Concept project — fictional brand

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Terrace house with a south-facing roof

A family house, mostly evening use.

Fictional company. Every figure on this site is an illustrative example.

Concept scenario, not an installed system

The scenario

The roof is large enough to make more than the house needs, but the family is out until six. With a battery the evening is covered much better; without one most of the midday power goes to the grid.

Storage matters more than extra panels here.

Inputs
3,500 kWh a year, 40 m2 of roof, Temperate centre, 5 kWh battery
System size
3.4 kWp
Yearly generation
3,080 to 3,850 kWh
Met on site
59%
Annual energy value (illustrative range)
EUR 520 to EUR 820

Open this scenario in the calculator

A hillside house under a pink dusk sky.
Generated illustration, illustrative. Not a Lumivane installation.

A day in this scenario

BatteryGrid

A sunny day in this scenario: 3.4 kWp, 5 kWh battery (illustrative)

The roof makes more than the house can use.

13:00: the roof makes 2.7 kW. The house uses 0.6 kW of it and 2.2 kW goes to the grid. The battery holds 4.5 of 4.5 kWh.

Sky
  • Solid band: straight from the roof to the house
  • Dashed band: in or out of the battery
  • Dotted band: to or from the grid

Day totals: 22.5 kWh generated, 6.1 to the home, 4.6 to the battery, 11.8 to the grid.

These scenarios are fictional. No customer, installation or capacity is implied.