NIS B-1 for Holding Company with Excel / Proceso Manual: Data Integration 2026
NIS B-1 is the standard issued by CINIF that requires ALL Mexican companies applying NIF — not just stock market issuers — to report 30 basic sustainability indicators starting in 2026 with FY2025 data. Its universal scope makes it the highest-impact standard in Mexico by number of affected companies. The IBSO indicators cover environmental, social, governance, and economic dimensions and are designed as the minimum auditable baseline.
Excel is the 'de facto ERP' for sustainability in most Mexican companies — even those with SAP or Oracle use Excel to compile ESG data across departments. The fundamental problem for 2027 assurance is that Excel has no chain of custody: any cell can be modified without a record, emission factor calculations are not auditable, and manual consolidation across plants and periods introduces systematic errors. Climatta resolves this with a structured upload process from validated Excel templates, automatically creating the audit trail the assurer needs: who captured each data point, when, from what source, and whether it was modified.
Data Already in Your Excel / Proceso Manual
Your Excel / Proceso Manual already has most of the data NIS B-1 requires. Climatta extracts it automatically without manual work.
| NIS B-1 Requirement | Excel / Proceso Manual Module | Available |
|---|---|---|
| Reporting of all 30 Basic Sustainability Indicators (IBSO) organized across the four ESG+E pillars | Hojas de cálculo Excel | ✅ |
| Quantification of GHG emissions Scope 1 and 2 in metric tons of CO₂ equivalent with documented methodology | Correo electrónico | ✅ |
| Measurement and reporting of total water consumption and its intensity relative to business volume | Formatos PDF | ✅ |
| Disclosure of solid waste generation and disposal, and hazardous waste management practices | Reportes manuales | ⚠️ |
| Mandatory social indicators: employee turnover, accident rate, gender pay gap, and training hours per employee | Google Sheets | ⚠️ |
Electricity and gas invoices in PDF — data available but scattered across emails and folders with no structure
Fleet fuel records in ad-hoc formats by driver — fragmented, with no auditable chain of custody
Waste reports from environmental vendors in paper or PDF — not integrated into the sustainability reporting process
Payroll and HR in proprietary spreadsheets — social indicators calculable but with manual error risk and no version control
Why Excel from Excel / Proceso Manual Will Not Pass the 2027 Assurance
No audit trail: the auditor cannot trace the data back to its source in Excel / Proceso Manual
Formula error risk: one miscalculated cell invalidates the entire report
No change history: impossible to demonstrate data integrity over time
Excel / Proceso Manual → Excel → report = 3 manual transformations with no governance control
How Climatta Connects with Excel / Proceso Manual
Excel is the 'de facto ERP' for sustainability in most Mexican companies — even those with SAP or Oracle use Excel to compile ESG data across departments. The fundamental problem for 2027 assurance is that Excel has no chain of custody: any cell can be modified without a record, emission factor calculations are not auditable, and manual consolidation across plants and periods introduces systematic errors. Climatta resolves this with a structured upload process from validated Excel templates, automatically creating the audit trail the assurer needs: who captured each data point, when, from what source, and whether it was modified.
Secure connection to Excel / Proceso Manual
Climatta connects to Excel / Proceso Manual via API or certified connector, installing nothing on your server.
Automatic module mapping
Modules Hojas de cálculo Excel and Correo electrónico are automatically mapped to NIS B-1 indicators, with no manual configuration.
Report ready for assurance
Complete report in CNBV/CINIF format with traceability of every data point back to Excel / Proceso Manual. The auditor has the evidence they need.
4 benefits of connecting Excel / Proceso Manual with Climatta
Time
From weeks to hours in NIS B-1 data collection from Excel / Proceso Manual
Risk
Full traceability: every data point audited back to its source in Excel / Proceso Manual
Auditability
Immutable change history — the 2027 auditor approves it
Cost
No integration consultancy needed: Climatta connects to Excel / Proceso Manual in 2 weeks
FAQ — Excel / Proceso Manual + NIS B-1
We connect with your Excel / Proceso Manual in 2 weeks. No manual integration.
Over 50 Holding Company companies already report NIS B-1 automatically with Climatta.