Statement of specific indicators

"KPI Statement"

Purpose of the document

In the current context, stakeholder attention to environmental and social sustainability is becoming increasingly crucial, and detailed reporting on key indicators aims to help stakeholders understand the methodologies used by Snam Group in reporting on certain performance indicators.

Snam S.p.A. (hereinafter also "Snam" or "the Company") operates within a constantly evolving market, in which the demands and expectations of investors, regulators, employees and civil society are rapidly changing in favor of the adoption of innovative strategies which recognize the increasingly central role of Sustainability. In this context, Snam has adopted its own Sustainability strategy, within which the fight against climate change and the topic related to human resources are two of the pillars.

Snam has therefore prepared this summary table of specific indicators (hereinafter also referred to as the "KPI Statement" or "Statement") within which the actual data as of December 31, 2023 and the respective calculating methodologies have been reported. The indicators have been identified on the basis of the topics identified as most significant from the materiality analysis, carried out for the purpose of reporting the Non-Financial Statement (hereinafter also referred to as the "NFS") 2023, also in response to requests from Group's main stakeholders. This Statement was subjected to a limited review (limited assurance engagement) by the auditing firm Deloitte & Touche S.p.A., which expressed its conclusions in the attached audit report.

The identified indicators were reported on the basis of what is defined by the reporting principles "GRI - Global Reporting Initiative (hereinafter also "GRI Standards" or "GRI"). Below is a list of the indicators:

  • GRI 305-3 Other indirect (Scope 3) GHG emissions;
  • GRI 305-4 GHG emissions intensity;
  • GRI 305-5 Reduction of GHG emissions;
  • GRI 305-7 Nitrogen oxides (NOx), sulphur oxides (SOx) and other significant air emissions;
  • GRI 306-3 Waste generated;

Internal

Piazza Santa Barbara, 7

Snam S.p.A.

20097 San Donato Milanese (MI) Italia

Sede legale: San Donato Milanese (MI), Piazza Santa Barbara, 7

Tel. centralino + 39 02.3703.1

Capitale sociale: Euro 2.735.670.475,56 i.v.

www.snam.it

Codice fiscale e iscrizione al Registro Imprese della CCIAA

di Milano, Monza Brianza, Lodi n. 13271390158

R.E.A. Milano n. 1633443

Partita IVA n. 13271390158

  • GRI 306-4 Waste diverted from disposal;
  • GRI 306-5 Waste directed to disposal;
  • GRI 403-9Work-related injuries;
  • GRI 403-10Work-related ill health;
  • GRI 405-1 Diversity of governance bodies and employees;
  • GRI 405-2 Ratio of basic salary and remuneration of women to men.

Among the indicators reported in this Statement, GRI 305-1 "Direct GHG emissions (Scope 1)" and GRI 305-2 "Indirect GHG emissions from energy consumption (Scope 2)" were not included; for the two indicators a full review (reasonable assurance) was conducted for the purpose of preparing the 2023 NFS.

With the aim of ensuring the reliability of reported information, the use of estimates has been limited as much as possible. Any estimates are based on the best available information or on sample surveys.

The figures shown refer to the scope of consolidation of the Consolidated financial statements of Snam's Group and include, in addition to the parent company Snam S.p.A.:

