Approach for regional energy system analysis

3.9.2015

Ismo Heimonen Senior Scientist VTT

Future energy systems

•  Versatile and complex energy systems •  trend of decentralization •  the end-users starting to produce part of the own energy use

(prosumers) •  new technical possibilities in energy production •  increase of the local energy and renewables •  improvement of the energy efficiency of buildings •  increase of the uncertainty of the energy business

⇒ Systematic approach and simulation tools needed ⇒ Case studies in EFEU and FlexE

3.9.2015

Set of tools and methods developed and used during EFEU

PeXa Primary Exergy Efficiency Analysis

(Aalto) Optimization of LNG supply chains (ÅA)

Optimization of gas distribution network

(ÅA)

A Spatial Decomposition Procedure for Efficient

Solution of Two-Dimensional Energy Distribution Problems

(ÅA)

A model for optimizing the regional mix of

intermittent and flexible energy (ÅA)

Ship Energy Flow Simulator (VTT)

Online Energy Flow Forecasting Methods

(VTT)

VTT business network analysis approach

LUT energy efficiency analysis approach

Solvo® Regio (Fortum)

Simulation of demand response in communities within NetZED

concept (Empower)

APROS, simulation of dynamic processes

(VTT & Fortum)

Case study Järvenpää district heating

•  Existing network as platform for the study •  Scenario approach, possible pathways for 2015-2035

•  Building stock and energy efficiency scenarios •  Energy system scenarios

1.  Conservative => 1 % of floor area changed to ground source heat pump GSHP

2.  Extensive => 10 % GSHP or solar thermal collectors STC

3.  Extreme => 50 % GSHP or STC 4.  Industrial waste heat, ’excess heat’ 5.  Heat prosumer, extra heat sold back to district heating

network •  Evaluation basis for the cases:

•  Energy – ecology – economy – social aspects

Examples of results

Energy

Ecology Economy

Thank you!

More results… •  Posters about the tools

•  Reports about the scenario studies •  ’Visions for future energy efficient district energy systems’,

Satu Paiho et al.; to be published in VTT Technology series •  Future district energy systems, Master’s Thesis Elina Grahn