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Sustainability Indicators related to Energy and Material Flow. Koji Amano, Ritsumeikan University Misato Ebihara, IBM Japan, Ltd. Katsutoshi Tobe, NTT DATA Corporation Masahiko Harada, Shiga Prefectural Government. Backgrounds.

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sustainability indicators related to energy and material flow

Sustainability Indicators related toEnergy and Material Flow

Koji Amano, Ritsumeikan University

Misato Ebihara, IBM Japan, Ltd.

Katsutoshi Tobe, NTT DATA Corporation

Masahiko Harada, Shiga Prefectural Government

backgrounds
Backgrounds

Toward a sustainable society considering “trilemma” between energy/resource , environment and economy

Objectives

Eco-efficiency evaluation as sustainability Indicator used for environmental management

#1 analyzing energy flow characteristics in detail

#2 combining energy flow and material flow

slide3

Recycled energy

Primary energy

Material input

Material output

Including product and waste

Recycled material

Material flow

Energy flow

Estimating energy and material flows in each region and industrial sector to evaluate regional and industrial eco-efficiency

Environmental load

Region or Industrial sector

Net energy (demand) use

slide4
47 prefectures in JapanPopulation:0.6 - 12(avg. 2.7)millionsArea:1.9 - 83 (avg. 7.8)103km2Distance from Tokyo:up to 2,200km

HOKKAIDO

KYOTO

TOKYO

AICHI

OSAKA

OKINAWA

applied data
Applied Data

*Ministry of Land, Infrastructure and Transport **Ministry of Public Management

***National Institute for Environmental Studies ****The Institute of Energy Economics

slide6

I-O table for each prefecture

AOMORI I-O

OKINAWA I-O

HOKKAIDO I-O

・・・

Industrial product table

3EID

based on national I-O

1995 national I-O

table for mass balance

Physical distribution census

Industrial waste statistics

Comprehensive energy statistics

-energy balance table-

Calculation flow

Several energy flow, the material flow and environmental load

emissions in each region and industrial sector

slide7

Analyzing energy flow characteristics in detail

Recycled energy:

Novel energy use by recycling waste including biomass and tire waste

slide8

Environmental load

CO2 emission

CO2 emission

×

Energy input

Material input

×

×

Product output

Product output

Energy and resource

Economy

Sustainability in energy and material flow

… considering trilemma between environment, energy and economy

Energy input

Material input

slide11

Environmental load

CO2 emission

CO2 emission

×

Energy input

Material input

×

×

Product output

Product output

Energy and resource

Economy

Sustainability in energy and material flow

… considering trilemma between environment, energy and economy

Energy input

Material input

slide12

#1

〔thermal unit〕

〔mass unit〕

#2

Net energy use

Product output

#3

#5

#4

Primary energy input

Recycled energy input

Net energy use

Primary energy input

Total material input

Product output

Recycled material input

Total material input

Eco-intensity based on energy and material flow

slide14

Relationship between RPM and population

Optimal population size?

Relationship between primary energy input / total material input of the service industry and population of each prefecture

slide15

Relationship between RPM and GDP

Optimal GDP magnitude?

Relationship between primary energy input / total material input of the service industry and GDP of each prefecture

slide17

Relationship between RNP and Dist. from Tokyo

Distance degrades eco-efficiency?

Relationship between net energy use / product output of the service industry and Dist. from Tokyo of each prefecture

slide18

Relationship between RNP and Dist. from Tokyo

DTM: distance from Tokyo metropolitan area

Distance improves eco-efficiency?

Relationship between net energy use / product output of the chemical industry and Distance from Tokyo of each prefecture

slide19

Summary

Simple ratios ( “CO2 / energy”, “energy / flow”, and “flow / GDP” ) could be utilized as a kind of sustainability indicators to evaluate eco-efficiencies of local regions or industrial sectors.

Those ratios could be compared in each region and industrial sector for comprehensive sustainability evaluation.

Several relationships between the “primary energy input / total material input ” ratio and regional or industrial characteristics were obtained, and some optimal population size or economic growth potential could be presented.

Another relationship between the “net energy use / product output ” ratio and regional or industrial characteristics were also obtained, such as distance from major markets.