat Pump units

Panel evaporator

• This type of evaporator allows vere low heat source temeperatures. Leaving temp close to 0oC. Refrigerant between the plates and water on the outside

Refrigerant, in (liquid)

Refrigerant, out (gas)

Seawater in

“Nimrod” Combined Heat pump and Chiller

DC 6 oC

Sea Water 20 oC

DC 16 oC

“Nimrod” Combined Heat pump and Chiller

DC 5-6 oC

DH 80 oC

DC 12-16 oC

Process diagram of combined DH and DC production

Heat Pump in focus

• Fortum has 6 bigger heat pump plants in Stockholm, most of them are designed to produce heat and cooling simultaneously.

Heating Cooling – Ropsten1 & 2 150 MW 0 MW – Ropsten 3 100 MW 92 MW – Nimrod 36 MW 40 MW – Hammarby 230 MW 40 MW – Kista/Akalla 25 MW 40 MW – Vilunda 44 MW 10 MW

Rock storage at Hornsberg

• Built in 2008/2009 to increase the capacity in Stockholm • Taken in operation in november 2009 • Used as a day and night

storage. • Volume 50 000 m3

• Supply temperature 3-6°C

• Peak capacity 80 MW

Rock storage at Hornsberg

Effektens dygnsvariation

-1,5

-1

-0,5

0

0,5

1

1,5

0 10 20 30 40 50 60 70 80Serie1

100%-

50% -

Night Day

Night to day storage

Beckholmen Free Cooling plant

Technical scope • Free cooling based production plant • Uses cold seawater, from an intake

30m below surface. • High efficiency chillers to ensure

correct supply temperature to the customers.

• Peak capacity 90MW

Motives for investment • to allow expansion of the DC business. • to decrease CO2-emissions in

production. • to ensure low production costs.

A new waste-to-energy CHP plant in Brista in full operation 2014

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• 500 GWh heat and 140 GWh electricity annually from municipal and industrial waste that is not recycled or reused.

• About 240,000 tonnes of waste burnt annually.

• Wetlands in Steninge-dalen nature park – additional water treat-ment, biodiversity and recreational area.

100 percent biofuel in a new CHP plant in Värtan

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• 1,700 GWh heat and 750 GWh electricity per year – equals the annual heat consumption of about 190,000 apart-ments.

• Reduces CO2-emissions in Stockholm by 126,000 tons per year and by 650,000 ton per year within the EU.

• Approx. 1,000 people has been employed during the construction period 2013–2016.

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New Bio CHP at Värtan and fuel handling system in the harbour

Bio CHP at Nimrod

Pier with electricity connection from shore

Sieve and crush and train unloading facilities in the harbour.

Caverns and tunnels under the power plant and the harbour

Fuel is transported from the harbour through tunnels to the boiler

Fuel reception and handling Tunnels and caverns

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Bio CHP

Thank you!

Christer Boberg