Energy
Waste
Water and Sewage
Transport
Green Blue
Buildings & land use
englishdeutsch
Tool Summary Tool Characteristics Tool Application Source of Tools Opinion of Tools

Tool summary

Name of the tool
Sustainable Process Index (SPI)

Description of the tool
SPI aims to calculate the total area that is necessary to embed an industrial process sustainability into the biosphere and to relate this area to the units of product (or service) provided by this process (Stot (unit/year)).
Total area (Atot (m2)) includes:
• areas providing raw material,
• areas providing energy,
• areas providing infrastructure and area to build infrastructure, and
• area to assimilate the products and by-products (emissions) of the process
SPI = (Atot/Stot) / Ain
Ain is the area per inhabitant in the region being relevant to the process.

Specific topic
Environment

Sector/s of use

Waste

Energy

Water

Transport

Green/Blue

Building & Land use

1

1

1

1

0

0

M - main sector, 1 - sub sector and 0 - n/a

Scale of applications

Component

Building

Neighbourhood

City

Region

0

1

0

0

0