Struct SpotpreisInterval 

pub struct SpotpreisInterval {
    pub period_from: OffsetDateTime,
    pub period_to: OffsetDateTime,
    pub menge_kwh: Decimal,
    pub nne_rate_ct_per_kwh: Decimal,
    pub epex_spot_ct_per_kwh: Option<Decimal>,
}

One dispatch interval for a spot-linked Netzentgelt (not a §14a module).

Each interval represents a 15-min period during which the DSO exercised load control and the NNE rate is derived from the day-ahead spot price via the formula published in PreisblattNetznutzung.lastvariablePreispositionen.

Calculation

Einsatzkosten = menge_kwh × nne_rate_ct_per_kwh / 100

The NB computes one InvoicePosition per interval, allowing the LF (and their customers) to see the exact tariff breakdown for each dispatch event.

Caller responsibility

The caller (service layer) must:

1. Fetch the EPEX Spot day-ahead price for each 15-min interval from productd or the PreisblattNetznutzung formula.
2. Apply the formula from lastvariablePreispositionen to derive nne_rate_ct_per_kwh.
3. Fetch menge_kwh from edmd Lastgang for the interval.

grid-billing receives pre-calculated rates — it does NOT query EPEX or edmd.

Regulatory basis

Not a §14a module. BK6-22-300 defines exactly three — Modul 1 (pauschale Reduzierung), Modul 2 (prozentuale Arbeitspreisreduzierung) and Modul 3 (zeitvariable Netzentgelte in three Tarifstufen) — and none of them is spot-linked. See ArbeitspreisModell::SpotpreisNetzentgelt, which states the same thing.

This models a Netzentgelt whose rate follows the spot price under the Netzbetreiber’s own PreisblattNetznutzung formula: the NNE varies per 15-minute interval. The rates arrive already derived — this crate never queries a spot market.

Fields

period_from: OffsetDateTime

UTC start of this controlled dispatch interval (ISO-8601).

Typically the start of a 15-min settlement slot.

period_to: OffsetDateTime

UTC end of this controlled dispatch interval (ISO-8601).

Typically period_from + 15 min.

menge_kwh: Decimal

Energy consumption (or reduction) during this interval in kWh.

Sourced from edmd Lastgang for the MaLo during the interval window.

nne_rate_ct_per_kwh: Decimal

Effective NNE rate in ct/kWh for this interval.

Derived from the LastvariablePreisposition formula applied to the applicable EPEX Spot day-ahead price. Pre-calculated by the caller.

epex_spot_ct_per_kwh: Option<Decimal>

EPEX Spot day-ahead price in ct/kWh used to derive nne_rate_ct_per_kwh.

Stored in the CalculationTrace.explanation for audit transparency. None when the rate was determined by a fixed formula without market reference.

Trait Implementations

impl Clone for SpotpreisInterval

fn clone(&self) -> SpotpreisInterval

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpotpreisInterval

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SpotpreisInterval

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SpotpreisInterval

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SpotpreisInterval

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SpotpreisInterval