A procurement team copies “1.3 million solar-powered corrugated boxes” into a customer report as a completed result, only to find that the primary source says the boxes are scheduled to be applied at an annual scale of about 1.3 million. Sustainability procurement and sales teams must classify the status and scope of generation, site-level electricity, and product application before combining them into one sentence. The copy-ready renewable-electricity claim-to-evidence table below separates claims that may be used, used with conditions, or held.
What the Primary Source Confirms
Tailim Packaging’s 2025 Sustainability Report discusses solar generation and a customer box application in the same special feature. The figures, however, do not all have the same denominator or time boundary.
| Item | What the report states | Scope and period | Status | Safe wording |
|---|---|---|---|---|
| Solar generation | 7,130,070kWh at Cheongwon Campus and 2,675,856kWh at Sihwa Plant | 2025 indicators; the report footnote limits Sihwa’s figure to April–December 2025 | Reported figure | “Approximately 9,806MWh reported for 2025” with the period note |
| Renewable-energy conversion rate | 23.2% | The report labels the scope Cheongwon/Sihwa | Reported figure with a limited scope | “23.2% for Cheongwon Campus and Sihwa Plant” |
| Electricity displaced by solar | 27% of total electricity use at Cheongwon and 18% at Sihwa | Separate site-level electricity boundaries | Reported figure | Do not extend the two-site figures to the company as a whole |
| Estimated carbon reduction | About 2,639tCO2e | Presented as an expected reduction with an electricity emission factor of 0.4173tCO2e/MWh | Estimate | “The reduction estimated in the report” |
| Energy used in box production | The company says at least 20% solar energy is used in the production process | The E-Land Retail collaborative box case | Company statement | Do not treat it as recycled content or a company-wide electricity share |
| Box quantity | Scheduled for application to about 1.3 million boxes annually | Customer application plan | Plan | “An annual application plan covering about 1.3 million boxes” |
| Equipment expansion | Install solar systems at 80% of all sites by 2028 | Future installation plan | Plan | Do not present it as the current installation or renewable-electricity rate |
The 23.2% figure is explicitly marked “Cheongwon/Sihwa” in the report. Calling it Tailim Packaging’s company-wide renewable-energy share changes the denominator. The 1.3 million-box figure also cannot be used as a completed result: the operative wording in the report is that application is planned.
A News1 article published on July 23, 2026 describes 23.2% as the renewable share of total energy use and says about 1.3 million boxes were produced in the prior year. Where that wording conflicts with the scope and status in the company’s primary report, the primary source should control. This draft therefore uses News1 only as background confirming the announcement and industry context; all numerical wording follows the report.
Four Links Between Renewable Electricity and a Product Claim
The presence of solar equipment does not, by itself, prove that a specific corrugated box was produced with an evidenced allocation of that electricity. A defensible external claim needs at least four linked records.
- Generation record: Establish which system at which site generated how much electricity and when.
- Site-use record: Separate self-consumption from exported surplus and compare it with total site electricity use for the same period.
- Production link: Connect the box’s plant, line, production date, production order, and lot to the relevant electricity period.
- Customer-claim record: Preserve delivered quantity, claim wording, accounting boundary, and approver while separating plan from actual result.
If any link is missing, “a box made at a site with solar panels” and “a box with product-level renewable-electricity evidence” must not be treated as equivalent statements.
