Making Money With Your Forest�Forest Carbon Offset Credits
Larry Wilson, RPF
larryW.rpf@gmail.com
707-223-2696
The Industrial Revolution
Global Warming
Climate Action Timeline
1988: Montreal Protocol - the first international Cap and Trade Agreement to curb pollution.
1988: First voluntary carbon offset project.
1992: UN Framework Convention on Climate Change (UNFCC).
1997: Kyoto Protocol (UNFCC) - First international cap and trade system with the
goal of reducing GHGs.
Voluntary Greenhouse Gas Registries:
2006: AB-32, California’s Cap and Trade Law signed
AB 32�California’s Cap and Trade Law
Cap - A legally binding, decreasing limit on the total amount of GHGs that covered entities (power plants, refineries, and other industrial facilities) are allowed to emit.
Allowance - The amount of GHGs an individual company is allowed to release in a given year.
Trade - Individual companies that are not in compliance can purchase allowansell or trade the unused portions of their allowances to companies that are not or purchase offset credits on an exchange.
2006 - Original Objective was to reduce California’s emissions of GHGs to 1990 levels by 2020 (goal was achieved by 2018).
2015 - Goal updated to reduce GHG emissions to 40% below 1990 levels by 2030.
September 2025 Update:
Definitions�
Actual Carbon Stocks (AC)
The total carbon in live and dead trees (stem, bark, limbs, and roots) in trees that are 5” dbh and larger. Expressed as metric tonnes, CO2 equivalent.
Additionality
The requirement that offset credits are only granted for practices that sequester more actual carbon than business as usual.
Baseline Scenario
Business as usual. An imaginary management regime that could have been followed under the laws, regulations, and conditions in effect at project commencement.
Baseline Carbon Stocks (BC)
The average carbon stocks calculated by modeling the baseline scenario over a
100-year period.
Quantified Reductions
Initial crediting period: (AC 1 – BC)
All other periods: (AC y – AC y – 1)
* minus relatively small adjustments for carbon stored in wood products and leakage
Project Types�
Reforestation – Planting trees on forest land to enhance natural regeneration
( e.g., post-wildfire rehabilitation). The baseline scenario is no additional planted trees.
Improved Forest Management (IFM) – Adopting management practices that increase onsite carbon relative to the baseline scenario. The baseline scenario is normally modeled as an intensive timber management regime based on the minimum stocking standards and other requirements of the Forest Practice Rules. Eligible practices include uneven-aged management, longer rotations, reduced or no harvesting, higher stocking levels.
Avoided Conversion – Protecting forest land from imminent conversion to non-forest (e.g., conservation easement, transfer to public land). The baseline scenario is conversion.
Non-CARB Project Types:
Afforestation – Planting trees on land not previously forested.
Reduced Emissions from Deforestation and Degradation (REDD) – Actions aimed at reducing illegal logging and land conversion (e.g., monitoring, patrolling, signage, community engagement)
CARB Eligibility Requirements
Accounting for Risk
Forest Buffer Account
An account that ARB uses to record carbon credits generated by carbon offset projects as insurance against unintended reversals (e.g., wildfire, storm damage).
Reversal Risk Rating
The calculated probability that a project will suffer an unintentional reversal during the project lifetime. It is typically 17.6% but can be reduced to 15.9% via fuels reduction treatments.
CARB Forest Carbon Offset Projects�Public Information
Credit Issuance Map: https://webmaps.arb.ca.gov/ARBOCIssuanceMap/
This map shows the boundaries of all forest carbon offset projects registerd with CARB and links to detailed information including offset project data reports.
Cap and Trade Program Dashboard: https://ww2.arb.ca.gov/our-work/programs/cap-and-trade-program/program-data/cap-and-trade-program-data-dashboard
Home page with links to a wide assortment of data and reports on the Cap and Invest program.
Compliance Offset Program: https://ww2.arb.ca.gov/our-work/programs/compliance-offset-program
Home page with links to a wide assortment of documentation pertaining to the Compliance Offset Program.
Market Transfers Reports: https://ww2.arb.ca.gov/our-work/programs/cap-and-trade-program/program-data/summary-market-transfers-report
Reports include average prices of forest carbon offset transactions compiled annually.
Lost Coast Forestlands IFM�Project Area
Lost Coast Forestlands IFM�Carbon Accounting
Lost Coast Forestlands IFM�Carbon Revenue & Expenses
Process
Get Organized
Feasibility Study
List Project with Registry
Forest Carbon Inventory
Process
Initial OPDR
First Annual Report
Verification
Reversals
Reduction of project total carbon stocks during a reporting period (e.g., harvest, wildfire, storm damage, thinning)
Unintentional reversal
Reversal resulting from events outside of landowner’s control (e.g., wildfire, storm damage)
Intentional reversal
Reversal resulting from planned activities or gross negligence on the part of landowner (e.g., over harvesting, clearing, excessive mortality from understory burn)
Landowner Responsibilities
Reversals, Continued
Unintentional Reversal
Intentional Reversal
Landowner’s Obligations
For 100 years following the final issuance of registry credits:
The End