v1.1 Release

V1.1 Editorial updates approved by the WG 18 Apr:

T.2 Updated

I – Location-based marginal carbon intensity updated to I – Region-specific carbon intensity

T.3 Added
carbon

Greenhouse gases are a group of gases contributing to global warming. In this specification we use 'carbon' as a broad term to refer to the impact of all types of emissions and activities on global warming.

General Updated

To calculate the operational emissions associated with software, multiply the electricity consumption of the hardware the software is running on by the region-specific carbon intensity.

Operational emissions Updated
General update with

To calculate the operational emissions associated with software, multiply the electricity consumption of the hardware the software is running on by the region-specific carbon intensity.

Region-specific carbon intensity Updated

The carbon intensity of electricity is a measure of how much carbon (CO2eq) emissions are produced per kilowatt-hour (kWh) of electricity consumed.
Region-specific carbon intensity factors measure the grid carbon intensity of electricity in a grid region. If the electricity consumption is connected to a grid, the short run marginal, long run marginal, or average emissions grid intensity of that grid shall be used, which excludes any market-based measures. If the electricity consumption is not connected to a larger regional grid, an appropriate emissions factor for that system shall be used. From a developer perspective, only the location-based info is important in terms of the impact on eliminating carbon emissions. This excludes market-based measures and is distinct from 100% renewable energy claims.

Calculation Updated

What one unit of R looks like may be modelled and the total carbon (C) calculated for executing one functional unit of work (R) in a controlled lab environment. For instance, a benchmark may be created that models a user interacting with a software application and then measures the C emitted per run of that benchmark. The result is still a C per user.

What's Changed

• Updating Main from v1.0 to v1.1 by @seanmcilroy29 in https://github.com/Green-Software-Foundation/sci/pull/379c

v1.0 Release

SCI Standard published - https://www.iso.org/standard/86612.html
Release Approved v1.0 by WG