Carbon credit pricing isn’t a fixed number. It varies by project type, methodology, vintage, geography, and what a particular buyer is willing to pay. Here’s how to think about it for South African solar VCUs specifically.
What VCUs are priced against
In South Africa, voluntary carbon credit prices are anchored to the SA carbon tax rate. The carbon tax rises every year under legislation, and VCU prices broadly track that rise. The logic is simple: emitters who are taxed for every tonne of CO₂ they release will pay up to a certain fraction of that tax to buy a credit that offsets the same tonne. That fraction depends on market conditions at the time of sale.
Your detailed proposal includes revenue projections based on the current carbon tax trajectory. The public carbon tax schedule is the baseline; actual sale prices depend on when credits issue and who’s buying.
What drives variation around the benchmark
A few factors push prices up or down:
- Vintage. The year the credit was generated matters. Recent vintages typically price higher than older ones, especially as Verra and buyers favour more recent emission reductions.
- Co-benefits. Credits with documented social or biodiversity co-benefits often price above standard credits. South African solar credits don’t have major co-benefit premiums currently, but the project type, renewable energy displacing a high-carbon-intensity grid, is well regarded.
- Buyer type. Compliance buyers using credits against their SA carbon tax obligation often pay more than pure voluntary buyers, because compliance demand is structurally less price-sensitive.
- Volume. Large block sales typically price slightly below smaller sales due to volume discounts. Smaller, bespoke lots can carry a premium for buyers who want specific project profiles.
Why South African solar VCUs price favourably
Two reasons.
The SA carbon tax framework provides a domestic floor. Even if global voluntary carbon market prices weaken, SA VCU prices have downside support from the tax mechanism. An SA emitter buying credits to reduce tax liability has a very specific reason to keep paying; that reason doesn’t disappear when international sentiment does.
Compliance demand is structurally growing. As the carbon tax rate rises and more SA emitters become tax-liable, demand for compliance-eligible credits grows in parallel. This makes SA VCUs less correlated with the global voluntary market and more responsive to local fundamentals.
These dynamics are why we focus specifically on South African C&I solar. Local credits sold into a local compliance-adjacent demand pool tend to price more favourably than internationally-traded equivalents.
What your proposal will tell you
Your detailed proposal, issued after we confirm eligibility, includes:
- A 10-year revenue projection based on your specific installation size, commissioning date, and location
- The revenue share split between you and Captive Carbon
- Assumptions about carbon tax escalation and market conditions
- Timing of first issuance and expected payout schedule
The learn hub gives you the mechanics. The proposal gives you the numbers.