Role of District Energy inDecentralization of Energy Supplyin Denmark

October 20191

Power Supply System, Denmark

October 20192

National Energy PlanningGreen Fuels + CHP as technology
 Heat planning promoted green solutions by administrative decrees
in 1990-1998:
 New and existing district heating supplies should be Combined
Heat and Power plants, if recommended by feasibility study.
Very energy efficient technology
 From oil and coal  natural gas and biomass
 CHP contributed ¾ of new power capacity from 1990-97.
 Municipality as Heat planning authority in the 1990’s and today.
Strong national guidelines for local decisions.
 Conversion to electrical based energy system 2010-2030
October 2019

Page 3

Organisation/local ownership
Large cities (originally power plants):
Owned by large energy companies.
Centralized CHP (production only).
Transmission usually unbundled.

Smaller centres (originally DH plants/CHP)
during the 1980s an -90s:
Usually joint production and distribution.
Owned by municipalities or local consumers

Distribution

Transmission

DH-gridTransmission:
Typically owned bymunicipalities.

Decentralized
CHP orbiomass DHConsumers
October 2019

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Energy Planning – local/regionally• A: Zero line – Data Collection, where are we?

• Energy consumption – power, heat, fuels, transport• Energy ressources – fuels, renewable energy, excess heat

• B: Setting targets – where do we want to go• Environmental – CO2, NOx, particles• Economical – import, local supplies• C: Planning – How do we do?
• D: Corrective activities• Follow-up – standardized data collection

October 20195

Local Energy Planning

District energy in long-term planning of urban
developmento Planning of DHC as for otherinfrastructureso (Power, water, sewage, gas)o Planning of urban developmento Location of residential andcommercial areaso Location of energy production plantso Facilities with excess heato Design and requirements for newbuildings adapted to DHC
o Low-energy not zero-energyo Prepared for low-temperature
6

Heat Supply Zones
 First Heat Supply Act introduced supply zones all over Denmark.
Secures economy of scale and optimal use of capacity.
Preliminary zones in 80’s, finally established in 90’s.

World Bank citation: Supply zones can make DH compete withindividual heating to the benefit of lower consumer prices
October 2019

Page 7Power supply system 2019
October 11th – high wind-production

October 20198

Power supply system 2019
October 16th. low wind-production

October 20199

Integrated local energy plant, example• Braedstrup Total Energy• Heat production ( – Power production• Heat Storage – function as power balancing unit
• Power consumption

Production facilities• Solar collector area of approx. 18,600 m2• Borehole heat storage (BTES) of approx. 19,000 m3 heated soil(~ 8,000 m3 of water equivalent)

••
•
••

Tank storages (2,000 m3 + 5,500 m3 ~ 400 MWh)
Electric HeatPump (6 MWth)Electric Heat Only Boiler (10 MW)
Natural gas CHP (2x 3,7 MWelectr. 2 x 4 MWth )Natural gas Boilers (13,5 MW th )October 201910

Energy Planning tools and examples
DHAT
https://ens.dk/en/our-responsibilities/global-cooperation/districtheating-assessment-tool-dhat
Hotmaps
https://www.hotmaps-project.eu/
Planning and designing Energy Production Plants
https://www.emd.dk/software/, EnergyPro, WindPro11

Jens Birch Jensen
jbj@planenergi.dk

www.planenergi.eu

Thank you for your attention

PlanEnergi – Company Presentation
Contact:

www.planenergi.eu
Jens Birch Jensen
Vestergade 48H, 3rd
DK 8000 Aarhus CMob.: +45 2066 0815
Mail: jbj@planenergi.dk

PlanEnergi, Nord
Jyllandsgade 1,
DK-9520 Skoerping

PlanEnergi, Aarhus
Vestergade 48H, 3rd
DK-8000 Aarhus C

PlanEnergi, Copenhagen
AC Meyers Vaenge 15
DK-2450 Copenhagen SV

October 201913

History•

Idea: Creating an independent consulting firm to supply competent advice concerning allforms of renewable energy and energy efficiency solutions.

•Established in 1983.

•Purpose:“To promote the use of resource-saving and environment protective systems. The
objective will be furthered through commercial and information activity within renewableenergy, rational exploitation of energy and energy planning as well as informationactivities”.

•

Independent consultancy.

•Non-profit fund (a self governing business institution).

•

40 employees.

October 201914

Business area
• PlanEnergi specialises in the development and creation of customised
environmental solutions within renewable energy, rational energy useand energy planning.
• Main work areas:• Energy planning – Heating, cooling, transportation, industrial• District heating based on renewable energy
solar thermal, seasonal storage, heat pumps, biogas, biomass, industrial waste heat etc.

••
•
•
•

Combined Heat and Power, heat only production and district heating networks
Combined heat and cooling, district cooling
Biogas – planning, design, project planning and general consultancy
Wind – planning, mapping, installation pattern and EIA with visualisations
Technology development•

October 2019

Power to heat/heat to power, H2, Methanization, Energy Storage technology

15

Locations• Offices in• Skoerping• Aarhus• Copenhagen• Location of tasks…

October 201916

Locations• Subsidies• PCE - PlanCommunityEnergy•••

Samsoe Energy Academy (DK)ISEP (JP)PlanEnergi (DK)• Location of tasks…
• Japan• AsiaOctober 201917

References – International activities
Hamburg City

October 201918

References
Energy planning locally…
…and in large scale e.g.
•Samsoe Island
Strategic Energy Planning

Heat Roadmap Europe:••••

DH not only relevant for northern Europe.
Mix: DH + HP + heat savings.
We should implement heat savings until the priceof sustainable supply is less than the marginal price ofadditional savings
www.heatroadmap.eu

October 201919

References, selected items
Solar District Heating – SDH and seasonal Storage
Long Term Storage and Solar District Heating
Marstal DH, Dronninglund DH (front page picture), H.Taastrup,Tibet, Austria, France

District Heating Heat Pumps (selections)-Broager: 4 MWth, heat source: ground water, combined with solar heating and gasfired CHP
Roedkaersbro: 1,6 MWth, heat source: waste water from diary. Combined with CHP (Natural and biogas)
Stoevring CHP Plant: YouTube direct video: 8,7 MWth , heat source: ambient air.
2 Mycom Electric driven compressors

Biomass-Oester Hornum: 3,1 MW Heat Only Boiler for straw,
Gelsted: 4 MW, Heat only boiler for wood chips
Vegger Biogas Plant: 5.000.000 m3 biogas/ year. –CHP and heating for DH and Diary

October 201920

Dronninglund SDH• 35.000 m2 solar panel• 60.000 m3 seasonal storage (water pond 5-90 °C)
October 201921