Green Formül brings the fuel, electricity, natural gas and refrigerants an organization uses over a year, along with its business travel, into a single greenhouse gas inventory. Each source is converted to CO₂, CH₄ and N₂O with its own calculation method, and from there to CO₂ equivalent using global warming potential.
At most organizations, calculating the carbon footprint means entering hundreds of invoices into Excel by hand. Emission factors, units and densities differ from source to source; a single wrong row can throw off the entire inventory, and the next year the same work starts from scratch.
The inventory is kept in data entry screens structured by ISO 14064 category and Scope 1-2-3. Natural gas, electricity and water bills are read with Google Document AI and turned into consumption rows; emission factors and GWP values come from versioned libraries. Results are tracked through reports broken down by category, scope and location.
The company, its locations and the emission sources in use are defined.
Invoices are uploaded in bulk; OCR extracts consumption, dates and the invoice number.
Items such as fuel, refrigerants and travel are entered in source-specific tables.
Consumption is converted to CO₂ equivalent using the emission factor and GWP value.
Breakdowns by category, scope and location; cross analysis and export.
Natural gas, electricity and water bills are read with Google Document AI. Rules extract the invoice number, first and last meter-reading dates and consumption, and correct the mistakes OCR commonly makes; the result lands directly as a row in the data entry table.
Separate calculation strategies for fuel, biogas, refrigerant leaks, lubricants, electricity, hotel stays and flights. For flights, the distance between airports is calculated and short- and long-haul factors are applied.
Emission factors and GWP values are kept in a tree structure, by year and version. Past inventories stay the same even when a factor is updated.
Total emissions broken down by category, scope and location; shown as vertical or horizontal bars, donut and trend charts, and exported as CSV.
Emission intensity where categories and scopes intersect, on a heat map; see at a glance where the inventory is concentrated.
Parent and subsidiary hierarchy, company-specific logos and colors, usage limits. Administrators switch between companies in one click.
Inventory, data entry and reports. Screenshots were taken with anonymized data.
Data entry, calculation engine and reports
Next.js
React
MUI
ECharts
Redux ToolkitMulti-tenant API and company hierarchy
Java 17
Spring Boot 3
Spring Security
MySQLFrom invoice to consumption data
Document AIGoogle Cloud
AWS S3Shared Jekirdek Teknoloji infrastructure
Docker
Traefik
GitHub Actions
Prometheus
Sentry