  • Natural gas transportation (Snam Rete Gas S.p.A., Infrastrutture Trasporto Gas S.p.A., Enura
    S.p.A., Asset Company 2 S.r.l.);
  • LNG regasification (GNL Italia S.p.A., Snam FSRU Italia S.r.l., FSRU I Limited and Ravenna LNG
    Terminal S.r.l.);
  • Natural gas storage (Stogit S.p.A.);
  • Mobility & Liquefaction (Greenture S.p.A., Cubogas S.r.l.);
  • Biogas / Biomethane (Bioenerys S.r.l., Bioenerys Agri S.r.l., Agriwatt Castel Goffredo Società
    Agricola a.r.l., Bietifin S.r.l., Biogas Bruso Società agricola a r.l., BYS Società Agricola Impianti S.r.l, Emiliana Agroenergia Società Agricola S.r.l., Maiero Energia Società agricola a r.l., Moglia Energia Società Agricola a r.l., MST S.r.l., MZ Biogas Società agricola a r.l, Società Agricola Agrimetano S.r.l., Società Agricola Agrimetano Pozzonovo S.r.l., Società Agricola Agrimetano Ro S.r.l., Società Agricola Agrimezzana Biogas S.r.l, Società Agricola Asola Energie Biogas S.r.l., Società Agricola Biostellato 1 S.r.l., Società Agricola Biostellato 2 S.r.l., Società Agricola Biostellato 3 S.r.l., Società Agricola Biostellato 4 S.r.l, Società Agricola Carignano Biogas S.r.l., Società Agricola La Valle Green Energy S.r.l., Società Agricola San Giuseppe Agroenergia S.r.l., Società Agricola Sangiovanni S.r.l., Società Agricola G.B.E. Gruppo Bio Energie S.r.l., Società Agricola Zoppola Biogas S.r.l., Società Agricola Santo Stefano Energia S.r.l., Società Agricola SQ Energy S.r.l, Società Agricola T4 Energy S.r.l., Società Agricola Tessagli Agroenergia S.r.l., Soragna Agroenergie Società Agricola S.r.l., Zibello Agroenergie Società Agricola S.r.l., Bioenerys Ambiente S.r.l, Biowaste CH4 Anzio S.r.l., Biowaste CH4 Group S.r.l., Biowaste CH4 Foligno S.r.l., Biowaste CH4 Genova S.r.l., Biowaste CH4 Legnano S.r.l, Biowaste CH4 Tuscania S.r.l., CH4

pag 2 / 7

Internal

Energy S.r.l; BYS Ambiente Impianti S.r.l., Renerwaste Lodi S.r.l., Ecoprogetto Tortona S.r.l., Enersi Sicilia S.r.l., Renerwaste Cupello S.r.l.;

  • Energy Efficiency (Renovit S.p.A., TEP Energy Solution S.r.l., Renovit Public Solutions S.p.A.
    (formerly Mieci S.p.A.), Tlux S.r.l., Evolve S.r.l.);
  • Hydrogen (Asset Company 10 S.r.l.)
  • Other activities (Snam International B.V., Gasrule Insurance D.A.C.).

With reference to the reported environmental aspects, the companies Snam International BV, Gasrule Insurance DAC and Enura S.p.A., as they do not have significant environmental impacts, are excluded from the consolidation.

The actual values as of December 31, 2023, of the indicators shown in the table in the next paragraph correspond to those reported in the 2023 NFS. With respect to the NFS, the relevant calculation methodology has been indicated for each KPI.

Indicators' calculation methodology and accounting

GRI Indicator

Calculation methodology

Performance 2023

305-3 Other indirect (Scope 3) GHG emissions

Snam reports all applicable GHG Protocol categories that relate to the regulated business.

The emission factors used to calculate GHG Scope 3 emissions, for the individual applicable Scope 3 categories, are:

Scope 3

Emission factor

Calculation methodology

category

01. Purchased

Calculation made by Supply

Trucost dataset

Chain Unit based on the

goods and

(S&P)

ordered goods from

services

suppliers

Calculation made by Supply

02. Capital

Trucost dataset

Chain Unit based on the

goods

(S&P)

ordered goods from

suppliers

Calculated by multiplying

the energy consumption

reported by the companies

included in the reporting

DEFRA 2021

perimeter by the emission

(WTT- overseas

factors related to upstream

03. Fuel- and

electricity

activities for Italian power

energy-related

(generation))

generation (i.e., fuel

activities (not

DEFRA 2022 (T&D-

extraction and

included in

overseas

transportation), upstream

Scope 1 e 2)

electricity

activities for all fuels

(generation) and

consumed by the

WTT- fuels)

Company, including those

related to gas extraction

and transportation, and

power losses along the

Italian grid.

