ᐅ Balcony Solar System – With or Without Battery Storage? Orientation?

I have now ordered a balcony power system with 900 watts (2 bifacial panels), but without a battery storage. If I notice that too much electricity is going unused, I can always add a storage unit later.

A good idea for the start. If you can schedule your appliances to run during the day, you won’t waste much electricity.

We have now not used approximately 151 kWh according to the meter over about 11 months... is that a lot/little/normal?

Yosan schrieb:

According to the meter, we haven’t used about 151 kWh ourselves in roughly 11 months… is that a lot/little/normal?

I would say that’s not much. At 25 cents per kWh, that would be about 30 euros in 11 months.

Hello,

in a private setting, you can almost apply the following simple rule for photovoltaic systems:

• Photovoltaics: as large as possible, oriented in all directions
• Storage: none

By the time the storage system pays for itself, it is usually worn out. Many charge cycles make it economically viable, but also cause it to wear out faster. It will probably take some time before the break-even point is clearly reached. Until then, a storage system is a nice hobby that provides a good feeling of self-sufficiency.

The situation is somewhat different with balcony power plants. Due to the limitation of the maximum allowable power, storage has a functional advantage. I can install more modules than the maximum allowed feed-in capacity. The storage acts as a buffer, and the additional modules ensure a constant supply.

Best regards

derdietmar schrieb:

Hello,

In a private setting, you can almost apply the following simple rule for photovoltaic systems:

• Photovoltaic system: as large as possible, facing all directions
• Storage: none

I would no longer make such a general statement. Although I installed my system this way earlier this year, government policies have made these systems increasingly less attractive, so I am not sure how applicable this will be in the future.

1.)
Systems commissioned from the end of February onwards can be shut off if there is too much excess power fed into the grid, and the compensation is only paid after the regular 20-year period. If this happens frequently, you will be drawing electricity from the grid even when the sun is shining.

2.)
The feed-in tariff keeps decreasing, so the compensation barely covers the cost price anymore.

3.)
Additionally, there is currently talk about introducing a charge for feeding electricity into the grid. This would make storage solutions even more attractive.

4.)
Without storage, you cannot benefit from variable electricity tariffs such as Tibber.