Sustainability reporting is planned in most businesses with a focus on strategy and communication; Consumption management remains on the operation and cost side. However, TSRS E1 climate items, CBAM embedded emissions calculation and Scope 2 inventory are based on the same question: “How much energy was consumed, from which source, in which period?” A sustainability report that cannot answer this question will collapse in audit. Consumption management—OSOS profile, invoice reconciliation, normalized consumption indicators (EnPI) and SPP net consumption accounting—is the measurable backbone of sustainability.
Why can't sustainability progress without consumption data?
Scope 2 emissions largely come from purchased electricity; If kWh data is unreliable, tCO₂e calculation is also unreliable. As highlighted in our Carbon Neutral, Net Zero and Scope 1–2–3 guide, many industrial plants look for quick wins on the electricity side — but without normalization of annual bill total, hourly profile and production volume, the reduction claim cannot be proven. In our TSRS Sustainability Reporting guide, E1 clauses require consistent energy inventory; For exporters within the scope of CBAM, facility-based electricity consumption is a mandatory input in the embedded emission calculation. Sustainability is not “writing a report”; is to establish an operational measurement infrastructure.
Electricity kWh
Scope 2 source
Can be measured by OSOS
~47%
Industry electricity share
Türkiye total consumption
1,000 TOE/year
EIVER threshold
Survey obligation
The data bridge between consumption management and sustainability
Consumption management monitors daily operation; sustainability speaks the language of annual commitment and reporting. The bridge is built on five data layers: (1) raw consumption — OSOS hourly/15-minute kWh; (2) verified consumption — period total confirmed by invoice reconciliation; (3) normalized performance — kWh/product, kWh/m² or kWh/tonne (EnPI); (4) generation impact—Solar self-consumption and net consumption after offsetting; (5) emission output — tCO₂e with the selected emission factor. The “measurement → analysis → action” cycle, which is explained in our article on the importance of energy management and monitoring, turns into the “inventory → reduction → reporting” cycle on the sustainability side.
| Consumption management output | Sustainability/regulation use |
|---|---|
| OSOS hourly kWh profile | Scope 2 inventory, peak load analysis, anomaly detection |
| Invoice reconciliation + archive | Audit trail, TSRS E1 data quality, proof of objection |
| EnPI (kWh/product, kWh/m²) | Reduction target evidence, ISO 50001 EnPI tracking |
| Reactive / demand alerts | Productivity project prioritization, cost-reduction report |
| Solar net consumption + offset | Scope 2 decline, YEK-G / market-based factor |
| Multi-site consolidation | Portfolio carbon inventory, facility ranking |
Consumption management minimum requirements for Scope 2
The choice of location-based and market-based methods in Scope 2 reporting requires consistency. The location-based calculation uses grid average emission factor × verified kWh; In the market-based account, YEKA-G or green certificate (certification in our YEK-G Green Electricity guide) comes into play. In both methods, the basic input is the same: the correct kWh by period. Common errors in manual Excel inventory — double counting, missing facility, wrong unit (kW vs kWh) — crash the report, as broken down in our kW vs. kWh glossary entry. The central profile described on our OSOS consumption monitoring page may be the “single source of truth” of the Scope 2 inventory.
TSRS E1 and EIVER: Same data, different format
TSRS E1 climate disclosures require energy consumption breakdown, reduction targets and transition plan. Within the scope of EIVER, industrial enterprises with 1,000 TEP and above are obliged to conduct energy audits, energy managers and ENVER reporting. The TEP account in our Energy Audit and EIVER guide combines different carriers (electricity, natural gas, fuel oil) in a single unit. Even though consumption management covers only the electricity side, OSOS + bill reconciliation verifies the largest component of the “energy consumption” line of E1. The TEP equivalent of electricity kWh can be calculated in our TEP calculation tool; Thus, the EIVER threshold and TSRS metrics are fed from the same inventory. The PDCA cycle in our ISO 50001 Energy Management System guide institutionalizes the continuous monitoring of study findings — consumption management software is the operational tool for this monitoring.