CO2eq emissions - Scope 3: 1,589,833 tCO2eq

  • of which purchased goods and services (cat. 01): 124,311 tCO2eq
  • of which capital goods (cat. 02): 644,761 tCO2eq
  • of which fuel- and energy-related activities (not included in Scope 1 and 2) (cat. 03): 167,525 tCO2eq
  • of which upstream transportation and distribution (cat. 04): 4,845 tCO2eq
  • of which waste generated in operations (cat. 05): 2,687 tCO2eq
  • of which business travel (cat. 06): 1,538 tCO2eq
  • of which employee commuting (cat. 07): 3,931 tCO2eq
  • of which upstream leased assets (cat. 08): 909 tCO2eq
  • of which Investments (cat. 15): 639,326 tCO2eq

pag 3 / 7

Internal

GRI Indicator

Calculation methodology

Performance 2023

04. Upstream

Calculation made by Supply

Trucost dataset

Chain Unit based on the

transportation

(S&P)

ordered goods from

and distribution

suppliers

05. Waste

Calculation made by Supply

Trucost dataset

Chain Unit based on the

generated in

(S&P)

ordered goods from

operations

suppliers

06. Business

Data provided by travel

agency based on km

travel

traveled by train and by air

EEA Air pollutant

Estimated evaluation

based on the last survey on

07. Employee

emission

distances traveled and

commuting

inventory

means of transportation

guidebook 2016

used carried out (2023)

Calculation made by Supply

08. Upstream

Trucost dataset

Chain Unit based on the

leasing activities

(S&P)

ordered goods from

suppliers

Calculated from data on

Scope 1 and Scope 2 GHG

emissions of Associates,

normalized to the GWP of

15. Investments

the latest IPCC report used

by Snam (29.8) and

parameterized to the

percentage of equity

owned by Snam.

The remaining categories are not applicable to Snam.

305-4 GHG emissions intensity

For the calculation of GHG emission intensities, the Scope 1 and Scope 2 or

Scope 1 and 2 market based GHG emissions vs.

CH4 emission values used for GRI 305-1 and 305-2 reporting in 2023 NFS were

network length: 43 tCO2eq / km

considered in the numerator.

Scope 1 and 2 market based GHG emissions vs.

transported gas: 22 tCO2eq / mld m3

Total methane emissions vs. network length: 0.41

tCH4 / km

Total GHG emissions (Scope 1 + Scope 2 location

based + Scope 3) vs. net revenue: 704 tCO2 / mln

€

Total GHG emissions (Scope 1 + Scope 2 market

based + Scope 3) vs. net revenue: 700 tCO2 / mln

€

Transported natural gas emissions/gas injected

into the network9: 0.022%

Stored natural gas emissions/stored gas:

0.048 %

305-5 Reduction of GHG

The figure refers to the entire Group perimeter.

Percentage of Scope 1 and Scope 2 market based

The greenhouse gases considered for reporting are: Methane, Carbon

greenhouse gas emission reduction vs. 2022: -7%

emissions

Dioxide and HFC (hydrofluorocarbons).

The reduction is calculated with respect to 2022.

Percentage of Scope 3 greenhouse gas emission

reduction vs. 2022: +18%

(The percentage reduction in Scope 3 greenhouse gas emissions compared to

2022 is increasing because it also includes SeaCorridor, company acquired in 2023).

305-7 Nitrogen oxides (NOx), sulphur oxides (SOx) and other significant air emissions

GRI calls for reporting significant emissions of Nitrogen Oxides (NOX), Sulfur

NOx emissions: 617 t

Oxides (SOX), Persistent Organic Pollutants (POP), Volatile Organic

CO emissions: 398 t

Compounds (VOC), Hazardous Air Pollutants (HAP), Particulate Matter (PM)

and any other emissions.

pag 4 / 7

Internal

GRI Indicator

Calculation methodology

Performance 2023

Atmospheric emissions of NOx were calculated from direct measurements or, if not available, from emission factors found in the literature (EMEP/EEA "Air pollutant emission inventory guidebook" European Environmental Agency). The only relevant pollutant emissions for the Group are nitrogen oxides (NOx), which mainly result from the combustion of natural gas in the turbines of the compressor and storage plants.

