Enum TariffSource 

pub enum TariffSource {
    Statutory,
    Auction(AusschreibungMetadata),
    Transitional(Paragraph100Rule),
}

How the Anzulegender Wert (AW) was determined for a plant.

The AW is the statutory or tendered rate that drives the Marktprämie spread and serves as the reference for all other payment types.

This is orthogonal to SettlementScheme: the same MarketPremium scheme can be used for both statutory-AW plants (Statutory) and BNetzA tender plants (Auction). Only the AW source — and the billing position label — differ.

Variants

Statutory

§21 EEG — Statutory AW, set by law at commissioning date (§48 EEG 2023).

Rate is fixed for the 20-year Förderdauer. For solar, the §49 EEG 2023 semi-annual degression selects the value from the commissioning date — see crate::rates::solar_pv_ueberschuss_aw_ct. The caller supplies the resolved rate in direktverm_aw_ct / verguetungssatz_ct.

Auction(AusschreibungMetadata)

§§22a, 28 EEG — BNetzA tender award: AW set by sealed-bid auction.

The award value (award_ct in AusschreibungMetadata) replaces the statutory AW for the full Förderdauer. Subsequent statutory degression does NOT apply to Ausschreibungsanlagen.

Transitional(Paragraph100Rule)

§100 EEG — Transitional rule: old plant uses old AW from prior EEG version.

Plants commissioned before 01.01.2023 may settle under the rules of the EEG version in force at commissioning, not EEG 2023. The specific rule is identified by Paragraph100Rule.

Implementations

impl TariffSource

pub fn is_auction(&self) -> bool

Returns true for BNetzA tender plants.

pub fn is_transitional(&self) -> bool

Returns true for plants using the §100 Übergangsregelung.

pub fn is_biogas_sect51b(&self) -> bool

Returns true for §51b biogas Ausschreibungsanlagen.

When true, §51/§51a do NOT apply, and the AW is zero for periods where epex_avg_ct_kwh ≤ 2 ct/kWh (§51b EEG 2023).

pub fn is_innovation_auction(&self) -> bool

Returns true for §39n Innovationsausschreibung awards.

These plants receive a fixed market premium (feste Marktprämie = the Zuschlagswert per kWh, §3 InnAusV) rather than the gleitende Marktprämie max(0, AW − Marktwert) — so the payout does not shrink as the Monatsmarktwert rises.

Trait Implementations

impl Clone for TariffSource

fn clone(&self) -> TariffSource

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TariffSource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TariffSource

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for TariffSource

fn eq(&self, other: &TariffSource) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TariffSource