Electricity prices and grid fees

For the economic analysis you enter two price components, both in the step "Tariff & grid fees":

• the working price (Arbeitspreis) (€/kWh) via one of four tariff models,
• the demand charge (Leistungspreis) (€/kW) for the grid fees (Netzentgelte).

Working price: tariff models

The working price is the price per kWh. Furo supports four models:

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Grid fee

Exactly one model applies, and only its fields are shown. AgNes you switch on at the top right of the card; the other models you pick under "Billed on", which appears as soon as more than one of them is on offer:

Annual consumption decides the variable grid fees; AgNes additionally depends on the voltage level: above low voltage it applies whatever the consumption, in low voltage only from 100,000 kWh. Below 100,000 kWh both can therefore be on offer.

The grid fee working price (€/kWh) sits inside the all-in electricity price. You enter it as soon as you open the price breakdown — where it is one of its items and counts into the total. If you only give an all-in electricity price, it is contained in that and is not asked for separately. Spain has no such block: contracted power per period applies there, entered in its own Spain section.

Demand charge

The demand charge is the price network operators charge for providing the maximum connection capacity required, given in €/kW. The battery lowers it by shaving the peak load. Typical values are €20–300/kW/year or €2–25/kW/month.

Annual or monthly billing

Whether the demand charge relates to the annual peak load or the monthly peak load depends on the country of your address; the unit adapts accordingly (€/kW/year or €/kW/month):

• Germany: annual (annual peak load).
• Switzerland: monthly, switchable to annual via the field "Power Price Period" — some distribution network operators (DSOs) will bill the demand charge on the annual peak load from 2027.
• Austria: monthly, switchable to annual via the field "Power Price Period".

2,500-hour rule (Germany only)

In Germany the demand charge can be entered in two tiers under the 2,500-hour rule (2.500-Vollbenutzungsstunden-Regel, § 19 StromNEV), the German grid-fee ordinance: one value each for ≥ 2,500 hours and < 2,500 hours. The second value is optional; without it, the value for ≥ 2,500 hours is used. If the battery lifts the usage hours past 2,500 (or drops them below), Fufu points this out on the results page so you can add the second price sheet.

Grid fees from your grid operator (Germany only)

For German addresses, Furo looks up the grid operator for your address and shows it next to the "Voltage level" field, right above the electricity tariff. When you pick your connection's voltage level (HS to NS), Furo takes the demand charge and grid energy price from the operator's price sheet, plus, depending on annual consumption, the time windows for atypical grid usage or variable grid fees. The level also decides whether AgNes is on offer. If you pick none, Furo assumes medium voltage.

AgNes (Germany, from 2029)

Under the Federal Network Agency's AgNes draft, the demand charge on the measured annual peak disappears from 2029. Instead you book a capacity with your grid operator and pay a capacity price (€/kW/year) on it, plus two grid working prices: grid working price 1 for consumption below the booked capacity and a higher grid working price 2 for consumption above it, 2 to 3.5 times working price 1 under the draft. Working price 2 is charged only on the energy above the booked capacity, not on everything drawn during the hours it is exceeded.

AgNes applies to every connection above low voltage and, in low voltage, from 100,000 kWh of grid withdrawal a year. If you plan with less than 100,000 kWh without having picked a voltage level, Furo points this out at the voltage level — in low voltage AgNes would not be possible.

How to set it. Flip the AgNes switch at the top right of the Tariff & grid fees card. Working price 1 and 2 then sit in the price breakdown, the capacity price under the grid fee. Furo proposes all three, converted from your grid operator's price sheet for your voltage level — medium voltage if you have not picked one; every new pick of the voltage level sets the proposals afresh. No grid operator has published any yet, so check them as your own assumptions.

What Furo derives. Furo finds the most economical booked capacity itself, once without and once with the battery, and reports both alongside the energy drawn above it.

What you see in the results. The project card shows the electricity price below and above the booked capacity, each with its grid working price in the breakdown, and the capacity price instead of the demand charge. At the very bottom you get the load duration curve: the year's grid draw sorted from the highest interval down, once without and once with the battery, each with its booked capacity as a line. Where the line crosses the curve you can read off how many hours of the year the capacity is exceeded.

In the results, the grid-fee bar of the earnings breakdown is then called Capacity price: the capacity price on the booked capacity the battery saves. What the battery saves on the grid working price on top, by moving energy from working price 2 above the booked capacity to working price 1 below it, stands beside it as its own bar, Grid working price (AP1/AP2). In the electricity bill of the shareable link the capacity price takes the place of the power price.

Grid fees under SNE-V (Austria only)

For Austrian addresses, you pick the "Grid Level" (NE 4–7) above the electricity tariff. Furo then takes the demand charge, grid usage fee and grid loss fee from the Systemnutzungsentgelte-Verordnung (SNE-V 2018, 2026 version).

Tariffs apply per Netzbereich (grid area), which follows the grid operator, not the federal state. Furo finds the operator from the postcode and shows it below the grid level. If two operators share a postcode, first pick the right one in the "Grid operator" field.

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Price entry from your electricity bill

On the bill all price components are listed individually, all as net amounts. That is exactly how you enter them in Furo: net (excl. VAT); the tool fills their sum into Total electricity price itself, marked "from components". Purple marks the Electricity Price, red the Power Price:

There are two price fields: the Electricity Price (€/kWh) and the Power Price (€/kW). Below the Electricity Price field sits "Break down price". It determines how you enter the Electricity Price:

• Collapsed (Image 1): you enter the sum of all €/kWh items into Total electricity price yourself.
• Expanded (Image 2): one field per item; the levies are pre-filled and overridable. Total electricity price stays above them, but now shows the sum of the items and can no longer be typed into.

Image 1: collapsed, a single "Electricity Price" field.

Image 2: expanded, the total on top and one field per price component below.

This is how the items on the bill map to the fields in the tool (detailed mode, Image 2; in the simple mode the same items together make up the one electricity price value):

In the example: Electricity Price €0.174860/kWh, Power Price €89.2100/kW/year (net; Germany: annual). You add separate values for ≥ and < 2,500 hours via the "+" field (see "2,500-hour rule" above).