306-4 Waste diverted from disposal

Waste generated, broken down by type of waste (hazardous and non-

Waste diverted from disposal: 167,207t

hazardous) and type of recovery, according to the categories in the reference

Hazardous:

standard.

Preparation for reuse: 0t

Recycling: 0t

Other recovery operations: 5,136t

Temporary storage at year end: 18t

Non-hazardous:

Preparation for reuse: 0t

Recycling: 4,496t

Other recovery operations: 149,811t

Temporary storage at year end: 7,746t

306-5 Waste directed to disposal

The data are derived from the loading and unloading registers, from forms in

Waste directed to disposal: 60,317t

the case of waste sent for disposal without an entry in the register, and data

Hazardous:

on waste from production activities loaded onto the register in the previous

Incineration (with energy recovery): 0t

year which will be disposed of in the reporting year.

Incineration (without energy recovery): 0t

Landfilling: 0t

Other disposal operations: 4,631t

Non-hazardous:

Incineration (with energy recovery): 3,917t

Incineration (without energy recovery): 2t

Landfilling: 4,143t

Other disposal operations: 47,624t

403-9Work-related injuries

Recordable work injury: an injury that resulted in an absence from the workplace of more than three days, excluding the day the injury occurred and for which a report was made to INAIL as defined by the UNI7249:2007 standard.

In case a death occurs due to occupational injury, 7,500 days of absence is considered as the number of days lost, as defined by the UNI7249:2007 standard.

The accident frequency index is calculated by considering the number of accidents (excluding commuting accidents), with inability of at least one day, per one million hours worked.

The hours worked for employees, if not available, are based on the number of employees multiplied by an estimated 140 hours per month.

The hours worked for workers who are not employees, if not available, are based on the number of workers who are not employees multiplied by an estimated monthly total hours of 140.

Employees

  • Accidents: 12
  • Fatal accidents: 0
  • Accidents with serious consequences: 0
  • Accidents related to road accidents: 3
  • Accidents due to professional circumstances (maintenance, inspection, checks): 5
  • Accidents due to general circumstances (slipping, collision, tripping): 4
  • Accident frequency index: 2.06
  • Frequency index for serious accidents at work (excluding fatalities): 0
  • Frequency index for deaths due to accidents at work: 0
  • Severity index: 0.09
  • Hours worked: 5,821,852

Contractors

  • Accidents: 9
  • Fatal accidents: 0
  • Accidents with serious consequences: 0
  • Accident frequency index: 0.64
  • Frequency index of accidents with serious consequences (excluding deaths): 0
  • Frequency index of work-related fatalities: 0
  • Severity index: 0.03
  • Hours worked: 14,002,367

pag 5 / 7

Internal

GRI Indicator

Calculation methodology

Performance 2023

Employees and Contractors

• Accidents: 21

• Fatal accidents: 0

• Accidents with serious consequences: 0

• Employees and contractors accident frequency index: 1.06

• Employees and Contractors Accident Severity Index. 0.05

403-10 Work-relatedill health Contractors, like employees, are not exposed to risks that will generate Employees: 0 occupational diseases over time.

405-1 Diversity of governance bodies and employees

The consolidated data for KPI calculation is the number of employees as of 31/12/2023.

In providing the information regarding employees with disabilities, the following categories are classified: people with disabilities, ex art. 1 Law 68/99; people belonging to protected categories (ex art. 18 Law 68/99).

