Methodology & transparency

Methodology & sources

Evidence, statutory references and editable assumptions are listed separately below. The current screening reports the published record for Rudolf-Wissell-Haus; calculated results are indicative and depend on the stated inputs and assumptions.

Version 1.0.0 · References last checked 2026-09-26

What this is

A transparent screening of German building energy records, with documented units, sources, gaps and editable assumptions for future analysis. The district record identifies natural gas; its calorific basis is not published and is assumed to be Hs.

What this is not

Not an Energieausweis and not an assessment under DIN EN 16247 or EDL-G. A consumption-based class is only an indicative estimate when the required residential area basis is available; only authorised issuers can issue an Energieausweis. No reported finding establishes future outcomes, statutory compliance, funding eligibility or professional advice.

Emission factors

Direct CO₂ from combustion and electricity generation only; upstream emissions, CH₄ and N₂O are outside this screening. Supplier-specific carriers remain data gaps until documented.

Natural gas emission factors

Direct combustion CO₂ only. German gas invoices usually state kWh on an Hs basis; default input is Hs (invoice). Confirm the invoice basis.

Parameter	Value / status
Hi	0.2016
Hs	0.182
Default Input Basis	Hs (invoice)

Unit / basis: kg CO₂/kWh (Hi or Hs)
Effective / applicable period: 2023–2030
Source: EBeV 2030, Anlage 2 ↗https://www.gesetze-im-internet.de/ebev_2030/anlage_2.html
Last checked: 2026-09-26

Gas Hs-to-Hi conversion

kWh Hi = kWh Hs / 1.108; verify carrier-specific calorific value when available.

Parameter	Value / status
Value	1.108

Unit / basis: kWh Hs per kWh Hi
Effective / applicable period: 2030
Source: EBeV 2030, Anlage 2 ↗https://www.gesetze-im-internet.de/ebev_2030/anlage_2.html
Last checked: 2026-09-26

Heating oil emission factors

Heizöl EL; direct combustion CO₂ only. Select the unit matching the input.

Parameter	Value / status
Per Hi (kWh)	0.2664
Per Litre	2.6763

Unit / basis: kg CO₂/kWh Hi; kg CO₂/litre
Effective / applicable period: 2030
Source: EBeV 2030, Anlage 2 ↗https://www.gesetze-im-internet.de/ebev_2030/anlage_2.html
Last checked: 2026-09-26

Other carriers

No default: require the supplier's factor, basis, year and source. Missing factors are a separately warned data gap, never zero.

Parameter	Value / status
LPG	n/a — supplier factor missing
District Heating	n/a — supplier factor missing
Other	n/a — supplier factor missing

Unit / basis: kg CO₂ per supplier-stated unit
Effective / applicable period: Supplier reporting year
Source: Supplier-specific declaration required ↗https://www.bafa.de/
Last checked: 2026-09-26

Biomass treatment

Biogenic CO₂ is reported separately and not included in the fossil Scope 1 total; upstream, CH₄ and N₂O excluded from this direct-CO₂ screening.

Parameter	Value / status
Value	memo line only

Unit / basis: kg CO₂
Effective / applicable period: Reporting year
Source: Greenhouse Gas Protocol Scope 1 guidance ↗https://ghgprotocol.org/corporate-standard
Last checked: 2026-09-26

Grid electricity factors

Location-based, direct generation CO₂. UBA states 379 g/kWh for 2023. Use the consumption year; if unavailable use the nearest available year and state ‘nearest available factor’ in assumptions.

Parameter	Value / status
2022	0.434
2023	0.379
2024	0.353
2025	0.344

Unit / basis: kg CO₂/kWh
Effective / applicable period: 2022–2025
Source: Umweltbundesamt (UBA), German electricity mix ↗https://www.umweltbundesamt.de/themen/co2-emissionen-pro-kilowattstunde-strom-2025-nur
Last checked: 2026-09-26

DWD climate factor

Only for an indicative residential energy class when consumption is not already weather-adjusted by the source. Never apply to emissions or electricity.