CBAM and export: Facility-based proof requirement
As explained in our Carbon Tax, CBAM and Türkiye guide, embedded emissions declaration is mandatory for cement, iron-steel, aluminum and fertilizer exports to the EU. Although improving the national electricity mix has reduced the Scope 2 average, plant-by-plant consumption data is still required — because efficiency, process heat, and electricity density vary from plant to plant. Consumption management; “Has the mitigation project been implemented?” with line-based submetering, OSOS profile and normalized EnPI. answers the question. The manufacturing scenario in our industrial energy management solutions targets this data model. The sustainability team sets strategy; the consumption management team produces evidence — when the two are not on the same platform, CBAM preparation is delayed.
GES and hourly offset: Operation that lowers Scope 2
The sustainability impact of a solar energy investment is measured by the net consumption reduction, not the installed power (kWp). As explained in our Hourly Settlement 2026 guide, profile mismatch (production at noon, consumption at night) increases net grid reception; This difference should remain visible in the Scope 2 inventory. The distinction between self-consumption and offset is detailed in our GES offset dictionary article. When inverter data and OSOS consumption are combined in our solar power generation monitoring module, self-consumption rate, avoided kWh and indirectly avoided tCO₂e can be reported. It is not enough to say "We installed solar power plant" in the sustainability report; It is necessary to say “net consumption decreased by this much, Scope 2 decreased by this much” — this calculation comes from the consumption management data.
Consumption management etc. without sustainability report. together
| Size | Invoice tracking only | Consumption management + sustainability integration |
|---|---|---|
| Data source | Monthly invoice PDF | OSOS + invoice reconciliation + EnPI |
| Reporting | Excel, periodic | TSRS E1, EİVER, CBAM format export |
| Mitigation evidence | "Invoice dropped" claim | kWh/product trend, audit trail |
| Solar impact | Emphasis on installed power (kWp) | Net consumption, self-consumption rate, offset |
| Audit risk | Data gaps, double counting | Meter sourced, reconciled inventory |
| cost benefit | Reactive penalty prevention | Reagent + carbon + regulation single data |
90-day implementation roadmap
- Days 1–30: Subscriber inventory, OSOS connection status, 12-month invoice archive; Create electricity kWh base for Scope 2.
- Days 31–60: Invoice–OSOS reconciliation routine, reagent/demand alarms; EnPI definition (kWh/product or kWh/m²).
- Days 61–90: Data transfer to TSRS E1 or CBAM template; Net consumption scenario if there is a solar power plant; KPI alignment with ISO 50001 or EIVER targets.
When this road map is combined with the sub-metering and OSOS architecture in our Energy Use Measurement in Industry guide, sustainability goals turn into operational KPIs. In our electricity bill tracking module, multi-site reconciliation and unit price control feed into the cost side of the same inventory — sustainability and finance meet in a single data model.
For whom is it a priority?
- Public and large-scale companies within the scope of TSRS — E1 energy data is mandatory
- Exporters under CBAM — facility-based electricity inventory
- Industry over 1,000 TEP — Monitoring EİVER study findings
- Multi-facility holding and OIZ — portfolio consolidation and ranking
- Industrial facilities with solar power plant — net consumption report after hourly clearing
- Supply chain with EU customers — Scope 2 transparency survey response
Conclusion: Sustainability requires operational discipline
If sustainability targets remain in PowerPoint, it creates panic during the reporting period; TSRS, CBAM and Scope 2 inventory will not be “reinvented” if consumption management is embedded in daily operation. OSOS profile, invoice reconciliation, EnPI and SPP net consumption account — are the measurable backbone of sustainability. ENOPTIMAL consumption management module offers this backbone with cost control (reagent, demand, unit price) on the same panel; When the production module and SPP data are combined, the reduction claim becomes evidence. Net Zero Roadmap: The long-term goals in our SBTi guide only make sense with reliable consumption data — measure first, commit later.