BoD members: 9

  • of which women: 4 (44%)
  • of which between 30 and 50 years old: 2 (22%)
  • of which >50 years old: 7 (78%)

Employees: 3,798

  • of which women 670 (18%)
  • of which men 3,128 (82%)

Executives: 130 (4%)

  • of which women: 25 (19%)
  • of which men: 105 (81%)
  • of which <30 years old: 0 (0%)
  • of which between 30 and 50 years old: 70 (54%)
  • of which >50 years old: 60 (46%)

Middle Managers: 682 (18%)

  • of which women: 179 (26%)
  • of which men: 503 (74%)
  • di cui <30 anni: 5 (1%)
  • of which between 30 and 50 years old: 421 (62%)
  • of which >50 years old: 256 (37%)

White-collar workers: 2,104 (55%)

  • of which women: 464 (22%)
  • of which men: 1,640 (78%)
  • di cui <30 anni: 399 (19%)
  • of which between 30 and 50 years old: 999 (47%)
  • of which >50 years old: 706 (34%)

Blue-collar workers: 882 (23%)

  • of which women: 2 (0.2%)
  • of which men: 880 (99.8%)
  • di cui <30 anni: 290 (33%)
  • of which between 30 and 50 years old: 261 (29%)

pag 6 / 7

Internal

GRI Indicator

Calculation methodology

Performance 2023

• of which >50 years old: 331 (38%)

Other categories

• Employees with disabilities: 121 (3%)

of which women: 25 (1%)

• Employees belonging to protected categories:

78 (2%)

405-2 Ratio of basic salary and

The gender pay gap was calculated using both cash and accrual data, a

Gender pay gap on a cash basis

principle used in Section II of the Remuneration Report under current

remuneration of women to men.

•

Executives: 86%

regulations.

The representation of the gender pay gap on a cash basis is calculated on the

•

Middle Managers: 95%

amount of compensation paid during the year.

The representation of the gender pay gap on an accrual basis is calculated by

•

White-collar workers: 93%

considering - with regard to the variable components - the amounts accrued

Gender pay gap on an accrual basis

in the year, even if paid in different years (the data refer to 2022, the data for

2023 will be available after the publication of the Non-Financial Statement

•

Executives: 88%

2023 and will therefore be published in the next edition of the document).

•

Middle Managers: 96%

For the "Blue-collar workers" category, data have not been reported for

privacy reasons given the low numerical representation of the female gender

• White-collar workers: 94%

in this category.

Gender pay gap on basic salary

•

Executives: 88%

•

Middle Managers: 96%

• White-collar workers: 94%

pag 7 / 7

Internal

Deloitte & Touche S.p.A.

Via Tortona, 25

20144 Milano

Italia

Tel: +39 02 83322111

Fax: +39 02 83322112

www.deloitte.it

INDEPENDENT AUDITOR'S REPORT

ON THE STATEMENT OF SPECIFIC INDICATORS

To the Board of Directors of

Snam S.p.A.

We have carried out a limited assurance engagement of some indicators (hereinafter also "KPI") included in the attached statement of specific indicators (hereinafter also "KPI Statement" or "Statement") of Snam S.p.A. (hereinafter the "Company") as of December 31, 2023, prepared on a voluntary basis.

Responsibility of the Directors for the Sustainability Report

The Directors of Snam S.p.A. are responsible for the reporting of the indicators in accordance with the criteria described in the paragraph "Indicators' calculation methodology and accounting" of the Statement, based on the reporting principles "GRI - Global Reporting Initiative" (hereinafter "GRI Standards" or "GRI) and for the preparation of the KPI Statement. The Directors are also responsible for such internal control as they determine is necessary to enable the preparation of the Statement that is free from material misstatement, whether due to fraud or error.

Auditor's Independence and quality management

We have complied with the independence and other ethical requirements of the International Code of Ethics for Professional Accountants (including International Independence Standards) (IESBA Code) issued by the International Ethics Standards Board for Accountants, which is founded on fundamental principles of integrity, objectivity, professional competence and due care, confidentiality and professional behaviour.

