Reference Data

Embodied Carbon Emissions

Data Description
Reference Sources
Comments

Structural Quantities

Price & Myers; DeQo; C.Scale; RASMI; others → Request info

Structural quantities by building type by structural system

Structural Material Carbon Intensities

Assume concrete density 2400 kg/m3 and timber density at 450 kg/m3

PV Panel Lifecycle Emissions

Includes panel only (racks and cabling excluded)

Cladding Carbon Intensities

Cladding, roofing, and glazing units.

Interior Fit-Out Carbon Intensities

Data best describes commercial office fitouts

MEP System Carbon Intensities

Data-scarce category

Hardscape Carbon Intensities

Based on standard hardscape details

End-of-Life Emissions

In year 60

Embodied Carbon Benchmark Values

Benke, B., Aurora J., Mel C., Simonen K., and Meghan Lewis. (2025). “The Embodied Carbon Benchmark Report.” Carbon Leadership Forum.

Benke, B., Chafart, M., Shen, Y., Ashtiani, M., Carlisle, S., Simonen, K. A Harmonized Dataset of High-Resolution Embodied Life Cycle Assessment Results for Buildings in North America (buildings dataset)

Embodied Carbon results in C.Scale reference the CLF WBLCA Benchmark Study v2 results

Operational Carbon Emissions

Data Description
Reference Sources
Comments

Carbon Intensity of Electricity, 2023-2050

Includes AER and LRMER metrics across three grid scenarios: Midcase, High Cost Renewable Energy, 95% decarbonization by 2045

Carbon Intensity of Electricity, 2051-2110

Extrapolation algorithm by C.Scale

Extrapolate 2050 Cambium estimate using average annual decrease across 2023-2050 for each geography. Or, assume 2050 value remains constant.

Refrigerant Charge

Quantities from Rodriguez 2019

Total refrigerant charge across all of a building's HVAC+R systems

Energy Use Intensity Benchmark Value

Zero Tool (North America); summary of EPC databases (EU and UK)

CBECS/RECS 2003

% of EUI from onsite combustion

CBECS/RECS 2003

Solar Resource

NREL Physical Solar Model

Energy Production from PV Array

NREL PVWatts v8

Carbon Storage and Sequestration

Data Description
Reference Sources
Comments

Landscaping Maintenance Emissions

Biogenic Carbon Storage

CEN (2014). EN-16449: Wood and wood-based products - Calculation of the biogenic carbon content of wood and conversion to carbon dioxide

Hoxha et al (2020). Biogenic carbon in buildings: a critical overview of LCA methods. Buildings and Cities,1(1)

ACLCA, (2019). ACLCA Guidance to Calculating Non-LCIA Inventory Metrics in Accordance with ISO 21930:2017. ACLCA.

For timber structural elements.

Soil Organic Carbon

Used in calculation of emissions from greenfield development.

*Full citation for Payette’s Kaleidoscope: Payette’s Kaleidoscope Embodied Carbon Design Tool, data from Tally by Building Transparency and KT Innovations, thinkstep, and Autodesk using industry representative LCI data unless otherwise noted. Accessed in November 2023.

Reference Data via API

The regionally-specific carbon Intensity data used in C.Scale is exposed via out API at the /api/carbon-intensities endpoint. This is useful for populating tooltips and helper texts when C.Scale is integrated in your application.

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