Jilayaasha WIA SOOM

Warbixinta kaarboonka — tirakoobka GHG iyo qorshaha dhimista Qaabka tooska ah

Waxaad maamushaa xisaabaadka kaarboonka ee warshad guud. Bil kasta moodelku wuxuu shidaalka, korontada iyo iibsiga u rogaa tonnooyin u dhigma CO₂ isagoo adeegsanaya qodobbo qiiq oo la daabacay, wuxuu u kala saaraa Baaxadaha 1, 2 iyo 3 sida GHG Protocol, wuxuuna la socdaa sida ay xogtu u dhammaystiran tahay iyo sida ay u hubanti-xun tahay, wuxuuna barbardhigaa 12-kii bilood ee dhaqaaqa iyo waddo dhimis ah oo 4.2 % sannadkii laga bilaabo sannadka salka. Waxaad go'aamisaa cabbirka, ka-qaybgalinta alaab-qeybiyayaasha, shahaadooyinka korontada la cusboonaysiin karo, dhibcaha kaarboonka iyo afar mashruuc oo dhimis ah oo leh waqtiyo dhab ah iyo miisaaniyad. Ciyaar waxbarasho oo kaliya — ma aha talo xisaabeed, xaqiijin, sharci ama maalgelin.

Waxa aad baran doonto

Jile

Waqti 0 bil
Qiiqa guud ee bishan 0 t CO₂e · Baaxadda 1 (shidaal) 0 · Baaxadda 2, ku saleysan suuqa 0 · Baaxadda 3, alaabta la iibsaday 0 · Farqiga u dhexeeya waddada dhimista (12-ka bilood ee dhaqaaqa) 0.0% · Hubanti-xumada tirakoobka (95 %) ±0.0% · Miisaaniyadda la isticmaalay 0% · Dib-u-xisaabinta sannadka salka 0Bishan · 0 t CO₂e · Qaybta Baaxadda 3 0%┆ Baaxadda 2 ee ku saleysan goobta 0 tSaafi dhibcaha ka dib (looma isticmaaloyoolalka) 0 tWax-soo-saarka iyo sannadka salka 100%Qiiqa bishii ee wax-soo-saarka sannadka salka 0 t± 0.0% · ✓ Dib-u-xisaabinta sannadka salka 0Qiiqa isugeynta ah iyo waddada (miisaaniyaddakaarboonka) 0%Mashaariicda dhimista12-kii bilood ee ugu dambeeyay, kt CO₂e0.0 dhab ah ✓ 0.0%0.0 la oggol yahayXogta hawlgalka ee la cabbiray 90%Kharashka leh xogta gaarka u ahalaab-qeybiyaha 0%Miisaaniyadda la isticmaalay 0%○ Waxtar250 k€○ Bamba kuleyl2000 k€○ Qorrax1000 k€○ Gawaarida800 k€
  • Baaxadda 1 — shidaalka goobta lagu gubo
  • Baaxadda 2 — korontada la iibsaday (ku saleysan suuqa)
  • Baaxadda 3 — alaabta la iibsaday
  • Mashruuca lama maalgelin
  • Mashruuca waa la dhisayaa
  • Wuu shaqeynayaa

Xakamayaal

Mitirrada hoose, diiwaannada shidaalka iyo qabsashada qaansheegyada goob kasta: qaybta la cabbiray ee xogta hawlgalku waxay kor u kacdaa 95 % dhawr bilood gudahood. 10 k€ bishii.

Alaab-qeybiyayaasha ka qaybqaatay waxay wadaagaan xogta qiiqa heerka badeecadda (taas oo beddesha celceliska ku saleysan kharashka) markay yoolal dejiyaanna way dhimaan xooggooda gaarka ah. Waxay ku kacdaa 4 k€ + 50 k€ × qayb bishii.

Shahaadooyinka sifooyinka tamarta waxay qaybta daboolan ka dhigaan eber Baaxadda 2 ee ku saleysan suuqa. Baaxadda 2 ee ku saleysan goobta ma beddelmo. Qiyaastii 4 € MWh kasta.

Dhibcuhu waxay dhimaan kaliya tirada "saafiga" ah. Qiiqa guud iyo horumarka yoolka isma beddelaan. Qiyaastii 15 € tan kasta.

Nalalka, dillaacyada hawada la cadaadiyay, wadayaasha xawaaraha kala duwan: −10 % korontada. 250 k€, diyaar 2 bilood gudahood.

Qiyaastii 100 MWh bishii celcelis ahaan, xagaaga ka badan. Wuxuu dhimaa labada habka ee Baaxadda 2. 1000 k€, diyaar 6 bilood gudahood.

Wuxuu qaataa badhka kuleylka habka ee gaaska laga dhaliyo (waxtarka boyleerka 0.9 → COP-ga bamba kuleylka 3): Baaxadda 1 oo yar, korontada oo badan. 2000 k€, diyaar 9 bilood gudahood.