Parameter	Value / status
Value	optional, user-supplied

Unit / basis: dimensionless heating fuel adjustment
Effective / applicable period: Reporting period
Source: Deutscher Wetterdienst (DWD), Klimafaktoren ↗https://www.dwd.de/DE/leistungen/klimafaktoren/klimafaktoren.html
Last checked: 2026-09-26

Annualisation rules

Most recent consecutive 12 months are complete; 6–11 months with at least 350‰ heating coverage are preliminary. Electricity prorated by calendar days. Show preliminary warning on every derived output.

Parameter	Value / status
Minimum Months	6
Complete Months	12
Minimum Heating Coverage Permille	350

Unit / basis: consecutive months; ‰ annual heating coverage
Effective / applicable period: Model version 1.0.0
Source: EnergyLens screening assumption; ista monthly weights ↗https://www.ista.com/de/kontakt-service/fachwissen/gradtagszahlentabelle/
Last checked: 2026-09-26

Plausibility bounds

Non-blocking plausibility notice only; the limits are not building performance standards.

Parameter	Value / status
Minimum Final (kWh) Per M2	20
Maximum Final (kWh) Per M2	500

Unit / basis: kWh/m²/year entered area basis
Effective / applicable period: Methodology version 1.0.0
Source: EnergyLens screening assumption ↗https://www.dena.de/
Last checked: 2026-09-26

Grid outlook assumption

EnergyLens assumption, not an official projection. Linear between milestones; outlooks must also show the grid factor held constant.

Parameter	Value / status
Start · Year	2025
Start · Factor	0.344
Milestones · option 1 · Year	2030
Milestones · option 1 · Factor	0.15
Milestones · option 2 · Year	2045
Milestones · option 2 · Factor	0.02
After2045	constant
Sensitivity	grid factor held constant

Unit / basis: kg CO₂/kWh
Effective / applicable period: 2025–2045
Source: EnergyLens assumption based on latest UBA actual value ↗https://www.umweltbundesamt.de/themen/co2-emissionen-pro-kilowattstunde-strom-2025-nur
Last checked: 2026-09-26

Market-based electricity memo

Green tariffs or guarantees of origin are excluded from main location-based KPIs; show separately only with documented supplier data.

Parameter	Value / status
Value	memo only when supplier-specific data are supplied

Unit / basis: kg CO₂/kWh
Effective / applicable period: Reporting year
Source: GHG Protocol Scope 2 Guidance ↗https://ghgprotocol.org/scope-2-guidance
Last checked: 2026-09-26

Reduction reference & CO₂ prices

A sector-wide statutory reference is not an individual building target. Price scenarios are assumptions, not forecasts.

German building-sector reference

German building-sector reference (KSG), applied proportionally to this building. A pace-of-reduction reference, not an asset-specific target. The post-2030 linear extension is an EnergyLens assumption, not a statutory asset pathway.

Parameter	Value / status
Annual · 2020	118
Annual · 2021	113
Annual · 2022	108
Annual · 2023	102
Annual · 2024	97
Annual · 2025	92
Annual · 2026	87
Annual · 2027	82
Annual · 2028	77
Annual · 2029	72
Annual · 2030	67
Assumed End · Year	2045
Assumed End · Value	0

Unit / basis: Mt/year (statutory sector greenhouse-gas reference, not building CO₂)
Effective / applicable period: 2020–2030 statutory; 2031–2045 assumption
Source: KSG Anlage 2a; KSG §3 for assumed post-2030 end point ↗https://www.gesetze-im-internet.de/ksg/anlage_2a.html
Last checked: 2026-09-26

BEHG CO₂ prices

The 2026 and 2027 figures are indicative points within a €55–65/t corridor, not guaranteed prices.

Parameter	Value / status
Annual · 2021	25
Annual · 2022	30
Annual · 2023	30
Annual · 2024	45
Annual · 2025	55
Annual · 2026	60
Annual · 2027	60
Corridor · 2026 · option 1	55
Corridor · 2026 · option 2	65
Corridor · 2027 · option 1	55
Corridor · 2027 · option 2	65

Unit / basis: €/t CO₂, nominal, net of VAT
Effective / applicable period: 2021–2027
Source: BEHG; German Bundestag notice for 2027 ↗https://www.bundestag.de/presse/hib/kurzmeldungen-1210950
Last checked: 2026-09-26

ETS2 price scenarios

Scenario assumptions, not forecasts. Linear between points; constant beyond 2035. Low scenario is an indicative nominal proxy for ETS2 price-stability intent, not a verified statutory price.

