Corporate Decarbonisation Strategy: A Practical Step-by-Step Guide

A corporate decarbonisation strategy is a company's plan to reduce its greenhouse-gas emissions — from an accurate baseline, through prioritised reduction projects, to a financed implementation roadmap with measurable targets. The most robust strategies are built on economics: the first projects reduce both emissions and operating costs, which funds the later, harder steps.

Step 1: Establish an emissions baseline

Measure emissions using the GHG Protocol Corporate Standard, the framework referenced by CSRD/ESRS E1, SBTi and most lenders.

Choose a base year that represents normal operations, document methodologies and emission factors, and report Scope 2 both location-based and market-based. For deeper guidance see Scope 1, Scope 2 and Scope 3.

Relevant Scope 3

Scope 3 often makes up most of a company's footprint, but you do not need all 15 categories in equal depth. Use the Scope 3 Standard screening criteria — size, influence, stakeholder relevance — and focus on the categories that are material and that you can influence, typically purchased goods, upstream transport and use of sold products.

Step 2: Identify reduction opportunities

Build a long list per emission source:

• Energy efficiency — HVAC, lighting, motors, compressed air, insulation, heat recovery (practical guide).
• Fuel switching and electrification — heat pumps, electric boilers, electric or alternative-fuel vehicles.
• Renewable electricity — on-site PV, PPAs, green tariffs.
• Fleet and logistics — route optimisation, load factor, driver behaviour.
• Refrigerants — leak control, low-GWP replacements.
• Supply chain — supplier engagement, lower-carbon materials, design changes.

Step 3: Prioritise projects — cost vs emissions impact

For every project, quantify:

• CAPEX — upfront investment;
• OPEX change — annual change in operating costs (usually a saving);
• simple payback and ROI;
• annual CO₂e reduction (tonnes);
• cost per tonne abated = (annualised CAPEX − annual saving) ÷ annual tonnes reduced.

A negative cost per tonne means the project saves money while reducing emissions.

Example — a manufacturer with 10,000 tCO₂e (Scope 1 + 2):

*Annualised CAPEX over 10 years, no discounting, for illustration.

Plotted as a marginal abatement cost curve, the first four projects pay for themselves and deliver about 2,150 tCO₂e (21.5%). The heat pump costs money per tonne today but becomes positive with higher gas or carbon prices — a candidate for the second wave, or for financing that improves its economics.

Step 4: Build the implementation roadmap

Sequence projects in waves:

1. Wave 1 (0–12 months): no-CAPEX and short-payback efficiency. Savings fund later waves.
2. Wave 2 (1–3 years): larger efficiency and renewable investments, fleet optimisation.
3. Wave 3 (3–7 years): electrification of heat and transport, process changes, supplier programmes for Scope 3.

Set targets for each wave. If you aim for validation, follow the SBTi Corporate Net-Zero Standard. Under ESRS E1, companies in scope disclose their transition plan, targets and the CAPEX and OPEX behind them.

Step 5: Finance the projects

Decarbonisation projects with strong savings are bankable. Options include:

• green loans for eligible efficiency, renewable and clean-transport projects;
• Sustainability-Linked Loans where the margin is linked to KPIs such as Scope 1+2 reduction — governed by the SLL Principles;
• leasing, energy-performance contracts and public grants or preferential loans.

Structure financing so that annual savings cover repayments wherever possible.

Step 6: Monitor progress

• Track energy, fuel and emissions monthly; report annually against the base year.
• Compare actual savings with business-case assumptions.
• Recalculate the base year after significant acquisitions or divestments.
• Keep an audit trail of data and emission factors for assurance and lender reporting.

Common mistakes

• Setting targets before building a reliable baseline.
• Treating decarbonisation as a reporting exercise rather than an investment programme.
• Starting with the most expensive projects and losing board support.
• Ignoring financing options that make medium-payback projects cash-positive.

A decarbonisation strategy is the natural continuation of a corporate cost reduction strategy and a central part of business resilience against energy-cost volatility.

How Redigo Carbon helps

Redigo Carbon calculates your Scope 1, 2 and relevant Scope 3 baseline, identifies decarbonisation and energy-efficiency opportunities, and quantifies for each one the required investment, expected financial savings, payback and CO₂ reduction potential. It then connects your projects to financing opportunities, including green loans and Sustainability-Linked Loans. See decarbonisation planning and the carbon footprint module.

See which decarbonisation projects would also cut your costs. Book a demo to discover your savings opportunities, investment requirements, expected savings, potential CO₂ reductions and financing options.