Wuxuu beddelaa 80 % ka mid ah faanaska diisalka ah; faanaska korontadu waxay u baahan yihiin qiyaastii saddex meelood meel tamarta. 800 k€, diyaar 8 bilood gudahood.

Tilmaamayaal

Farqiga u dhexeeya waddada dhimista (12-ka bilood ee dhaqaaqa)
0.0%
digniin
Hubanti-xumada tirakoobka (95 %)
0.0%
caadi
Miisaaniyadda la isticmaalay
0%
caadi
Dib-u-xisaabinta sannadka salka
0
caadi
Qiiqa guud ee bishan0 t CO₂e
Baaxadda 1 (shidaal)0 t CO₂e
Baaxadda 2, ku saleysan suuqa0 t CO₂e
Baaxadda 2, ku saleysan goobta0 t CO₂e
Baaxadda 3, alaabta la iibsaday0 t CO₂e
Qaybta Baaxadda 30 %
Saafi dhibcaha ka dib (looma isticmaalo yoolalka)0 t CO₂e
Qiiqa guud ee 12-ka bilood ee dhaqaaqa0.0 kt CO₂e
Qaybta waddada oggolaatay ee isla 12-kaas bilood0.0 kt CO₂e
Qiiqa isugeynta ah iyo waddada (miisaaniyadda kaarboonka)0 %
Qiiqa bishii ee wax-soo-saarka sannadka salka0 t CO₂e
Qiiqa la soo sheegay iyo kan runta ah ee bishan0.0 %
Xogta hawlgalka ee la cabbiray90 %
Kharashka leh xogta gaarka u ah alaab-qeybiyaha0 %
Lacagta la bixiyay0 k€
Wax-soo-saarka iyo sannadka salka100 %

Isbeddel

Farqiga u dhexeeya waddada dhimista (12-ka bilood ee dhaqaaqa): — %40.0-40.0

Xaaladaha dhibaatada

Heerka 1 · Tirakoobka koowaad, xog aan buuxin

Shirkaddu waxay diyaarineysaa tirakoobkeedii ugu horreeyay ee gaaska aqalka dhirta; sannadkan wuxuu noqonayaa sannadka salka. Kaliya qiyaastii 30 % isticmaalka shidaalka iyo korontada ayaa la cabbiraa — inta kale waxaa laga qiyaasaa diiwaanno aan dhammaystirnayn, goobo iyo qaansheegyo qaarna hubaal way maqan yihiin. Alaabta la iibsaday waxaa lagu tiriyaa celcelisyo ku saleysan kharashka. Sannadka salka waxaa la daabacaa 12-ka bilood ka dib, xaqiijinta hubanti-xumada xaddidan ee ugu horreysa waxay eegtaa bisha 15. Ka fogow dib-u-xisaabin oo hubanti-xumada yaree, miisaaniyadda 1.2 M€ gudaheeda.

  • Dib-u-xisaabin sannadka salka ma jirto
  • Hubanti-xumada tirakoobka ≤ ±15 % bisha 24
  • Kharashka miisaaniyadda gudaheeda

Heerka 2 · Sannado koboc ah oo waddo 1.5 °C ah ku jira

Sannadka salka hadda ayaa la daabacay: qiyaastii 22 kt CO₂e, badhkood waa kuleylka habka ee gaaska laga dhaliyo. Korontada oo dhan hore ayay shahaadooyin la cusboonaysiin karo u dabooleen. Buug dalab cusub ayaa kor u qaadi doona wax-soo-saarka 12 % sannadkii labada sannadood ee soo socda, yoolkuna waa mid buuxa: laba sannadood ka dib 12-ka bilood ee dhaqaaqa waa inay ka hooseeyaan sannadka salka 8.4 %, qiiqa isugeynta ahna waa inuu ku jiraa miisaaniyadda kaarboonka ee waddada. Waxaad haysataa 3 M€. Xubin guddi ayaa soo jeediyey inaad dhibco iibsato halkaa.

  • 12-ka bilood ee dhaqaaqa waddada ama ka hooseeya bisha 24
  • Qiiqa isugeynta ah miisaaniyadda kaarboonka ee waddada gudaheeda
  • Kharashka miisaaniyadda gudaheeda

Heerka 3 · Raad ay alaab-qeybiyayaashu sameeyeen

Shirkad isku-dhejin ah oo iibsata inta badan waxa ay iibiso: qiyaastii 79 % sannadkeeda salka ee la daabacay (≈ 37 kt CO₂e) waa alaab la iibsaday, oo lagu tiriyay isu-dheelitir celcelis ah oo ku salaysan kharashka; inta kale waa inta badan gaaska habsocodka, gaadiid furgooneed oo diisal ah iyo koronto. Iibsigu wuxuu kordhaa 6 % sannadkii iibka la socda. Bartilmaameedku wuxuu daboolaa dhammaan baaxadaha: laba sano gudahood laba iyo tobanka bilood ee dhaqaaqa waa inay ku jiraan waddada 4.2 % sannadkii, qiiqa la isku daray waa inuu ku jiraa miisaaniyaddeeda, iyadoo hubanti-xumadu ka hooseyso ±20 %. Miisaaniyad 4 M€.