Parameter	Value / status
Start Year	2028
Low · option 1 · Year	2028
Low · option 1 · Value	60
Low · option 2 · Year	2035
Low · option 2 · Value	60
Central · option 1 · Year	2028
Central · option 1 · Value	90
Central · option 2 · Year	2030
Central · option 2 · Value	110
Central · option 3 · Year	2035
Central · option 3 · Value	140
High · option 1 · Year	2028
High · option 1 · Value	130
High · option 2 · Year	2030
High · option 2 · Value	160
High · option 3 · Year	2035
High · option 3 · Value	210
After2035	constant

Unit / basis: €/t CO₂, nominal, net of VAT
Effective / applicable period: 2028–2035
Source: EnergyLens scenarios; high case based on EWI Köln 2025 ↗https://www.ewi.uni-koeln.de/cms/wp-content/uploads/2025/04/EU-ETS2_Endbericht.pdf
Last checked: 2026-09-26

Residential CO₂ VAT

For residential tenant pass-through, display both net and gross CO₂ costs; verify the applicable invoice and tax treatment.

Parameter	Value / status
Value	0.19

Unit / basis: share of net CO₂ costs
Effective / applicable period: 2026
Source: German VAT Act (UStG), §12 ↗https://www.gesetze-im-internet.de/ustg_1980/__12.html
Last checked: 2026-09-26

Cost allocation

Residential allocation uses Wohnfläche and verified billing-period inputs. Exceptions require review.

Residential CO₂ cost allocation

Residential-only tier thresholds; calculate only when verified Wohnfläche, energy carrier and billing-period emissions are supplied.

Parameter	Value / status
· option 1 · Below	12
· option 1 · Share	0
· option 2 · Below	17
· option 2 · Share	10
· option 3 · Below	22
· option 3 · Share	20
· option 4 · Below	27
· option 4 · Share	30
· option 5 · Below	32
· option 5 · Share	40
· option 6 · Below	37
· option 6 · Share	50
· option 7 · Below	42
· option 7 · Share	60
· option 8 · Below	47
· option 8 · Share	70
· option 9 · Below	52
· option 9 · Share	80
· option 10 · From	52
· option 10 · Share	95

Unit / basis: kg CO₂/m² Wohnfläche/year → landlord share %
Effective / applicable period: Applicable statute
Source: CO2KostAufG ↗https://www.gesetze-im-internet.de/co2kostaufg/
Last checked: 2026-09-26

Non-residential CO₂ cost allocation

Predominantly non-residential use; confirm tenancy and statutory exceptions before application.

Parameter	Value / status
Landlord	50
Tenant	50

Unit / basis: % of CO₂ costs
Effective / applicable period: Applicable statute
Source: CO2KostAufG ↗https://www.gesetze-im-internet.de/co2kostaufg/
Last checked: 2026-09-26

New-heating CO₂ cost allocation

Summary of GModG; see the official text.

Parameter	Value / status
Installed After	2026-07-29
Applies From	2028-01-01
Landlord	50
Tenant	50
Carriers · option 1	gas
Carriers · option 2	oil
Carriers · option 3	LPG

Unit / basis: % of CO₂ costs
Effective / applicable period: 2028-01-01
Source: GModG and CO2KostAufG ↗https://www.gmodg.bund.de/GEGPortal/DE/GEGRegelungen/GModG_neu/GModG_neu-node.html
Last checked: 2026-09-26

CO₂ cost allocation exceptions

Do not calculate adjustments: flag potential hardship and protected-building exceptions for professional review.

Parameter	Value / status
Hardship	§5d: small landlords with at most 6 units in class G/H
Protected Buildings · option 1	Denkmalschutz
Protected Buildings · option 2	Milieuschutz

Unit / basis: flag only
Effective / applicable period: Applicable statute
Source: CO2KostAufG; GModG ↗https://www.gesetze-im-internet.de/co2kostaufg/
Last checked: 2026-09-26

Energy classes & building rules

Consumption-based residential classes are indicative. Non-residential classes require calculated primary-energy demand and cannot be inferred from bills.