Our firm applies International Standard on Quality Management 1, which requires the firm to design, implement and operate a system of quality management including policies or procedures regarding compliance with ethical requirements, professional standards and applicable legal and regulatory requirements.

Auditor's responsibility

Our responsibility is to express our conclusion based on the procedures performed about the compliance of the indicators reported in the Statement with the criteria described in the paragraph "Indicators' calculation methodology and accounting" of the Statement, based on the GRI Standards. We conducted our work in accordance with the criteria established in the "International Standard on Assurance Engagements ISAE 3000 (Revised) - Assurance Engagements Other than Audits or Reviews of Historical Financial Information" (hereinafter "ISAE 3000 Revised"), issued by the International Auditing and Assurance Standards Board for limited assurance engagements. The standard requires that we plan and perform the engagement to obtain limited assurance whether the indicators reported in the Statement are free from material misstatement.

Ancona Bari Bergamo Bologna Brescia Cagliari Firenze Genova Milano Napoli Padova Parma Roma Torino Treviso Udine Verona

Sede Legale: Via Tortona, 25 - 20144 Milano | Capitale Sociale: Euro 10.328.220,00 i.v.

Codice Fiscale/Registro delle Imprese di Milano Monza Brianza Lodi n. 03049560166 - R.E.A. n. MI-1720239 | Partita IVA: IT 03049560166

Il nome Deloitte si riferisce a una o più delle seguenti entità: Deloitte Touche Tohmatsu Limited, una società inglese a responsabilità limitata ("DTTL"), le member firm aderenti al suo network e le entità a esse correlate. DTTL e ciascuna delle sue member firm sono entità giuridicamente separate e indipendenti tra loro. DTTL (denominata anche "Deloitte Global") non fornisce servizi ai clienti. Si invita a leggere l'informativa completa relativa alla descrizione della struttura legale di Deloitte Touche Tohmatsu Limited e delle sue member firm all'indirizzo www.deloitte.com/about.

© Deloitte & Touche S.p.A.

2

The procedures performed are based on our professional judgement and included inquiries, primarily with Company personnel responsible for the reporting of the indicators and the preparation of the KPI Statement, analysis of documents, recalculations and other procedures aimed to obtain evidence as appropriate.

Specifically we carried out the following procedures:

  • obtaining the KPI Statement, provided by the Company, which includes the reporting values of the KPIs subject to assurance as at December 31, 2023 and the description of the criteria used for reporting;
  • understanding and analysis of the criteria used for KPI reporting, included in the paragraph
    "Indicators' calculation methodology and accounting" of the KPI Statement;
  • comparison between the data and information related to KPIs included in the Statement and the respective data and information included in the Non-Financial Statements as at December 31, 2023;
  • analysis and understanding, through interviews, of the processes and procedures that support the collection, aggregation, elaboration and transmission of KPI data reported in the Statement;
  • carrying out meetings with the Company in order to obtain information and documentary evidence, on a sample basis, about the correct application of the procedures and calculation methods adopted for each of the KPIs reported in the Statement, with respect to the criteria defined by the Company based on GRI Standards.

The procedures performed in a limited assurance engagement are less in scope than those performed in a reasonable assurance engagement in accordance with ISAE 3000 Revised ("reasonable assurance engagement"), and, therefore, do not enable us to obtain assurance that we would become aware of all significant matters and events that might be identified in a reasonable assurance engagement.

Conclusions

Based on the work performed, nothing has come to our attention that causes us to believe that the indicators reported in the Statement, prepared by Snam S.p.A. as of December 31, 2023 are not reported, in all material aspects, in accordance with the criteria described in the paragraph "Indicators' calculation methodology and accounting" of the KPI Statement, based on the GRI Standards.

DELOITTE & TOUCHE S.p.A.

Signed by

Paola Mariateresa Rolli

Partner

Milan, Italy

April 19, 2024

This report has been translated into the English language solely for the convenience of international readers.

Attachments

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SNAM S.p.A. published this content on 22 April 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 22 April 2024 08:01:04 UTC.