ᐅ Savings from photovoltaic system, battery storage, and electricity cloud
Created on: 4 Aug 2022 10:12
D
DaGoodness
In the construction cost thread, the topic of the usefulness of battery storage, energy cloud services, etc., came up recently.
So, here is a dedicated discussion thread on this subject.
Since May 2020, I have had a 10 kWp (kilowatt peak) system on my roof and a 10 kWh (kilowatt-hour) battery storage in the utility room. Additionally, since August 2020, I have been using an energy cloud service provided by the company Senec (EnBW).
With this service, the electricity fed into the grid during summer is credited to an account and can be drawn again in winter at favorable conditions. The general opinion on this topic everywhere is that it is not worthwhile. The same applies to the question of whether to have storage or not.
Therefore, I made a cost breakdown for myself and compared my current expenses with different scenarios such as "energy cloud service or regular electricity tariff," "photovoltaic system with and without storage," and the costs "completely without a photovoltaic system."
Attached you will find my breakdown.
Looking forward to an active discussion.
So, here is a dedicated discussion thread on this subject.
Since May 2020, I have had a 10 kWp (kilowatt peak) system on my roof and a 10 kWh (kilowatt-hour) battery storage in the utility room. Additionally, since August 2020, I have been using an energy cloud service provided by the company Senec (EnBW).
With this service, the electricity fed into the grid during summer is credited to an account and can be drawn again in winter at favorable conditions. The general opinion on this topic everywhere is that it is not worthwhile. The same applies to the question of whether to have storage or not.
Therefore, I made a cost breakdown for myself and compared my current expenses with different scenarios such as "energy cloud service or regular electricity tariff," "photovoltaic system with and without storage," and the costs "completely without a photovoltaic system."
Attached you will find my breakdown.
Looking forward to an active discussion.
At the beginning of the year, we received and accepted an offer for a 13 kWp system plus a 10 kWh battery storage for €19,883 net. There is still a subsidy of nearly one thousand euros from the state for the battery, so the total is under €19,000 net.
For about a €3,000 upgrade, we ordered an inverter for off-grid operation.
So roughly €22,000 net in total.
For about a €3,000 upgrade, we ordered an inverter for off-grid operation.
So roughly €22,000 net in total.
DaHias81 schrieb:
In October 2020, I received an offer for a 9.9 kWp system and a 7.7 kWh battery storage for just over 19,000, so this isn’t unrealistically far off... It’s hard to imagine now. In July, I accepted an offer for a 7 kWp system plus 7.5 kWh battery storage with backup power capability for 18,700 before taxes. There is an 800 subsidy and a 400 discount to be deducted from that. Gathering offers took 4 months, 6 weeks were spent finalizing the details, and within the next two weeks, the system is scheduled to be installed on the roof and connected. The battery storage is expected to be installed by October at the latest.
sergutsh schrieb:
...
For about a 3k upgrade, we ordered a inverter for off-grid operation.
So approximately 22k netI would like to add another point regarding the use of the storage system: off-grid operation of the photovoltaic system, or at least emergency power operation in case of grid failure or outage. Because then even the fully loaded roof produces nothing.sergutsh schrieb:
I would like to raise another aspect regarding the use of the storage system: off-grid operation of the photovoltaic system, or at least emergency power operation in case of a grid failure/outage. Because in that case, even a fully loaded roof delivers nothing.This is indeed a very cool option. However, most systems do not support this because their inverters cannot feed power into the home network without the grid.Scout** schrieb:
This is indeed a very cool option. However, most systems do not support this because their inverters cannot feed power into the household network without grid connection.Here, a distinction is also made between off-grid capability and emergency power functionality.D
DaGoodness5 Aug 2022 10:58I generally think a backup power function is a great feature. Senec also offers this as a paid add-on package.
The only downside is that Senec storage systems require an online connection. After 72 hours without internet, the storage system automatically shuts down.
So if the power outage lasts longer than 72 hours, the function won’t work anymore :p
This is also problematic in case of an extended internet outage.
The only downside is that Senec storage systems require an online connection. After 72 hours without internet, the storage system automatically shuts down.
So if the power outage lasts longer than 72 hours, the function won’t work anymore :p
This is also problematic in case of an extended internet outage.
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