Residential energy classes

Indicative class (consumption-based estimate). Not an Energieausweis. Only authorised issuers can issue an Energieausweis. Boundaries are inclusive except H, which is above 250.

Parameter	Value / status
· option 1 · Class	A+
· option 1 · Max	30
· option 2 · Class	A
· option 2 · Max	50
· option 3 · Class	B
· option 3 · Max	75
· option 4 · Class	C
· option 4 · Max	100
· option 5 · Class	D
· option 5 · Max	130
· option 6 · Class	E
· option 6 · Max	160
· option 7 · Class	F
· option 7 · Max	200
· option 8 · Class	G
· option 8 · Max	250
· option 9 · Class	H
· option 9 · Above	250

Unit / basis: kWh/m² AN/year, final energy
Effective / applicable period: Applicable statute
Source: GEG Anlage 10 ↗https://www.gesetze-im-internet.de/geg/anlage_10.html
Last checked: 2026-09-26

Residential area conversion

Use only when AN is unknown and Wohnfläche is documented; 1.35 applies to one- and two-family houses with heated basement. Never substitute NRF or BGF; otherwise class not determined. Convert invoiced gas from Hs to Hi.

Parameter	Value / status
Usual	1.2
Small House Heated Basement	1.35

Unit / basis: m² AN per m² Wohnfläche
Effective / applicable period: Applicable statute
Source: GEG area approximation guidance ↗https://www.gesetze-im-internet.de/geg/
Last checked: 2026-09-26

Non-residential classes

Information only: cannot be derived from bills. Never estimate a class. Verify with an authorised Energieausweis issuer.

Parameter	Value / status
· option 1 · Class	A
· option 1 · Max	1
· option 2 · Class	B
· option 2 · Max	1.48
· option 3 · Class	C
· option 3 · Max	1.97
· option 4 · Class	D
· option 4 · Max	2.46
· option 5 · Class	E
· option 5 · Max	2.95
· option 6 · Class	F
· option 6 · Max	3.5
· option 7 · Class	G
· option 7 · Above	3.5

Unit / basis: calculated primary-energy demand ÷ reference-building demand
Effective / applicable period: 2027-01-01
Source: GModG; Gewerbepass summary ↗https://gewerbepass.de/ratgeber-nwg/energieeffizienzklassen
Last checked: 2026-09-26

Non-residential improvement dates

Information only; exemptions may apply. Do not infer compliance from bills or from a consumption-based screening.

Parameter	Value / status
· option 1 · From Year	2030
· option 1 · Above Ratio	3.5
· option 2 · From Year	2033
· option 2 · Above Ratio	2.95

Unit / basis: primary-energy demand/reference-building ratio
Effective / applicable period: 2027-01-01
Source: GModG; Gewerbepass summary ↗https://gewerbepass.de/ratgeber-nwg/energieeffizienzklassen
Last checked: 2026-09-26

Building-law dates

Supplied legislative dates; verify the promulgated statute before applying to an individual building.

Parameter	Value / status
Published	2026-07-28
Heating From	2026-07-29
Epbd From	2027-01-01

Unit / basis: calendar dates
Effective / applicable period: 2026-07-28
Source: GModG; BBSR GEG portal ↗https://www.gmodg.bund.de/GEGPortal/DE/GEGRegelungen/GModG_neu/GModG_neu-node.html
Last checked: 2026-09-26

New-heating biogenic fuel shares

Information only; verify exact statutory text and system-specific exceptions before relying on these supplied milestones.

Parameter	Value / status
Installed After	2026-07-29
Annual · 2029	10
Annual · 2030	15
Annual · 2035	30
Annual · 2040	60

Unit / basis: % biogenic fuel share for newly installed gas/oil heating
Effective / applicable period: 2029–2040
Source: GModG; Görg overview ↗https://www.goerg.de/de/aktuelles/veroeffentlichungen/17-07-2026/gebaeudemodernisierungsgesetz-gmodg-schafft-geg-ab-was-sich-aendert-und-was-bleibt
Last checked: 2026-09-26

Company reporting & funding

Company-wide reporting obligations and indicative grants cannot be established from an individual building record.

Company reporting scope

Company-level scope only; both thresholds required. ESRS E1-6 GHG intensity is per net revenue, not per m². Check current legislation and company-specific status.

Parameter	Value / status
Employees More Than	1000
Net Turnover More Than Eur	450000000
Both Required	true

Unit / basis: employees and €/year net turnover
Effective / applicable period: 2026
Source: EU Omnibus I, Council adoption summary ↗https://www.regulationtomorrow.com/2026/02/omnibus-i-csrd-and-cs3d-simplification-council-of-european-union-adopts-final-text-t-simplify-sustainability-reporting-and-due-diligence-requirements/
Last checked: 2026-09-26

Funding notice

No eligibility, approval or grant is promised; confirm current scheme details directly with the administrators.

Parameter	Value / status
Value	Indicative — verify current conditions at bafa.de / kfw.de before relying on it; eligible-cost caps may reduce the amount

Unit / basis: eligibility notice
Effective / applicable period: 2026-07-21
Source: BAFA and KfW ↗https://www.bafa.de/
Last checked: 2026-09-26

Heat-pump funding

Indicative only; eligibility and caps apply. Owner-occupier bonuses are not modelled. Verify the published funding rules before any calculation.

Parameter	Value / status
Until2027Q1	30
From2027Q1Base	15
Eu Manufactured Bonus	15

Unit / basis: % of eligible costs
Effective / applicable period: 2026-07-21; Q1 2027 proposed change
Source: BEG reform 2026 summary ↗https://www.rebuild-now.com/beg-reform-2026-alle-aenderungen-im-ueberblick/
Last checked: 2026-09-26

Building-envelope funding

Indicative; iSFP bonus is residential only and subject to conditions. The non-residential cap may reduce an award.

Parameter	Value / status
Base	15
Residential Isfp Bonus	5
Non Residential Cost Cap	500

Unit / basis: % of eligible costs; €/m² net floor area cap
Effective / applicable period: 2026-07-21
Source: BEG EM 2026 non-residential summary ↗https://www.energiekosten360.de/foerderung/beg-2026-nichtwohngebaeude/
Last checked: 2026-09-26

Funding exclusions

Indicative only; verify the current funding rules and other potential programmes directly with administrators.

Parameter	Value / status
Non Residential Interior Lighting	not eligible
Solar PV	no BEG grant
Owner Occupier Bonuses	not modelled

Unit / basis: eligibility flags
Effective / applicable period: 2026-07-21
Source: BEG reform 2026 summary ↗https://www.rebuild-now.com/beg-reform-2026-alle-aenderungen-im-ueberblick/
Last checked: 2026-09-26

Editable modelling inputs

These inputs are assumptions, not measured building performance. Estimates depend on the supplied building evidence.

Boiler seasonal efficiency

User-editable assumptions, not measured efficiencies; unknown gas is not a verified equipment classification.

Parameter	Value / status
Condensing Gas	0.95
Older Gas	0.85
Unknown Gas	0.9
Oil	0.85

Unit / basis: fraction, Hi basis
Effective / applicable period: Model version 1.0.0
Source: EnergyLens engineering assumption ↗https://www.bafa.de/
Last checked: 2026-09-26

Heat-pump seasonal performance

User-editable assumptions; results depend on flow temperatures, climate and installation quality.

Parameter	Value / status
Central	3
Low	2.5
High	3.5

Unit / basis: seasonal coefficient of performance
Effective / applicable period: Model version 1.0.0
Source: EnergyLens engineering assumption, air-to-water in existing buildings ↗https://www.bafa.de/
Last checked: 2026-09-26

Solar PV specific yield

User-editable; use PVGIS for a site-specific value. Do not treat this as a measured yield or grant amount.

Parameter	Value / status
Central	900
Range · option 1	850
Range · option 2	1050

Unit / basis: kWh/kWp/year
Effective / applicable period: Model version 1.0.0
Source: EnergyLens German typical-yield assumption; PVGIS for site check ↗https://re.jrc.ec.europa.eu/pvg_tools/en/
Last checked: 2026-09-26

Heating optimisation

User-editable allowance for hydraulic balancing, heating curve and set-points; no guaranteed savings.

