There is always a battle between saving some cash and making things more strong.
So when you built your warehouse or roofed parking lot, you probably had to take a lot of decisions that affected your establishment for the long term - cost wise and functionality wise.
A stronger roof structure or a light frame?
If a lightweight roof got approved by the construction engineers, you probably went with it. But in the current context of the very lucrative rooftop solar farms installations - the roof type dictates what solar mounting system you can use for your green energy site.
Topic solar mounting system
Since renewable energy is achieving more ground lately, one of the issues that appears is storing it.
Fossil fuels themselves are a form of stored energy so the only thing we need to do is extract them. Once we have them, storing it's not a problem.
Green energy on the other hand is different and most of the time it isn't stored. It's delivered right into the grid for immediate consumption.
But if you want to build a true energy independent household (or city) you have to store your renewable energy. And how do you do that?
Right click and open in new tab for full resolution view
If you want to build your own solar panel, consider the solar cells as being batteries, stacked on top of each other.
But of course, you cannot stack the cells. Doing that means only the first cell will get sunlight, thus the others won't produce electricity.
Yeah, photovoltaic panels can power your off-the-grid home. But they're not limited to that.
You can now carry a small and light a portable solar panel to charge your gadgets (iPhone, iPod, trekking GPS, camera, etc.) while on the go.
Green Energy Feed-In Tariff Explained and The Secret of Germany's Renewable Energy Success Story - Video
The secret to Germany's green energy success story lies in the Renewable Energy Act (2004) and the feed in tariff.
So what's with these tariffs?
They provide fixed prices determined by public authorities for a certain period, mostly 20 years, which is to be paid per kilo-watt-hour by electricity companies to producers of green electricity. (Source)
This means that if your solar site or wind farm produces energy that's fed into the national electricity grid, you are entitled to receive a certain price from the utility company which actually buys your energy and resells it to consumers.
Is there going to be a solar market in Europe, now that Germany plans to cut subsidies for solar plants?
Looking at the charts below, we can come up with a short answer for the long term and that's yes. (pun intended)
Topic solar energy