As part of our new build, we plan to install a photovoltaic system on the roof. The roof area is approximately 160sqm (1,720 sq ft), with a pitch of 25 degrees, a gable roof with one side facing northeast and the other southwest. Since we are both civil servants and income from photovoltaic systems requires approval and may later be counted towards our pension, feed-in is not an option for us.
The system is intended solely to reduce our electricity consumption. We will have a ground-source heat pump with a borehole, a 300l (80 gallons) hot water storage tank, and a ventilation system for heating. The house is designed to meet KFW 55 standard (higher efficiency is no longer possible due to the basement).
Since I am home starting at midday, appliances such as the washing machine, dryer, dishwasher, and others will mainly be used during the day.
Additionally, we live in an area with above-average sunshine and fewer cloudy days, even in winter.
We do not want a battery storage system yet, even though this means we will occasionally export surplus electricity. Once batteries become more affordable, we plan to add one later.
How should the system be sized for our needs?
The system is intended solely to reduce our electricity consumption. We will have a ground-source heat pump with a borehole, a 300l (80 gallons) hot water storage tank, and a ventilation system for heating. The house is designed to meet KFW 55 standard (higher efficiency is no longer possible due to the basement).
Since I am home starting at midday, appliances such as the washing machine, dryer, dishwasher, and others will mainly be used during the day.
Additionally, we live in an area with above-average sunshine and fewer cloudy days, even in winter.
We do not want a battery storage system yet, even though this means we will occasionally export surplus electricity. Once batteries become more affordable, we plan to add one later.
How should the system be sized for our needs?
J
Janny19832 Mar 2017 18:26Huh... what is this about the feed-in tariff and the pension? I've never heard of that before. Could you explain it?
T
toxicmolotof2 Mar 2017 18:38Do you have children?
1. For the exemption limit specified in § 14a BeamtVG, income must also be taken into account that does not result from a commercial activity significantly involving the retired civil servant’s labor.
2. Income from operating a photovoltaic system is considered business income according to § 53 (7) BeamtVG.
Under civil service law, anyone who feeds electricity from a photovoltaic system into the grid is always regarded as an entrepreneur.... This income is deducted from the pension above a certain allowance...
2. Income from operating a photovoltaic system is considered business income according to § 53 (7) BeamtVG.
Under civil service law, anyone who feeds electricity from a photovoltaic system into the grid is always regarded as an entrepreneur.... This income is deducted from the pension above a certain allowance...
toxicmolotow schrieb:
Do you have children? A 15-year-old son
J
Janny19832 Mar 2017 18:44ehaefner schrieb:
1. For the exemption limit included in § 14a BeamtVG, income must also be considered that does not arise from gainful economic activities significantly involving the retired civil servant's labor.
2. Income from operating a photovoltaic system is considered business income according to § 53 (7) BeamtVG.
In civil servant law, you are always regarded as an entrepreneur if you feed electricity from a photovoltaic system into the grid.... This income is deducted from the pension if it exceeds a tax-free allowance...Okay, I didn’t know that before. But this only really matters when you’re retired, right… or am I misunderstanding this?
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