Hello Perlenmann
The good thing is, you can calculate everything to your liking.
Yes, you can, if you want – or you calculate everything badly – that’s just as possible.
*Irony on* The state has never changed anything that has a 20-year validity! *Irony off*
True, you’re right there, it *could* do that. However, the probability with the Renewable Energy Act is extremely low. Because the state has no costs in this case. It’s not the state that pays the feed-in tariff but the utility company. (And with that the electricity consumers.) Since you hang around in this forum, I assume you are building a house, want to build one, or have just built one.
If I now think about what changes the state has initiated for homeowners in the last 10 years that can sometimes cost a lot of money, then everyone should rather build 100 photovoltaic systems than 1 house!
Do you actually already have a system?
You know you have to pay tax on income from it, right?
That next year there will be (I believe) 4 cents less is also clear?
Since I also hang around in this forum, it can be assumed that I am in the process of building a roof area for a photovoltaic system. Coincidentally, the space under the photovoltaic system can also be used for living, but that’s really just a coincidence.
And when the roof is finished, I will do exactly that calculation for my roof – taking into account the orientation and tilt, the current system price, and the feed-in tariff. If then a reasonable return comes out, I will definitely install a system.
I think everyone really has to decide that for themselves, but to bring in a "celebrity"... Daniel Küblböck apparently invested all his money there and had great success with it. But that was a few years ago and he had the money in cash.
True, I had already written that – everyone has to decide for themselves. And not only some C-list wannabe celebrities invest in such systems.
As I already wrote, the last two years (2009 + 2010) were record years. Prices fell extremely with a high (too high) feed-in tariff. Returns of 10-12% were the rule, not the exception. Therefore, the government luckily intervened and reduced the tariff. In 2012 it will only be 24.43 cents. That means the tariff was reduced by 43.2% from 2009 to 2012.
Meanwhile, there is a "dynamic cap," meaning the tariff decreases depending on newly installed capacity. The state wants an annual expansion of 3 GW. If the expansion is in this order of magnitude, the tariff is cut by 9%, if it’s below, the cut is less, if it’s above, it can be cut by up to 15%. For comparison: expansion in 2010: 7.4 GW (= 7,400 MW = 7,400,000 kW); 2009: 9.8 GW (= 9,800 MW = 9,800,000 kW); estimate for 2011: 2.8 GW. (All numbers only for Germany and not worldwide! And all numbers without guarantee.)
So don’t tell me no photovoltaic systems are being built *g*
But the 3,x% return has also not taken into account the elimination of the main annuity repayment, right?
??? I don’t understand now...
I am neither a banker, nor a tax advisor, nor a business economist – I have calculated this to the best of my knowledge and belief *exemplarily* – if you find another mistake, you can gladly keep it.
The system might also run for 30 years, but the yield doesn’t disappear all at once but steadily. The fact that temperature increases in the form of heat (solar radiation) happens may even have a positive effect, but storms might tear the system off the roof. Additionally, the photovoltaic must also still be insured. (Don’t know the costs)
Whether a storm damages the system depends solely on the quality of the installation. If you look for a cheap provider who has no idea about tensile and compressive loads and for whom statics is just something to eat, well, then your system will fly off the roof in the next storm. If it is installed properly, it will withstand even a Kyrill.
Anyway, for me it’s not worth the risk. The best credit is the one you don’t have!
And I would rather take 4.5 fixed for 5 years than a possible 3,x for 20 years.
As already mentioned several times – everyone has to decide that for themselves. There is no universally valid “right” or “wrong.”
But therefore, photovoltaic cannot be generally designated as wrong or nonsense. You just have to look carefully here, too.
PS: 8KWp need about 64m² space in OPTIMAL orientation according to my knowledge!
Yes, about that (maybe even a little less). It depends on the modules used and the roof dimensions.
But the orientation has nothing to do with that – you can also put the system on a north-facing roof – but I can promise you without calculation that the system will not pay off then.
Sunny greetings
Micha