Library · Methodologies
The methodology library, as an ATProto policy graph.
70 MRV methodologies across 26 registries, each a self-contained org.broadlistening.policy.* policy graph that batches its issued credits into a hypercert. Pick one from the index or search below.
REDD+ Methodology Framework
Avoided deforestation and degradation across a project area, the flagship REDD+ framework.
Sustainable Agricultural Land Management
Adoption of sustainable agricultural land-management practices that cut soil emissions.
Improved Agricultural Land Management
Soil-carbon removals and N₂O reductions from improved cropland and grassland management.
Biochar Utilization in Soil & Non-Soil Applications
Durable carbon storage by producing biochar and applying it to soils and materials.
Afforestation, Reforestation & Revegetation
Tree-based removals on land that was not forest at the project start.
Reduction of Enteric Methane (Feed)
Enteric methane reductions from feed additives in ruminant animals.
Plastic Waste Collection
Plastic Waste Reduction Standard: credits for verified collection of plastic.
Plastic Waste Recycling
Plastic Waste Reduction Standard: credits for verified recycling of plastic.
Energy Efficiency & Fuel Switch (Cookstoves)
Revision for metered + measured improved-cookstove and fuel-switch projects.
Flaring or Use of Landfill Gas
Capture and destruction or use of landfill gas that would otherwise be emitted.
Grid-Connected Renewable Electricity
Renewable generation displacing fossil power on the grid, the most-used CDM methodology.
Electricity & Heat from Biomass
Grid electricity and/or heat generated from biomass residues.
Single-to-Combined-Cycle Power
Efficiency gain by converting open-cycle to combined-cycle generation.
Electricity from Biomass (Dedicated Plants)
Power generation in plants firing only biomass.
Electricity Generation by the User
Small-scale user-sited renewable electricity for own consumption.
Thermal Energy for the User
Small-scale thermal energy with or without electricity for users.
Grid-Connected Renewable Electricity
Small-scale renewable generation feeding the grid.
Switch from Non-Renewable Biomass (Thermal)
Thermal energy for the user by switching away from non-renewable biomass.
Renewable Electricity for Captive Use
Small-scale renewable electricity for captive use and mini-grids.
Efficient Cookstoves (Non-Renewable Biomass)
Demand-side efficiency from improved biomass cookstoves.
Demand-Side Efficient Lighting
Efficient lighting technologies replacing inefficient lamps.
Switch to LED/CFL Lighting
Substituting fuel-based lighting with LED/CFL systems.
Low-Greenhouse-Gas Water Purification
Safe drinking water displacing the boiling of water with fossil or biomass fuel.
Electrification of Communities (Mini-grids)
Rural electrification via renewable mini-grids and extensions.
Methane Recovery in Animal Manure
Anaerobic digestion capturing methane from manure-management systems.
Avoidance of Methane via Composting
Composting organic matter to avoid anaerobic methane emissions.
Methane Recovery in Wastewater
Capturing methane from wastewater-treatment systems.
Afforestation & Reforestation of Lands
A/R removals on degraded or non-forest land.
Afforestation / Reforestation
Gold Standard tree-based removals with strong safeguards.
Accelerated Carbonation of Concrete Aggregate
Mineralising CO₂ into recycled concrete aggregate for durable storage.
Emission Reductions from Safe Drinking Water
Safe drinking-water supply displacing fuel used for boiling.
Improved Cookstoves (TPDDTEC v3.1)
Technologies and practices to displace decentralised thermal energy consumption.
Adjusted Water Management in Rice
Methane reductions from adjusted water-management practice in rice cultivation.
Grid-Connected Renewable Electricity
GCC renewable-electricity methodology for the Gulf and beyond.
Amana Renewable Programme
Programmatic renewable crediting contributed via Amana.
International Renewable Energy Certificate
Tradable attribute certificates evidencing one MWh of renewable generation.
U.S. Landfill Protocol v6.0
Methane destruction at U.S. landfills under the Climate Action Reserve.
Soil Carbon (RothC model)
Template wrapping the RothC soil-carbon turnover model.
Soil Carbon (Cool Farm Tool)
Template wrapping the Cool Farm Tool estimator.
Soil Carbon (MIMICS)
Microbial-Mineral Carbon Stabilisation soil model template.
GHGP Corporate Standard
Organisational GHG inventory across Scope 1, 2 and optional Scope 3.
