Inzonex Carbon Hubpowered by inzonex.co.uk
European Union · CSRD

ESRS E1 — where an efficiency project lands in the CSRD report

CSRD reporting runs on the European Sustainability Reporting Standards; E1 (Climate change) is the one every industrial reporter must address. It doesn't just want your emissions — it wants your actions, the money behind them, and the targets they serve (Delegated Regulation (EU) 2023/2772).

Who reports — the 2026 Omnibus reset (now law)

The scope was cut hard, and it is now final. The Omnibus I Directive (EU) 2026/47 was published in the Official Journal on 26 Feb 2026 and entered into force on 18 Mar 2026. Mandatory CSRD now applies only to EU companies with more than 1,000 employees AND over €450M net turnover — up from the old 250-employee / €50M test. The Commission estimates this removes ~80% of previously-in-scope companies. Wave-1 companies (first reports published 2025 on FY2024) keep reporting for FY2025 and FY2026, but those now below the new thresholds may take an optional transitional exemption, subject to each Member State's transposition. Practical read: many mid-size industrials are no longer directly in scope — but if you supply a company that still is, their ESRS E1 data requests reach you regardless of your own size.

The E1 datapoints that need a real project

DatapointNameWhat it actually asks for
E1-1Transition plan for climate mitigationYour decarbonization levers, costed and dated
E1-3Actions and resourcesConcrete measures taken/planned + CapEx/OpEx behind them
E1-4TargetsGHG reduction targets — and the measures that make them credible
E1-5Energy consumption & mixTotal energy, intensity per net revenue
E1-6Gross Scope 1, 2, 3The inventory itself

Auditors (limited assurance now, reasonable assurance planned) test whether E1-3 actions are real, measurable and linked to E1-4 targets.

Inzonex removable modular insulation on industrial equipment
Cut the tonnes at the source

Hot industrial equipment? Cut the heat loss.

Boilers, kilns, heat exchangers, valves and steam lines lose energy continuously. Inzonex makes Inzonex Modular Insulation — snap-fastened modules engineered per temperature tier, not generic off-the-shelf jackets:

  • Up to 96% less heat loss from insulated surfaces
  • Surface temperature ≤45 °C — touch-safe for workers (EN ISO 13732-1)
  • 6× faster maintenance access vs standard insulation jackets and metal cladding/boxes — unclips and refits in minutes, no destruction
  • Inspectable — opens for corrosion-under-insulation checks, then refits like-new (generic jackets often don't survive removal)
  • Typical payback under 2 years — some sites 9–11 months

Every tonne you stop emitting is a tonne you don't have to report: cutting heat loss is a measurable, auditable Scope 1 reduction that flows straight into EU ETS, CBAM and your ESG / CSRD disclosures — not an offset, an actual emission cut.

Worked example — an insulation measure as an E1-3 entry

E1-3 disclosure line: "Heat-loss elimination programme: removable modular insulation installed on 120 bare components across the steam and condensate system (survey to ASTM C680). Annual effect: 1.4 GWh fuel reduction, 256 t CO2e Scope 1 (DESNZ factors), CapEx €68k, payback up to 2 years. Contributes to the 2030 Scope-1 intensity target (E1-4); saving verified against metered gas consumption."

The structure — measure, method, energy, tonnes, money, target link, verification — is exactly what assurance providers ask for. Generate the numbers for your own project with the certificate tool.

Why efficiency is the easiest E1 win

Most E1 transition-plan levers are capital programmes with 2030s horizons (fuel switching, electrification, CCS). Efficiency measures are the only entries that are simultaneously: implemented this year (E1-3), measurable against meters (assurance-proof), cash-positive (the CFO signs), and visible in the E1-5 intensity line the following year. At €80.01/t they also cut the ETS bill — the same tonne works three times.

FAQ

Questions on this topic

What is ESRS E1?
The climate-change standard within the European Sustainability Reporting Standards used for CSRD reports — covering transition plans, climate actions and resources, targets, energy consumption, and gross Scope 1/2/3 emissions.
Did the Omnibus change who must report under CSRD?
Yes — and it is now law, not a proposal. Directive (EU) 2026/47 (in force 18 Mar 2026) raised the threshold to more than 1,000 employees AND over €450M turnover, removing an estimated 80% of previously-in-scope companies. Wave-1 companies continue for FY2025–FY2026; those now under the threshold may use an optional transitional exemption depending on national transposition.
Do non-EU companies have to report under CSRD?
Eventually yes if they have large EU operations (the third-country regime, ~2028+ timing under Omnibus revision). Sooner in practice: EU customers in scope will pass E1 data requests down their supply chain.
What evidence do auditors want for E1-3 actions?
A defined measure, a recognised quantification method (e.g. ASTM C680 / ISO 12241 for heat loss), before/after figures or metered verification, the CapEx/OpEx involved, and a link to a disclosed target.
How this page is built: framework facts cite the legal text or official guidance named in each section (SECR: Companies (Directors' Report) Regulations 2018; ESOS: Energy Savings Opportunity Scheme Regulations; CBAM: Regulation (EU) 2023/956; CSRD/ESRS: Delegated Regulation (EU) 2023/2772). Savings figures follow ASTM C680 / ISO 12241 — the method behind our public calculators. Published by Inzonex Research. This is practical guidance, not legal advice. Framework facts last reviewed 19 June 2026, updated for the Omnibus I Directive (EU) 2026/47. Spotted an error? Tell us.
Source: Inzonex Carbon Hub — inzonex.co.uk/carbon · prices dated as shown on each figure · schedule per Regulation (EU) 2023/956 · indicative analytics, not compliance advice.