Starting a net zero programme can feel overwhelming. You need to understand your organisation’s carbon footprint, collect data from different teams, identify emissions hotspots, set realistic targets and demonstrate progress. At the same time, you may be working with limited budgets, incomplete information and spreadsheets that were never designed to handle the entire process.
The good news is that you do not need to buy every sustainability platform on the market to get started.
If I were building a net zero programme from scratch in 2026, I would focus on a small set of tools that solve specific problems. I would start with emissions accounting, introduce a practical way to manage data, and only invest in more advanced software when the programme genuinely needs it.
1. Start With the GHG Protocol, Not a Software Subscription
Before choosing a platform, I would establish how the organisation will measure its greenhouse gas emissions.
The GHG Protocol provides widely used standards for corporate emissions accounting, including Scope 1, Scope 2 and Scope 3 emissions. These categories help organisations understand emissions from their direct operations, purchased energy and wider value chains.
This distinction matters because a company can reduce electricity consumption while still having substantial emissions associated with suppliers, transportation, purchased materials or business travel.
I would use the GHG Protocol as the foundation for the programme and document the assumptions behind every calculation.
Why I would start here: Good software cannot compensate for unclear accounting boundaries, inconsistent data or unreliable assumptions. Establishing the methodology first makes every later decision more useful.
2. Choose Carbon Accounting Software That Fits Your Organisation
Once the measurement approach is clear, I would shortlist carbon accounting platforms. The right choice depends on company size, reporting requirements, data availability and budget.
Here are four platforms I would investigate.
Persefoni
I would consider Persefoni for an organisation that needs structured carbon accounting, emissions reporting and greater visibility into its carbon footprint.
It is particularly worth evaluating when sustainability reporting involves multiple departments, complex calculations or a need for documented evidence.
Before choosing it, I would check how well its data workflows fit the organisation’s existing systems and reporting requirements.
Watershed
Watershed would be on my shortlist for companies looking to measure their emissions and connect carbon accounting with practical decarbonisation planning.
I would evaluate it where the sustainability team needs to understand emissions hotspots and identify opportunities to reduce them across business operations and the supply chain.
The important question is not simply how many dashboards the platform provides. It is whether the information helps the team decide what to do next.
IBM Envizi
IBM Envizi is another platform I would evaluate, especially for larger organisations managing sustainability, energy and environmental data across multiple business units.
A company with several facilities, different reporting teams and substantial historical data may benefit from a more integrated data-management approach.
However, I would assess implementation requirements and integration costs before making a decision.
Sweep
Sweep is another option to investigate for organisations that want to manage emissions data and sustainability performance across their operations and value chains.
I would examine how it handles supplier information, internal accountability, reporting workflows and the organisation’s particular decarbonisation priorities.
My recommendation would be to shortlist two or three platforms, arrange demonstrations using real business scenarios, and compare the results rather than selecting the one with the most impressive presentation.
3. Keep Excel or Google Sheets for Early-Stage Data Collection
I would not automatically replace spreadsheets on day one.
For a small organisation, spreadsheets can be useful for gathering electricity bills, fuel consumption, travel records, waste information and supplier data.
A simple tracker can record the activity, reporting period, responsible department, source document, calculation method and data quality.
This approach is inexpensive and helps teams understand where their information comes from.
However, I would introduce clear limits. Spreadsheets become difficult to manage when multiple people edit different versions, calculations are copied incorrectly or evidence is scattered across email attachments.
My rule would be simple: Use spreadsheets to establish the process, but move to a dedicated platform when the volume, complexity or audit requirements justify it.
4. Add Power BI When the Team Needs Better Visibility
Collecting emissions data is only part of the job. Sustainability managers also need to explain what the numbers mean to finance teams, operational leaders and senior management.
This is where Microsoft Power BI could be useful.
I would use it to build dashboards showing emissions by business unit, facility, emissions scope and reporting period. Where reliable data is available, the team could also track progress against reduction targets and compare performance across locations.
For example, a dashboard might reveal that electricity-related emissions are falling while purchased goods remain a major source of the organisation’s footprint.
That insight helps direct attention towards the areas where further investigation is needed.
Power BI is a reporting and analytics tool, not a substitute for a carbon accounting methodology. The quality of the dashboard depends on the quality of the underlying data.
5. Use a Practical System to Track Reduction Actions
A net zero programme should not become an annual reporting exercise.
I would create an action tracker that assigns each reduction initiative to a named owner, with a deadline, expected outcome and method for measuring progress.
For example, an organisation might introduce energy-efficiency improvements, review business travel, purchase lower-carbon materials or work with suppliers to improve emissions data.
A basic project-management tool can support this process. A dedicated sustainability platform may also provide relevant workflows, depending on the organisation’s requirements.
The key is accountability. Every action should have someone responsible for moving it forward, and the team should regularly review whether the expected benefits are being achieved.
6. Use Science-Based Targets to Guide the Programme
After establishing the emissions baseline, I would investigate whether the organisation should develop science-based climate targets.
The Science Based Targets initiative provides frameworks and resources for companies developing emissions-reduction targets.
Its Corporate Net-Zero Standard Version 2.0 was published in 2026, so organisations planning new targets should review the current requirements and implementation timelines before deciding which framework version applies.
I would not select software simply because a vendor mentions target alignment. I would verify whether the platform supports the calculations, documentation and reporting processes the organisation actually needs.
Targets should guide operational decisions, not exist only as statements on a website.
7. What I Would Implement During the First 90 Days
If I were starting from zero, I would keep the first three months focused.
| Timeline | Priority | Practical outcome |
|---|---|---|
| Days 1–30 | Define boundaries and gather available data | Initial emissions inventory and data-gap assessment |
| Days 31–60 | Compare software and validate calculations | Shortlist, documented methodology and improved data collection |
| Days 61–90 | Identify reduction opportunities and assign owners | Initial action plan, responsibilities and progress dashboard |
These stages are a practical starting point, not a guarantee that every organisation can complete a full emissions inventory in 90 days. Complex supply chains, missing records and multiple reporting locations may require considerably more time.
I would also avoid promising immediate emissions reductions before establishing a credible baseline.
So, Which Sustainability Tools Would I Choose First?
If I were starting a net zero programme in 2026, my initial toolkit would be straightforward:
- GHG Protocol: Establish the accounting methodology.
- Excel or Google Sheets: Organise early-stage data collection.
- Persefoni, Watershed, IBM Envizi or Sweep: Evaluate dedicated carbon management options.
- Power BI: Improve reporting and communicate progress.
- A project-management tool: Assign responsibilities and monitor reduction actions.
- Science Based Targets initiative resources: Inform target-setting decisions.
I would not purchase all these tools immediately. I would select only what the organisation needs at its current stage.
A small business with limited emissions data may need a different setup from a multinational with complex supplier networks and formal reporting obligations.
Ultimately, the strongest net zero programme is not the one with the largest software budget. It is the one that measures emissions consistently, identifies meaningful reduction opportunities, assigns clear responsibilities and demonstrates progress over time.