VCUs and RECs are two different environmental products that get confused often, because they’re both connected to clean energy. Understanding the difference matters because they have different buyers, different prices, and different eligibility rules.
VCU: Verified Carbon Unit
A VCU represents one tonne of CO₂-equivalent emissions avoided or removed. It’s a carbon product. Issued under a standard like Verra’s VCS and verified by independent auditors.
VCU buyers are typically:
- Corporates offsetting their carbon footprint
- Compliance buyers under various international and domestic schemes
- Voluntary market participants pursuing net-zero targets
VCU pricing is driven by carbon market dynamics: supply and demand for emission reductions, the rigour of the methodology, the credit’s vintage, and the project’s co-benefits.
REC: Renewable Energy Certificate
A REC represents one megawatt-hour of electricity generated from a renewable source. It’s an energy product. RECs track the renewable attribute of electricity, separate from the electricity itself.
REC buyers are typically:
- Corporates pursuing renewable energy targets (RE100 commitments, for instance)
- Buyers needing to substantiate “100% renewable” claims for marketing or reporting
- Compliance buyers under specific renewable energy mandates
REC pricing reflects renewable energy market dynamics rather than carbon market dynamics: different buyers, different price drivers.
Can the same MWh generate both?
Generally, no. Standards like Verra prevent double-counting: a unit of generation claimed as a VCU can’t also be sold as a REC, and vice versa. The choice between the two depends on your installation’s eligibility and the market opportunity.
Our primary product is VCUs. RECs are available on request, typically for installations that don’t qualify for VCU pricing, or where a buyer specifically wants RECs. If you want to discuss RECs specifically, contact us.