# Methodologies The available methodologies and modules for use under the Rainbow Standard are listed below, with links to the respective methodology document. ## Rainbow Methodologies Each methodology gives specific requirements and quantification methods per project types.

		Cover image
Biogas from anaerobic digestion	biogas-from-anaerobic-digestion	biogas methodology.png
Biomass carbon removal and storage (BiCRS)	biomass-carbon-removal-and-storage-bicrs	BiCRS methodology.png
Refurbishing of electronic devices	refurbishing-of-electronic-devices	refurbishing of electronic devices methodology.png
Biobased construction materials	biobased-construction-materials	biobased construction materials methodology.png
Battery second life	battery-second-life	battery second life methodology.png
Mineralization of alkaline materials (ex situ)	mineralization-of-alkaline-materials-ex-situ	Mineral Carbonation cover image.jpg
Enhanced rock weathering	enhanced-rock-weathering	ERW methodology image 2.png

## Rainbow modules General Rainbow modules cover parts of project life cycles that are repeated across many technology types and methodologies. They contain basic eligibility requirements and GHG quantification approaches, and are combined with Rainbow methodologies when needed.

	Cover image
Transportation	transportation module.jpg	transportation
Processing and energy use	processing and energy use_new.jpg	processing-and-energy-use
Infrastructure and machinery	infrastructure and equipment module.jpg	infrastructure-and-machinery
Energy co-products	energy co products module.jpg	energy-co-products

--- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.rainbowstandard.io/rainbow-standard-documents/methodologies.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.