POWER TO GAS GOTLAND – OVERVIEW AND PARTIAL RESULTS 2016-06-22

2016-06-29 1

Sweden 2025 Lindfeldt, Saxe, Magnusson, Mohseni

Applied Energy, 2010

Sweden 2030 Fossilfrihet på väg, Prof. Thomas B Johansson, 2013

Europe 2030 (total 5000 TWh) Audi, Dr. Hermann Pengg, 2016 BULK!!!

Feasibility study

• Feasibility study for the first MW-scale PtG plant in Sweden • Location • Technology • Economical aspects • Regulatory issues

• Continuation of the previous ”location study”

• Many local actors interested • Broad project group involved – Gas grid

owners, Electricity grid owners, Industry, Energy Companies, Component manufacturers, Gotland Municipality etc. Malmö

Göteborg

Stockholm

Current situation on Gotland

• Existing main land cable connection 200 MW

• New 300 MW cable in 2021 at the earliest

• Visions of 1000 MW in 2030

• PtG as seasonal energy storage and/or for fuel production

• Possible CO2-sources • Existing biogasproduction

• Industry (e.g Cementa)

• Spendrups beer production

Malmö

Göteborg

Stockholm

Wind Power vs Main land cable connection

0

200

400

600

800

1000

1200

Nuvarande utrymmeför vindkraft (2014)

Vision om vindkraft till2020

Planeradfastlandskabel i drift

2021

Vision om vindkraft till2025

Vision om nyfastlandskabel under

2020-talet

Kap

acit

et (

MW

)

Business case PtG (SNG) • System efficiency electricity to methane roughly 50 %

• Hence methane must be sold 2 x electricity price (per kWh) to cover only the electricity cost

• Additional spread needed to cover investment costs, operational costs, m.m.

• CO2 source and electricity production close to eachother

• Free CO2

• Spread between electricity price and biogas price per kWh • If possible, be able to use added value of electrolyser eg. balancning, lowering feed

in-costs etc.

• Existing infrastructure for methane

• Possibility to sell heat

• Possibility to sell oxygen

Digestion process

Förnybar el Elektrolys

Power to Gas vs. Conventional biogas production

CO₂- separation

60m³ CH₄ 40m³ CO₂

40m³ CO₂

60m³ CH₄ (=vehicle gas)

> 95 m³ CH₄

H₂

CO₂- methanation

Via Power to Gas - CO2 används som råvara för ytterligare metanproduktion

+60%

Visby

Klintehamn

22 GWh

4-5 GWh?

Crude gas production

Wind Power >20 MW

2 - 3 MW

Pipeline

Scene Gotland

Slite (Cementa)

Upgrading facility

0

200

400

600

800

1000

1200

1400

1600

0 1000 2000 3000 4000 5000 6000 7000 8000

SEK

/MW

h

Timme

Price duration curve 2015 - SE3

Elpris Medelpris el

Ca 2 €cent/kWh + grid fees

Vehicle gas Ca 8-12 €cent/kWh

Hydrogen price Ca 25-30 €cent/kWh

Upgrading

Crude gas production

PtG incl electrolysis

CH4/CO2 ≈ 60/40

Gas cleaning

PtG + Electrolysis at upgrading

Visby

Brogas

Advantages • Have good possibilities to sell heat to

surrounding processes eg. district heating grid or Arla

• Miminum distribution needs of H2, CO2 or CH4

• Existing storage for end product Disadvantages • Grid fees are relatively high

Electricity [PROCENT]

Grid fees [PROCENT]

Water [PROCENT]

Employment costs

[PROCENT]

OPERATIONAL COSTS

Synthetic methane

[PROCENT]

Oxygen [PROCENT]

District heating

[PROCENT]

REVENUES

Fördelning av kostnader och Intäkter

Brogas

Everything in Klintehamn - if biogas production plans are executed

• Local grid use (IKN) • Heat needs in the surroundig • Minimal transportation of H2 required

Visby

Klintehamn

Upgrading

Crude gas production

PtG incl electrolysis

Gas cleaning