Internal carbon price

An internal carbon price is a monetary value, expressed per tonne of CO2 equivalent, that a company voluntarily applies to its own activity to steer its decisions. It is neither a tax nor a market price, but an internal management tool that translates emissions into a tangible economic cost.

The logic is simple: if every tonne of greenhouse gases carries a price, carbon-intensive options stop looking free and the company can compare alternatives against an explicit climate criterion. In this way, the internal carbon price becomes a lever to redirect capital toward low-carbon options.

Forms of internal carbon pricing

In practice, three main forms are usually distinguished, and they are not mutually exclusive:

• Shadow price: a notional price that is not actually charged, but is built into investment and project appraisal (capex) and into risk analysis. It allows the company to assess how a future cost of carbon would affect returns.
• Internal carbon fee: a real charge levied on business units based on their emissions. The proceeds are often pooled into a fund used to finance decarbonisation projects.
• Implicit price: the de facto cost of the abatement measures the company has already taken, derived after the fact from the investment made and the emissions avoided.

What it is for

Companies adopt an internal carbon price with several complementary aims:

• Redirect investment toward low-carbon technologies and processes.
• Stress-test the business model against future carbon costs.
• Anticipate regulation, such as the EU Emissions Trading System or the Carbon Border Adjustment Mechanism.
• Accelerate progress toward climate targets and decarbonisation.

In this way, the internal price connects climate strategy with day-to-day financial decisions.

Relationship with the market and targets

The internal carbon price draws on the real prices of the emissions market and on the cost of carbon credits, but it responds to the company's own governance. It can also be linked to its carbon budget to spread effort over time.

Initiatives such as CDP gather information on companies that use or plan to use an internal carbon price. Price levels vary widely from one company to another, and it is considered good practice to align them with science-based or regulatory trajectories rather than setting them arbitrarily.

What it means for your company

• Decide which form best fits your organisation: a shadow price for investment decisions, an internal fee to mobilise funds, or both.
• Set a level consistent with expected regulation and with your reduction targets, and review it periodically.
• Define the scope of application and be transparent about how it influences decisions.

How Manglai helps you

Applying an internal carbon price rigorously requires measuring emissions well and understanding where they come from. Manglai helps you calculate and structure your carbon footprint so you can assign a reliable value to each tonne and make better decisions. Discover how Manglai can help you embed climate into your strategy.