Parameter	Value / status
Central	5
Range · option 1	0
Range · option 2	15

Unit / basis: % of heat demand
Effective / applicable period: Model version 1.0.0
Source: EnergyLens engineering assumption ↗https://www.bafa.de/
Last checked: 2026-09-26

Envelope scenario presets

Scenario, not a calculation. The analyst enters the envelope reduction; presets are not derived from building physics.

Parameter	Value / status
· option 1	15
· option 2	30
· option 3	50

Unit / basis: % of heat demand
Effective / applicable period: Model version 1.0.0
Source: EnergyLens analyst presets ↗https://www.bafa.de/
Last checked: 2026-09-26

Heat-pump coverage

Share of heat demand supplied by the heat pump; the remainder stays on the existing fossil carrier.

Parameter	Value / status
Central	100
Range · option 1	0
Range · option 2	100

Unit / basis: % of heat demand
Effective / applicable period: Model version 1.0.0
Source: EnergyLens modelling assumption ↗https://www.bafa.de/
Last checked: 2026-09-26

PV feed-in tariff

Default 0 until the analyst enters the applicable tariff. Exported electricity is never deducted from Scope 2.

Parameter	Value / status
Central	0

Unit / basis: €/kWh exported, net
Effective / applicable period: Model version 1.0.0
Source: User input; EEG feed-in tariffs vary by commissioning date and size ↗https://www.bundesnetzagentur.de/
Last checked: 2026-09-26

Measure screening rules

Electricity savings above the threshold need sub-metering evidence. Simple payback above the cap is shown only as ‘> 30 years’.

Parameter	Value / status
Electricity Saving Warning Percent	30
Payback Display Cap Years	30

Unit / basis: % of electricity use; years
Effective / applicable period: Model version 1.0.0
Source: EnergyLens screening rule ↗https://www.bafa.de/
Last checked: 2026-09-26

Load-profile rules

Timestamps are interpreted in Europe/Berlin with DST (23- and 25-hour days) unless an ISO offset is given. Indicators are screening estimates, not measured savings.

Parameter	Value / status
Allowed Intervals Minutes · option 1	15
Allowed Intervals Minutes · option 2	30
Allowed Intervals Minutes · option 3	60
Interval Tolerance Minutes	1
Minimum Days	28
Recommended Days	365
Time Zone	Europe/Berlin
Zero Run Minimum Intervals	4
Base Load Percentile	5
Night Hours · From	0
Night Hours · To	5
Default Operating Hours · Weekdays · option 1	1
Default Operating Hours · Weekdays · option 2	2
Default Operating Hours · Weekdays · option 3	3
Default Operating Hours · Weekdays · option 4	4
Default Operating Hours · Weekdays · option 5	5
Default Operating Hours · From	7
Default Operating Hours · To	19
Anomaly Mad Multiplier	3
Base Load Excess Multiplier	1.1
Peak Shaving Percentile	99
Top Peaks	10
Indicator Label	indicative — requires on-site verification

Unit / basis: minutes; days; percentile; hours local time; multipliers
Effective / applicable period: Model version 1.0.0
Source: EnergyLens load-profile screening rules ↗https://www.bundesnetzagentur.de/
Last checked: 2026-09-26

Report finding rules

Rule-generated findings only; no free AI text in reports.

Parameter	Value / status
Max Findings	4
Dominant Carrier Share Percent	50
Outlook Comparison Year	2030
Cost Years · option 1	2026
Cost Years · option 2	2030
Exposure Years · From	2026
Exposure Years · To	2035
Outlook Years · From	2024
Outlook Years · To	2045

Unit / basis: count; % of CO₂; years
Effective / applicable period: Model version 1.0.0
Source: EnergyLens report rules ↗https://www.bafa.de/
Last checked: 2026-09-26

Not quantified measures

Not quantified — requires site data.

Parameter	Value / status
· option 1	Domestic hot water system and circulation losses
· option 2	Ventilation heat recovery
· option 3	Building automation and controls
· option 4	Window and door replacement details
· option 5	District-heating connection
· option 6	Heat-distribution upgrades (radiators, flow temperatures)

Unit / basis: list
Effective / applicable period: Model version 1.0.0
Source: EnergyLens screening scope ↗https://www.bafa.de/
Last checked: 2026-09-26

Energieausweis obligation

This screening is not an Energieausweis and cannot replace one.

