Why carbon markets matter
Nobody has an intuitionfor a tonne.
Which is exactly the problem. Every climate number is denominated in a unit almost no one can picture — so the price attached to it reads as an accounting trick rather than the cost of a real, physical thing.
Where we are
The atmosphere keeps a running total.
Carbon dioxide is not flushed out each year. It accumulates, and what accumulates is what warms. So the number that matters is not this year's emissions — it is the stock they add to.
38.1 Gt
Fossil CO₂ released in 2025
A record high, up 1.1% on the year before. Coal, oil and gas all rose.
Global Carbon Budget 2025 ↗42.2 Gt
Total CO₂, including land use
Fossil emissions plus 4.1 Gt from deforestation and other land-use change.
Global Carbon Budget 2025 ↗425.7 ppm
CO₂ in the atmosphere
52% above the pre-industrial level. This is the stock that drives warming — annual emissions add to it.
Global Carbon Budget 2025 ↗The consequences are physical, not political: warmer oceans, longer and hotter heatwaves, heavier rainfall where it rains and deeper drought where it does not, and a sea level that keeps rising for centuries after emissions stop. India sits at the sharp end of most of them — monsoon variability, coastal exposure, and heat that is already crossing the limit of what outdoor work allows.
Scale
This is one tonne.
Not a metaphor — the actual volume. As a gas at ordinary temperature and pressure, one tonne of CO₂ fills a sphere about ten metres across. You emit several of these a year.
Once the unit is physical, the rest of the argument stops being abstract. A price on a tonne is a price on that — and paying it is how the money reaches somebody who can keep it out of the air or take it back out.
The mechanism
What a price on a tonne actually does.
A carbon market is not a way to avoid cutting emissions. It is the mechanism that funds removals somebody else can do more cheaply than you can, and records that it happened.
- Cost
An emitter pays
For the emissions they cannot yet cut.
- Capital
A project is funded
Forestry, renewables, methane capture — work that would not otherwise be paid for.
- Proof
A registry verifies
An accredited third party checks the tonnes were real.
- Final
The credit is retired
Taken permanently out of circulation, against a stated period.
PRAN sits at the settlement step only. It does not issue credits, verify them, or decide that a project is good — registries and accredited verifiers do that.
How it works globally
Two markets, doing different jobs.
Almost every confusion about carbon credits comes from treating these as one thing. They have different buyers, different rules, and different consequences for getting it wrong.
Compliance
A government caps you.
A regulator sets a limit on what you may emit and issues or auctions allowances up to that limit. Emit less and you sell the surplus; emit more and you buy. The cap falls over time, so the price is a policy instrument, not a market opinion. The EU ETS, China’s national ETS and India’s CCTS all work this way. Participation is not optional.
Voluntary
You choose to act.
No regulator compels you. A developer runs a project, an independent auditor verifies the result, and a registry issues serialised credits you can buy and retire. Nothing forces quality here except the standard the credit was issued under — which is exactly why the standard, the vintage and the registry record matter more than the price.
28%
of global greenhouse gas emissions now sit under a direct carbon price — across 43 carbon taxes and 37 emissions trading systems. There were 5 such instruments in 2005; there are 80 today, raising over USD 100 billion a year.
World Bank — State and Trends of Carbon Pricing 2025 ↗Which also says the quiet part: roughly seven tonnes in ten still carry no price at all. The mechanism works — it is simply not yet pointed at most of the problem.
What we believe
Four positions we'll defend.
Price signals move capital
When emissions carry a real cost, capital flows to the projects that cut them. A functioning market turns intent into funded work.
Verification is everything
A credit is worth exactly what stands behind it. We list registry-issued projects and facilitate transfers you can check.
Reduce first, then offset
Offsetting is for what you cannot yet eliminate. Every recommendation leads with real reductions, because that is what actually helps.
Honest claims protect everyone
We never say “carbon neutral”. We state a fact: credits were purchased and retired, for a stated period. Careful language protects the buyer and the market.
The targets are set. The arithmetic is not optional.
These are the published commitments every compliance framework is now calibrated against. Nothing here is our estimate.
- India's net-zero targetThe national commitment PRAN's home market is building toward. — India's Long-Term Low Emission Development Strategy, UNFCCC, 2022
- 2070
- Paris temperature limitThe threshold every compliance framework is now calibrated against. — Paris Agreement, UNFCCC, 2015
- 1.5°C
- Emissions still risingGlobal greenhouse gas emissions grew again in 2023, not fell. — UNEP Emissions Gap Report, 2024
- +1.3%
What can be done
In this order. It is not interchangeable.
Credits sit at the end of this list, not the start. Anyone who sells them to you as a substitute for the first three steps is selling you a liability.
Measure what you actually emit.
Not an estimate of the industry, yours. Scope 1 is what you burn, Scope 2 is the electricity you buy, Scope 3 is your supply chain — and Scope 3 is usually the majority and the part everyone skips.
Cut what can be cut.
Efficiency, process change, switching fuel, cutting waste. This is the only step that reduces the physical total, and it is almost always cheaper than paying for the same tonne twice.
Switch the energy underneath it.
Contracted renewable supply, on-site generation, electrified process heat where the technology exists. This shrinks the baseline permanently rather than offsetting it annually.
Retire verified credits against the residual.
What is genuinely left after the first three — the emissions no current technology lets you remove. Credits fund somebody else's reduction and record that it happened. They do not cancel your obligation to keep working down the list.
Sources
Don't take our word for any of it.
Every figure on this page comes from one of these. They are the primary documents, not summaries of them.
Now put a number on your own.
The calculator estimates a footprint on cited factors. It never issues credits, and it never calls anything neutral.