  • 12-ka bilood ee dhaqaaqa waddada ama ka hooseeya bisha 24
  • Qiiqa isugeynta ah miisaaniyadda kaarboonka ee waddada gudaheeda
  • Hubanti-xumada tirakoobka ka hooseysa ±20 %
  • Kharashka miisaaniyadda gudaheeda

Aasaas — moodelka ka dambeeya tirooyinka

Xiriir kasta oo jilaha isticmaalo, iyo ilaha uu ka yimid. Mudnaanta lagu calaamadiyay malo-awaal waa hagaajin muunad ah.

Baaxadda 1 — qiiqa tooska ah ee shidaalka shirkaddu gubto: hawlgal × qodobbada qiiqa (qiyamka caadiga ah ee IPCC ee gaaska dabiiciga ah iyo diisalka).
S1 = gas [TJ] × 56.1 t/TJ + diesel [TJ] × 74.1 t/TJ[5][1]
Baaxadda 2 waxaa laba jeer la soo sheegaa: ku saleysan goobta iyadoo la adeegsanayo qodobbada celceliska shabakadda, ku saleysan suuqa iyadoo la adeegsanayo qodobbada korontada dhab ahaan la qandaraasay — eber korontada ay shahaadooyin daboolaan, isku-dhafka haraaga inta kale.
S2_location = MWh × EF_grid; S2_market = MWh × (1 − certificate share) × EF_residual[2][9]Malo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.
Baaxadda 3, alaabta la iibsaday — habka isku-dhafan: xogta gaarka u ah alaab-qeybiyaha halka ay bixiyaan, kharashka × qodob celcelis ah oo gelinta–bixinta meel kale.
S3 = Σ engaged spend × supplier intensity + Σ other spend × EEIO factor (0.40 kg/€)[3][4]Malo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.
Xogta hawlgalka ee la qiyaasay tirakoobka koowaad waxay ka gudubtaa goobo iyo qaansheegyo; kaliya qaybta la cabbiray ayaa dhammaystiran.
reported activity = true × (1 − (1 − q_metered) × gap), gap ~ N(μ, 0.04) per source[1]Malo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.
Hubanti-xumooyinku way isku daraan sida tilmaamaha IPCC: si laba-jibaaran ah loogu daro isku-dhufasho (hawlgal × qodob), iyadoo cabbirka lagu miisaamayo wadarta ilaha.
U_source = √(U_AD² + U_EF²) (Eq. 3.1); U_total = √Σ(Uᵢ·Eᵢ)² / ΣEᵢ (Eq. 3.2)[6]
Sannadka salka waa la dib u xisaabiyaa marka hab ka fiican ama khalad ay xaqiijintu heshay uu 5 % ama ka badan u rogo, si sannad kasta loogu barbardhigo si isku mid ah.
recalculate base year if |B_today’s method / B_published − 1| ≥ 5 % (annual close, assurance finding)[1][7]
Waddo hoos-u-dhac buuxa ah: qaybta la oggol yahay waxay sannad kasta hoos u dhacdaa 4.2 % sannadka salka. Farqigu wuxuu barbar dhigaa laba iyo tobanka bilood ee ugu dambeeyay qaybtaas, iyadoo sannadka salka iyo daaqadduba labaduba lagu akhrinayo habka maanta (wax la mid ah iyo wax la mid ah).
allowed(t) = B × (1 − 0.042 · years since base); gap = rolling 12-month gross / allowed − 1 (B and the window both read with today’s method)[8][7]
Yoolalka waxaa lagu cabbiraa qiiqa guud. Dhibcaha kaarboonka si gooni ah ayaa loo shaaciyaa weligoodna lama tiriyo dhimis.
gross = S1 + S2_market + S3 (targets); net = gross − credits retired (shown apart, never counted)[7][9]
Kharashka dhimista ee gaarka ah ee mashruuc: kharashka raasumaalka sannadlaha ah oo laga jaray tamarta sannadlaha ah ee la badbaadiyay, tan kasta oo laga hortagay. Qiime taban macneheedu waa in mashruucu lacag badbaadiyo — warqad ahaan.
MAC = (capex × CRF(8 %, 15 y) − annual energy savings) / annual t abated; CRF = r(1+r)ⁿ/((1+r)ⁿ − 1)[10][11]Malo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.
Waxa mashruuc kasta ee dhimista ku beddelo xogta hawlgalka.
efficiency −10 % electricity · heat pump −50 % gas → + gas × 0.9 × 277.8 / COP 3 MWh · rooftop PV −100 MWh/mo (±40 % seasonal) · fleet −80 % diesel → + diesel × 277.8 / 3 MWh[1]Malo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.
Joogteyaal kale oo hawlgal oo moodelku isticmaalo.
grid 0.35 t/MWh, residual mix 0.42 t/MWh · EEIO 0.40 kg/€ · U: metered 2 %, estimated 20 %, grid 10 %, spend-based 50 %, supplier data 15 % · metering → 95 % metered, τ = 3 mo, 10 k€/mo · supplier programme 4 + 50 × share k€/mo, data τ = 6 mo, targets in place after a further τ = 6 mo, then engaged suppliers cut ≈ N(10 %, 1 %)/yr · certificates 4 €/MWh · credits 15 €/t · capex: efficiency 250 k€ (2 mo), PV 1 000 k€ (6 mo), heat pump 2 000 k€ (9 mo), fleet 800 k€ (8 mo) · prices: electricity 150 €/MWh, gas 40 €/MWh, diesel 1.5 €/L · first-inventory gap of estimated data N(μ, 4 %) per source · assurance re-performs the base year with complete activity data · ±3 % monthly activity noise · gas ±20 % seasonalMalo-awaal: qodobboka shabakadda iyo isku-dhafka haraaga, qodobbada gelinta–bixinta, kala duwanaanshaha hubanti-xumada, daldalooyinka tirakoobka koowaad, jawaabta alaab-qeybiyayaasha, kharashyada, qiimaha iyo cabbirka mashaariicda waa qiyam muunad ah oo loogu talagalay shirkad guud; xeerarka xisaabaadka, qodobboka shidaalka IPCC, faafinta hubanti-xumada iyo heerka waddada 4.2 % waa kuwa la daabacay.