Parameter	Value / status
Value	On sale, letting or leasing an Energieausweis must be presented; only authorised issuers may prepare it.

Unit / basis: obligation notice
Effective / applicable period: 2026-07-29
Source: GModG / GEG Energieausweis provisions ↗https://www.gmodg.bund.de/GEGPortal/DE/GEGRegelungen/GModG_neu/GModG_neu-node.html
Last checked: 2026-09-26

ESRS building datapoints

E1-6 intensity is per net revenue and must be computed by the reporting company.

Parameter	Value / status
E1_5	Energy consumption MWh by carrier
E1_6	Scope 1 and Scope 2 (location-based) t CO₂

Unit / basis: ESRS datapoints
Effective / applicable period: 2024-01-01
Source: ESRS E1 (Delegated Regulation (EU) 2023/2772) ↗https://eur-lex.europa.eu/eli/reg_del/2023/2772/oj
Last checked: 2026-09-26

Company obligations

Company-level obligations are outside this building screening.

Parameter	Value / status
En Ef G_EDLG	Depend on total company energy use — not assessed.
Taxonomy Sfdr	Not assessed.

Unit / basis: notice
Effective / applicable period: 2023-11-18
Source: EnEfG; EDL-G; EU Taxonomy Regulation; SFDR ↗https://www.gesetze-im-internet.de/enefg/
Last checked: 2026-09-26

No-cost actions

Qualitative only. No savings percentage is attributed unless operational heating optimisation (step 1) is used.

Parameter	Value / status
· option 1	Hydraulic balancing
· option 2	Heating curve adjustment
· option 3	Set-back schedules
· option 4	Circulation pump settings

Unit / basis: qualitative checklist
Effective / applicable period: Model version 1.0.0
Source: EnergyLens screening checklist ↗https://www.bafa.de/
Last checked: 2026-09-26

Let residential economics notice

Shown for let residential buildings.

Parameter	Value / status
Value	Energy-cost savings accrue mainly to tenants. Landlord economics depend on the modernisation levy (§559 BGB) and the CO₂ cost share; these are not modelled.

Unit / basis: notice
Effective / applicable period: 2026
Source: BGB §559; CO2KostAufG ↗https://www.gesetze-im-internet.de/bgb/__559.html
Last checked: 2026-09-26

Finance inputs

User-editable, not a quotation or forecast. Model the CO₂ price component separately; zero escalation is an explicit assumption, not missing data.

Parameter	Value / status
Discount Rate	5
Horizon Years	20
Energy Price Escalation	0

Unit / basis: %/year discount rate; years horizon; %/year price escalation
Effective / applicable period: Model version 1.0.0
Source: EnergyLens modelling assumption ↗https://www.bafa.de/
Last checked: 2026-09-26

Partial-year heating weights

Heating-fuel partial-year annualisation only. Electricity is prorated by actual calendar days. Do not annualise without known coverage dates; estimated figures must be labelled.

Parameter	Value / status
Jan	170
Feb	150
Mar	130
Apr	80
May	40
Jun	13.33
Jul	13.33
Aug	13.34
Sep	30
Oct	80
Nov	120
Dec	160

Unit / basis: ‰ of annual heating degree-day weight
Effective / applicable period: Standard monthly table
Source: ista standard Gradtagszahlentabelle ↗https://www.ista.com/de/kontakt-service/fachwissen/gradtagszahlentabelle/
Last checked: 2026-09-26

Limitations

Recorded annual energy totals can support labelled, indicative gas and location-based electricity CO₂ estimates, but cannot establish measured equipment performance, official energy classes, building-specific targets or financial outcomes. Where a supplier factor, reference area, period or cost is missing, the result remains unavailable rather than being set to zero.

This report is an automated desk-based screening based on data supplied by the client and on public reference values. It is not an energy audit under DIN EN 16247 or EDL-G, not an Energieausweis under GModG, not an Energieberatung eligible for BAFA/KfW funding, and not legal, tax, valuation or investment advice. All figures are indicative. Subsidy eligibility, costs and savings must be verified by qualified professionals before any decision. EnergyLens is not affiliated with GRESB or any public authority.

Methodology version 1.0.0 · Last checked 2026-09-26

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