How to Evaluate Carbon Project Quality

The best forest carbon projects are the ones that hold up no matter which direction you look. The ecology is sound, the community genuinely benefits from the project and is invested in its success, the carbon accounting is conservative, and the whole thing was built to last generations, not just to pass verification. Getting there takes real, dedicated work across many domains at once, which is exactly why it's worth understanding how that work is being planned and executed before committing capital to a project.

That's the idea behind how we approach project quality at EldHollow. A project scores well by excelling across a variety of categories, not by being exceptional in one and hoping that carries the rest. A project can have a conservatively engineered baseline and still owe more attention to the people who live next to it. It can have deep community support and still need a more conservative approach to measuring its own carbon. Good diligence means giving every part of a project the same level of attention, not just the parts that are easiest to document.

Here are the five categories we look at closely in every review.

1. Social Harms, Benefits, and Durability

Every forest carbon project sits on land that someone lives near, works, or depends on for their livelihood. The strongest projects treat that relationship as central to their design: real benefit sharing, secure land tenure, genuine input from the community on how the project is designed, and an open channel for raising concerns as they arise. In some parts of the world, these things can be real drivers of project durability. In general, it's worth asking: who benefits from project activities, is that benefit sharing equitable, and has the project actually engaged the people it affects in a meaningful way?

2. Ecological Harms, Benefits, and Durability

A reforestation project in a fire-prone region calls for a different management plan than one in a wet tropical forest, and the best projects are built around that distinction rather than a generic template. This category comes down to species selection, silvicultural choices, and how well a project is prepared for the disturbances common to its specific location, whether that's fire, pests, or storms. A management plan that's genuinely tailored to its local ecosystem is one of the clearest signals of a well-run project.

3. Additionality and Project Baselines

This is the category that serves as the backbone of project crediting. Additionality asks whether carbon sequestration would have happened without the project. Baselines describe how much carbon the land would have gained or lost under business as usual. Every protocol answers these questions a little differently, and developers have real latitude in how they build their own baseline, which is exactly why an independently generated baseline like EldHollow's adds so much value. When a project's baseline estimates match closely with an independent third party analysis, that's a strong sign the underlying assumptions are sound.

4. Measurement, Monitoring, Reporting, and Verification (MMRV)

A well-designed project earns trust through its measurements. This category is about how a project counts its trees, whether by hand, by remote sensing, or some mix of the two, and how those measurements become carbon stock estimates through allometric equations and growth models. Every method has its own strengths and limits, and conservative estimates are a genuine mark of quality here. A project that uses reasonable models to estimate its carbon stock, rather than try to increase crediting by using models beneficial to its carbon accounting, is doing exactly what a high quality project should.

5. Leakage

Leakage is where a project's climate benefit meets the wider economics around it. Protecting one forest can shift pressure to a neighboring forest if that pressure isn't addressed, and a project's job is to plan for that possibility. Leakage is genuinely difficult to quantify, and the science behind it is still developing, so what stands out here is effort: a project that studies its own leakage risk carefully, monitors for it on an ongoing basis, and has a real mitigation strategy.

Real quality shows up everywhere

Real project quality means excelling at all aspects of project design. A project that's genuinely strong tends to show that strength everywhere you look, by benefiting the communities it impacts, respecting local ecological processes, using a reasonable baseline, implementing sound measurements, and reasonably accounting for leakage. The projects worth backing are the ones built to have meaningful impacts over generations, and the diligence process is how you find them.

References

Dubayah, R., Blair, J. B., Goetz, S., Fatoyinbo, L., Hansen, M., Healey, S., Hofton, M., Hurtt, G., Kellner, J., Luthcke, S., Armston, J., Tang, H., Duncanson, L., Hancock, S., Jantz, P., Marselis, S., Patterson, P. L., Qi, W., & Silva, C. (2020). The Global Ecosystem Dynamics Investigation: High-resolution laser ranging of the Earth's forests and topography. Science of Remote Sensing, 1, 100002. https://doi.org/10.1016/j.srs.2020.100002

Guizar-Coutiño, A., Jones, J. P. G., Balmford, A., Carmenta, R., & Coomes, D. A. (2022). A global evaluation of the effectiveness of voluntary REDD+ projects at reducing deforestation and degradation in the moist tropics. Conservation Biology, 36(6), e13970. https://doi.org/10.1111/cobi.13970

West, T. A. P., Wunder, S., Sills, E. O., Börner, J., Rifai, S. W., Neidermeier, A. N., Frey, G. P., & Kontoleon, A. (2023). Action needed to make carbon offsets from tropical forest conservation work for climate change mitigation. Science, 381(6660), 873–877. https://doi.org/10.1126/science.ade3535

Integrity Council for the Voluntary Carbon Market. (2024). Core Carbon Principles, Assessment Framework and Assessment Procedure (Version 3). https://icvcm.org/core-carbon-principles/