Copy-Ready Renewable-Electricity Claim-to-Evidence Table
This is an editorially proposed evidence form, not an official Tailim procedure. Do not invent pass rates or tolerances from the public sources; enter the organization’s approved verification rules and customer contract requirements.
| Proposed claim | Scope and period to enter | Required evidence | Current source status | External wording decision | Owner, action, and trigger |
|---|---|---|---|---|---|
| “9,806MWh of solar generation in 2025” | Cheongwon for 2025; Sihwa for April–December 2025 | Meter and inverter raw data, monthly roll-up, report calculation | Public figure confirmed | Conditional use with period note | Energy owner reconciles raw data to the report; retrigger approval if the figure changes |
| “23.2% renewable-energy conversion rate” | Denominator and calculation period for Cheongwon/Sihwa | Site electricity use, self-consumed solar power, calculation definition | Public scope is Cheongwon/Sihwa | Prohibited as a company-wide rate | ESG owner locks site, denominator, and period into the wording before release |
| “At least 20% solar energy used in production” | Plant, line, order, and production period | Allocation method, production order, line/time record, verification owner | Company case statement confirmed; product-level allocation evidence is not public | Conditional use or hold pending supplier evidence | Procurement requests the calculation boundary and order linkage before finalizing the specification |
| “Applied to about 1.3 million boxes annually” | Customer, SKU, start date, planned quantity, actual deliveries | Customer approval, POs, delivery records, monthly actuals, change history | Plan in the primary source | Do not describe as completed output | Sales updates actual deliveries and separates plan from result before period close |
| “Approximately 2,639tCO2e reduced” | Emission factor, generation, self-use/export boundary, baseline | Calculation file, factor source, verification date, double-counting check | Estimate in the report | Do not present as verified actual reduction | ESG owner reviews method and retains “estimated” until verification is complete |
| “Contributes to customer Scope 3 reduction” | Customer accounting boundary and applicable category | Customer methodology, supplier data, double-counting control | Directional claim; no public quantified result | Hold quantified reduction | Customer ESG team agrees the boundary in writing and uses only approved wording |
Records Each Role Should Check
Energy and facilities should retain monthly raw data for generation and use and separate self-consumption from exported surplus. System capacity or annual generation alone must not be turned into a product allocation rate.
Production and quality should lock the customer SKU, plant, line, work date, production order, and lot. If electricity is allocated across times, lines, or products, the allocation rule and change history must be preserved.
Procurement and sustainable sourcing should ask for more than a yes/no answer to “Was solar power used?” The request should cover the accounting boundary, site, period, self-consumed volume, product-order linkage, and verification owner. A public sustainability report is not a product certificate.
Sales and customer ESG should keep planned quantities and delivered actuals in separate columns. The customer file should preserve the version of the primary source, supplier response, and internally approved wording, while preventing the same reduction from being claimed once as supplier Scope 2 and again as customer Scope 3.
Conditions That Require a Hold
Do not finalize quantified wording such as “renewable-electricity corrugated,” “solar-powered packaging,” or “Scope 3 reduction” in a specification, customer report, or advertisement if any of the following applies:
- The 23.2% denominator is described as company-wide rather than Cheongwon/Sihwa
- The April–December period note for Sihwa’s 2025 figure is omitted
- The 1.3 million-box plan is not separated from actual production and delivery
- No method connects the production order and lot to the site electricity record
- Self-consumed electricity is not separated from exported surplus
- The 2,639tCO2e estimate is presented as a verified actual reduction
- The customer Scope 3 boundary and double-counting control have not been agreed
Documents, Data, and Sample to Check Today
- Document: Pages 14–15 of the primary sustainability report and the supplier’s product-level renewable-electricity calculation note
- Data: Monthly generation, self-consumption and export records, plus production orders and cumulative deliveries by customer SKU
- Sample: One SKU traced from plant, line, date, and lot through to its delivery record
- Hold rule: If either the plan/result boundary or the site/product boundary cannot be connected, hold the quantified product claim.
Solar equipment, a site conversion rate, and a product application quantity are related, but they are not the same indicator. The safe conclusions from this case are the reported 2025 generation indicators for Cheongwon and Sihwa, the two-site 23.2% figure, and an application plan of about 1.3 million boxes annually. Product-level actuals require a separate connection to production orders and delivery records.
About the Author
PackingMaster: Editor of Paper Pack Log. We collect and organize market trends, product information, and technical insights for the paper packaging industry.