ᐅ Planning Photovoltaic Systems – Potential Retrofit of Battery Storage
Created on: 12 Feb 2018 10:04
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How do you plan a photovoltaic system that might later be equipped with a battery storage, if rising electricity prices and falling battery prices make this economically viable?
Option 1:
- Design and plan the system including storage, but simply leave out the battery for now.
- Very simple retrofit option: only connection of the battery required.
- However, as long as no battery is added, the system is oversized because there are too many panels on the roof.
Option 2:
- Design and plan the system including storage, but leave out the battery and install fewer panels on the roof.
- Retrofit option available by adding the battery and installing additional panels.
Option 3:
- Initially design the system completely for operation without storage (saves costs).
- Retrofitting later is somewhat more complex.
Where do you see the best option when weighing the three cost factors:
- Installation costs of the system (without storage)
- Economic efficiency of the system operating without storage
- Possible costs of converting to operation with storage
4-person household, gable roof surfaces facing west and east, household electricity consumption 5200 kWh per year, geothermal heat pump
Option 1:
- Design and plan the system including storage, but simply leave out the battery for now.
- Very simple retrofit option: only connection of the battery required.
- However, as long as no battery is added, the system is oversized because there are too many panels on the roof.
Option 2:
- Design and plan the system including storage, but leave out the battery and install fewer panels on the roof.
- Retrofit option available by adding the battery and installing additional panels.
Option 3:
- Initially design the system completely for operation without storage (saves costs).
- Retrofitting later is somewhat more complex.
Where do you see the best option when weighing the three cost factors:
- Installation costs of the system (without storage)
- Economic efficiency of the system operating without storage
- Possible costs of converting to operation with storage
4-person household, gable roof surfaces facing west and east, household electricity consumption 5200 kWh per year, geothermal heat pump
A
andreashm5 Mar 2018 19:43Fuchur schrieb:
Let’s assume a household consumption of 4000 kWhThat is just the consumption of the car. The house's energy needs are additional.
However, economically, storage systems are often not worthwhile at the moment. With an increasing number of electric vehicles, this could change—especially if used batteries then have a second life as stationary storage in solar-powered homes.
M
Mastermind15 Mar 2018 21:36Definitely share your plan in the Photovoltaic forum.
There, you’ll get advice and, most importantly, a system that suits you and your house—not the seller’s budget.
You’ll also find contacts for national solar installers who handle large volumes annually and can therefore offer better prices.
Locally, a 10kWp photovoltaic system from solar installers would have cost around €1,800 per kWp (without battery).
From national providers, it was €1,185 per kWp. For a 10kWp system, that quickly adds up to a savings of about €6,000.
There, you’ll get advice and, most importantly, a system that suits you and your house—not the seller’s budget.
You’ll also find contacts for national solar installers who handle large volumes annually and can therefore offer better prices.
Locally, a 10kWp photovoltaic system from solar installers would have cost around €1,800 per kWp (without battery).
From national providers, it was €1,185 per kWp. For a 10kWp system, that quickly adds up to a savings of about €6,000.