# Rainbow Documentation Home

Welcome to the Rainbow Documentation Hub—your go-to resource for everything related to our carbon registry: standard rules, procedures, and methodologies. Whether you are a project developer, partner, or carbon credit buyer, this platform is designed to provide you with all relevant information you might look in a efficient navigation system.

**Why this documentation?**

At Rainbow, we believe that consistency, transparency, and adherence to well-defined standards are the cornerstones of trustful and success Voluntary Carbon Markets.

Our documentation is providing detailed guidance, rules and structured approaches to all processes of our carbon standard and registry.

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:arrow\_heading\_down: Download any page as a PDF by clicking the **Export as PDF** button to the right :point\_right:
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:mag: Check out our [open public consultations](https://docs.rainbowstandard.io/~/changes/113/rainbow-standard-documents/public-consultations) and give feedback :speech\_balloon:
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## Rainbow Standard Documents

Our Rainbow Standard Document section covers the essential rules and guidelines that govern our standard and registry across all methodologies and project types.

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><a href="rainbow-standard-documents/rainbow-standard-rules"><strong>Rainbow Standard Rules</strong></a></td><td>Sets the general requirement for Project Developers for registering and operating Rainbow projects and issuing Rainbow Carbon Credits (RCC).</td><td></td><td><a href="rainbow-standard-documents/rainbow-standard-rules">rainbow-standard-rules</a></td><td></td></tr><tr><td><a href="rainbow-standard-documents/procedures-manual"><strong>Rainbow Procedures Manual</strong></a></td><td>Describes the rules and procedures for documentation management, methodology development and updates, registering and operating carbon projects.</td><td></td><td><a href="rainbow-standard-documents/procedures-manual">procedures-manual</a></td><td></td></tr><tr><td><a href="rainbow-standard-documents/double-counting-policy"><strong>Double counting policy</strong></a></td><td>Outline the requirements set by the Rainbow Standard to ensure that carbon credits are unique, following the No Double Counting criteria in the Rainbow Standard Rules</td><td></td><td><a href="rainbow-standard-documents/double-counting-policy">double-counting-policy</a></td><td></td></tr></tbody></table>

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[procedural-templates](https://docs.rainbowstandard.io/~/changes/113/rainbow-standard-documents/procedural-templates)
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## Rainbow Methodologies

Each methodology gives specific requirements and quantification methods per project types.

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td>Biogas from anaerobic digestion</td><td></td><td></td><td><a href="methodologies/biogas-from-anaerobic-digestion">biogas-from-anaerobic-digestion</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FzIVZO38yyObvcKKWrx7C%2Fbiogas-from-anaerobic-digestion.png?alt=media&#x26;token=f7a32a05-26f4-4a48-aafe-b73025d3a80d">biogas methodology.png</a></td></tr><tr><td>Biomass carbon removal and storage (BiCRS)</td><td></td><td></td><td><a href="methodologies/biomass-carbon-removal-and-storage-bicrs">biomass-carbon-removal-and-storage-bicrs</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FR0TN0FvXWcrjcVsSjXI1%2Fbiochar.png?alt=media&#x26;token=53fc0925-3647-46c4-9485-01a72039cebe">BiCRS methodology.png</a></td></tr><tr><td>Refurbishing of electronic devices</td><td></td><td></td><td><a href="methodologies/refurbishing-of-electronic-devices">refurbishing-of-electronic-devices</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2F9ayWJeKaYCsPp7ukZtIT%2Frefurbishing-of-electronic-devices.png?alt=media&#x26;token=68e3623e-6168-458d-96ac-2edfbb5efc96">refurbishing of electronic devices methodology.png</a></td></tr><tr><td>Biobased construction materials</td><td></td><td></td><td><a href="methodologies/biobased-construction-materials">biobased-construction-materials</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FTr3sIOHGNdE2ZmetIHZV%2Fbiobased-construction-materials-1.png?alt=media&#x26;token=d7cc7c89-4fbb-4230-8a66-4d61e58992e6">biobased construction materials methodology.png</a></td></tr><tr><td>Battery second life</td><td></td><td></td><td><a href="methodologies/battery-second-life">battery-second-life</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2F4cnpLIfrwBQTmwl54Itg%2Fbattery-second-life.png?alt=media&#x26;token=5aa5bdd3-5235-4899-9af7-d0b73307c959">battery second life methodology.png</a></td></tr><tr><td>Mineralization of alkaline materials (ex situ)</td><td></td><td></td><td><a href="methodologies/mineralization-of-alkaline-materials-ex-situ">mineralization-of-alkaline-materials-ex-situ</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FG9GHfYH3cRuryi4yUWcg%2FCarbonation.jpg?alt=media&#x26;token=78f09219-80bb-40bb-b022-d64a8a82b2d8">Mineral Carbonation cover image.jpg</a></td></tr><tr><td>Enhanced rock weathering</td><td></td><td></td><td><a href="methodologies/enhanced-rock-weathering">enhanced-rock-weathering</a></td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2F4r5VWIQMWniVmw73gx79%2Fenhanced-rock-weathering-1.png?alt=media&#x26;token=10685cac-d535-4917-b795-ac2156fe2b82">enhanced rock weathering methodology.png</a></td></tr></tbody></table>

## 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. &#x20;

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>Transportation</td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2F4g3ATspPrpXOkgO46WAo%2Frodrigo-abreu-lq9PxpwDZUk-unsplash.jpg?alt=media&#x26;token=ff4d4803-f1a1-4018-a818-2d8f3abca67a">transportation module.jpg</a></td><td><a href="modules/transportation">transportation</a></td></tr><tr><td>Processing and energy use</td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FKPNtzjJ9BQrR4HiI2epX%2Fpavel-neznanov-w95Fb7EEcjE-unsplash.jpg?alt=media&#x26;token=b4f2f0ce-3495-46ac-b170-ce853598aab0">processing and energy use_new.jpg</a></td><td><a href="modules/processing-and-energy-use">processing-and-energy-use</a></td></tr><tr><td>Infrastructure and machinery</td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FgZHZ01H3WWqcZELguRo6%2Fvictor-2PJMDIgK9EA-unsplash.jpg?alt=media&#x26;token=7e8c0250-7d0a-4fa7-87ba-2199989183a5">infrastructure and equipment module.jpg</a></td><td><a href="modules/infrastructure-and-machinery">infrastructure-and-machinery</a></td></tr><tr><td>Energy co-products</td><td><a href="https://1461901304-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FE1FUJsBoIj20nqp3CtMf%2Fuploads%2FF1IanyzrKsw31BYTsPoH%2Ffre-sonneveld-q6n8nIrDQHE-unsplash.jpg?alt=media&#x26;token=208fac4c-8056-41fd-b7c3-1bb14c9e20a2">energy co products module.jpg</a></td><td><a href="modules/energy-co-products">energy-co-products</a></td></tr></tbody></table>