GHG Scope 2 (Market & Location)
Purchased-energy emissions under the location- and market-based methods.
GHG Scope 3 (Value Chain)
Upstream and downstream value-chain emissions across the 15 categories.
Carbon Emission Tokens & Removal Units
Tymlez-contributed tokenised emission and removal accounting.
Clean Cooking Fuel & Usage
Tokenises fuel supply and metered stove usage for off-grid households.
Community Biochar (Bounty)
A community-contributed biochar methodology from the bounty programme.
Nature Framework (Nature Credits)
Quantifies biodiversity uplift from a baseline; one Nature Credit is one quality-hectare-equivalent of uplift.
PV Nature Biodiversity Standard
Community-led biodiversity certification. Issues Plan Vivo Biodiversity Certificates and is designed to stack with PV Climate carbon credits.
Biodiversity Gain (basket of metrics)
Open-source method: a unit is a 1% uplift (or avoided loss) per hectare in the median of a basket of taxa reflecting the site's objectives.
Voluntary Biodiversity Units
Each Tebu represents 10 m² of preserved or restored ecosystem, sold once and held for at least 20–30 years of permanence.
Indicator Species Biodiversity
Measures biodiversity outcomes by tracking indicator species and habitat quality over the project area.
PV Climate Carbon Standard
Community-led carbon removals from agroforestry and restoration. Designed to stack with PV Nature biodiversity credits from the same area.
Indicator-Species Biodiversity (IPLC-first)
IPLC-first method built on indicator-species field observation. Its interoperable unit (one hectare for one month, graded by measured integrity) is adopted by Cercarbono's CBC and designed for Kunming-Montreal / NBSAP accounting, with an explicit anti-offsetting stance. Maps directly onto community AudioMoth / camera-trap monitoring.
Accounting for Nature (CreditNature / NaturePlus)
Certifies environmental-condition accounts (Econd) on a 0–100 scale, underpinning CreditNature and NaturePlus units.
Biodiversity Framework
Gold Standard's maturing biodiversity framework, borrowing its carbon third-party verification and registry infrastructure.
Biodiversity Net Gain (statutory)
England's statutory regime: development must deliver at least a 10% net gain, measured in Defra statutory biodiversity units. Robust, and confined to England's geography.
Nature Repair Market (statutory)
Australia's legislated market issuing tradable biodiversity certificates for registered nature-repair projects.
Volumetric Water Benefit Accounting
The de-facto methodology standard for replenishment and volumetric water claims, with a companion Water Quality Benefit Accounting framework.
Water Quality Benefit Accounting
First-of-its-kind guidance (with LimnoTech and The Nature Conservancy) for quantifying water-quality benefits.
Water Benefit Certificates
1 WBC equals 1 m³ of water supplied, purified or conserved, third-party audited under Gold Standard for the Global Goals.
Water Restoration Certificates
Well-established corporate water-balancing certificates that translate restoration projects into volumetric estimates.
International Water Stewardship Standard
Certifies sites and practices against catchment-level water stewardship, as the credible basis VWBA builds on.
Nutrient Reduction Credits (N / P)
Regulatory trading of nitrogen / phosphorus load reductions (e.g. US Chesapeake Bay). A compliance mechanism distinct from volumetric replenishment.
Ekos BioCredita
New Zealand terrestrial and marine biodiversity credits, the first programme validated to the BCA / WEF / IAPB High-Level Principles.
Agrobiodiversity (chagra & rare crops)
Payments for rare-crop preservation, traditional chagra systems and Indigenous agricultural knowledge, extending beyond sales into food security and reforestation.
Agrobiodiversity Enhancement
Cercarbono's agrobiodiversity category: crops, livestock, pollinators and regenerative practices within farms and supply chains.
Biodiversity Gains in Agrarian Landscapes
One Biodiversity Unit per hectare per year (BU·ha·yr) equals a 1% change in a selected set of biodiversity metrics for agrarian landscapes.
Post-colonialist Ecotourism
Community-designed, immersive travel on equal footing with Indigenous hosts: shared aims, shared economics, on their terms.
GSTC Sustainable Tourism Criteria
The global baseline Criteria (Industry + Destination) for sustainable tourism. It certifies operators and destinations as a recognised standard.
Global Ecosphere Retreat (The Long Run)
A conservation-tourism standard balancing Conservation, Community, Culture and Commerce (the 4Cs) at nature-based retreats.