Aan-kala-sooc: abuurahaha mulberry32 oo abuur leh; qaybinta la isticmaalay — isku-mid, tibaax (CDF rogan), caadi (Box–Muller), Poisson (Knuth). Abuurka waa la muujiyaa waana la wadaagi karaa.

Ilaha

  1. The Greenhouse Gas Protocol — A Corporate Accounting and Reporting Standard, Revised Edition (scopes; ch. 5 base-year recalculation for methodology changes and significant errors; ch. 7 inventory quality) — WRI / WBCSD, 2004
  2. GHG Protocol Scope 2 Guidance — location-based and market-based methods, dual reporting, Scope 2 Quality Criteria, residual mix — WRI / WBCSD, 2015
  3. Corporate Value Chain (Scope 3) Accounting and Reporting Standard — WRI / WBCSD, 2011
  4. Technical Guidance for Calculating Scope 3 Emissions, ch. 1 Purchased goods and services (supplier-specific, hybrid, average-data and spend-based methods) — WRI / WBCSD, 2013
  5. 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Vol. 2 Energy, ch. 2 Stationary Combustion (Table 2.2: natural gas 56 100 kg CO₂/TJ, gas/diesel oil 74 100 kg CO₂/TJ) — IPCC / IGES, 2006
  6. 2006 IPCC Guidelines, Vol. 1 General Guidance, ch. 3 Uncertainties (Approach 1: Eq. 3.1 products, Eq. 3.2 sums) — IPCC / IGES, 2006
  7. SBTi Corporate Near-Term Criteria V5.3.1 (C8 one consistent scope 2 approach; C11 carbon credits not counted as reductions; 5 % significance threshold for recalculation) — Science Based Targets initiative, 2026
  8. SBTi Corporate Net-Zero Standard V1.3.1 Method Appendix — linear annual reduction rates, minimum 4.2 % per year (absolute contraction, 1.5 °C) — Science Based Targets initiative, 2026
  9. Commission Delegated Regulation (EU) 2023/2772 — ESRS E1 Climate change (E1-6 gross scopes 1, 2, 3 with scope 2 location- and market-based; E1-7 removals and carbon credits reported separately) — European Union, Official Journal, 2023
  10. F. Kesicki, P. Ekins — Marginal abatement cost curves: a call for caution — Climate Policy 12(2), 219–236, 2012
  11. Capital recovery factor A/P = r(1+r)ⁿ/((1+r)ⁿ − 1) — standard engineering-economics annuity factor (e.g. W. G. Sullivan et al., Engineering Economy) — Pearson, 2019

Yaa shaqadan ka shaqeeya

Moodel waxbarasho — looma isticmaalo go’aamo hawlgal. Goobaha dhabta ahi waxay joogto kasta u hagaajiyaan qalabkooda iyo xogtooda.