4 ms·

how are people who have rooftop solar in the EU facing the electricity crunch against people who don't have that?

perlgeek 4y ago
In general, higher electricity prices mean that rooftop solar amortizes faster, since you save more per kWh that you don't have to purchase from the supplier. Rates for feed electricity into the grid vary widely within the EU, for example in Germany it's around 6-7ct/kWh for home rooftop solar, in Belgium it depends on the energy company, but goes up to 40ct.
- 2Gkashmiri 4y ago
  you can use that in home without selling to the grid, can't you?
  - perlgeek 4y ago
    You basically have these options: * connect your solar to the grid, sell off the excess (default for larger installations) * connect your solar to the grid, donate the excess to the grid (easier from the paperwork perspective, doable for very small installations) * have an "island" installation that's not connected to the main grid, move some devices to that island (you need two separate circuits, need to manage which device to put on which circuit) * go fully island / off-grid (you only need one circuit, but need battery and enough power generation to go through the winter all by yourself) The first two are definitively easier, the latter two only for real tinkerers / enthusiasts. So unless you count the latter two, the alternative to selling to the grid is donating the excess to the grid.
    - reportingsjr 4y ago
      This seems to big missing a major option: * Connect your solar to the grid, but also to a local battery. Charge the battery with excess solar until battery is full, then sell/donate excess. This has really started to become a viable option with solar panel prices being so low and battery prices (particularly lithium iron phosphate) dropping significantly in the last few years. Unless this isn't a legal method anywhere in the EU, but I highly doubt that.
      - bbu 4y ago
        The additional cost for the battery etc. makes this a less desirable solution. Meaning you won’t make up the money you invest.
    - dzhiurgis 4y ago
      Up here in Lithuania we “store” excess power in grid and then pay a little for transmission when getting it back. Dunno exactly, but selling might be better since power is cheaper at night (but given current events - more expensive in winter).
    - 2Gkashmiri 4y ago
      https://www.phocos.com/product/psw-h-hybrid-inverter-charger/ https://www.phocos.com/product/psw-h-hybrid-inverter-charger... i own this solar inverter and i get to use on-grid mode when the grid is live during the day and if grid goes dark for any reason, i cut off supply outside and use the solar for home use WITHOUT BATTERIES. Been running this at home for 2 years now, 5 KWH inverter, 5.3 (i think) panels
cinntaile 4y ago
People with rooftop solar are generally richer than those who don't have rooftop solar so they should weather the rise in prices better regardless.
- 2Gkashmiri 4y ago
  sure, someone who can afford a car should be able to afford 1-3-5 kwh panels, right? btw, do you know how much it costs for a 1kwh or a 5kwh panel + inverter?
  - perlgeek 4y ago
    A rough rule of thumb is about 1 EUR per 1W of nominal / peak power output if you buy the parts yourself and handle installation, a bit more if you pay for installation as well. This is from Germany, I hear prices differ a bit between EU countries.
  - lultimouomo 4y ago
    The question is more whether a) they can afford a roof to put those panels on, or they actually live in a flat (most people in the EU) or rent it out and b) they can afford a car AND the panels, if the car is more or less a necessity for their daily lives, which is often is (not always, I think cars are overused even in Europe)
  - jvdvegt 4y ago
    I've just bought 4800kWh solar panels (12*400Wp) and a converter with installation on a flat roof for about EUR 7500.
    - 2Gkashmiri 4y ago
      wow.. after subsidies, i paid for 5120Wp panel + 5kwh inverter+installation+earthing for EUR 2222 approx 2 years ago.
brnt 4y ago
I had them installed just a year ago, and it's the main reason my bill stays under control (it'll be about double, instead of triple or quadruple).

In general, higher electricity prices mean that rooftop solar amortizes faster, since you save more per kWh that you don't have to purchase from the supplier. Rates for feed electricity into the grid vary widely within the EU, for example in Germany it's around 6-7ct/kWh for home rooftop solar, in Belgium it depends on the energy company, but goes up to 40ct.

2Gkashmiri 4y ago
you can use that in home without selling to the grid, can't you?
- perlgeek 4y ago
  You basically have these options: * connect your solar to the grid, sell off the excess (default for larger installations) * connect your solar to the grid, donate the excess to the grid (easier from the paperwork perspective, doable for very small installations) * have an "island" installation that's not connected to the main grid, move some devices to that island (you need two separate circuits, need to manage which device to put on which circuit) * go fully island / off-grid (you only need one circuit, but need battery and enough power generation to go through the winter all by yourself) The first two are definitively easier, the latter two only for real tinkerers / enthusiasts. So unless you count the latter two, the alternative to selling to the grid is donating the excess to the grid.
  - reportingsjr 4y ago
    This seems to big missing a major option: * Connect your solar to the grid, but also to a local battery. Charge the battery with excess solar until battery is full, then sell/donate excess. This has really started to become a viable option with solar panel prices being so low and battery prices (particularly lithium iron phosphate) dropping significantly in the last few years. Unless this isn't a legal method anywhere in the EU, but I highly doubt that.
    - bbu 4y ago
      The additional cost for the battery etc. makes this a less desirable solution. Meaning you won’t make up the money you invest.
  - dzhiurgis 4y ago
    Up here in Lithuania we “store” excess power in grid and then pay a little for transmission when getting it back. Dunno exactly, but selling might be better since power is cheaper at night (but given current events - more expensive in winter).
  - 2Gkashmiri 4y ago
    https://www.phocos.com/product/psw-h-hybrid-inverter-charger/ https://www.phocos.com/product/psw-h-hybrid-inverter-charger... i own this solar inverter and i get to use on-grid mode when the grid is live during the day and if grid goes dark for any reason, i cut off supply outside and use the solar for home use WITHOUT BATTERIES. Been running this at home for 2 years now, 5 KWH inverter, 5.3 (i think) panels

cinntaile 4y ago

People with rooftop solar are generally richer than those who don't have rooftop solar so they should weather the rise in prices better regardless.

2Gkashmiri 4y ago
sure, someone who can afford a car should be able to afford 1-3-5 kwh panels, right? btw, do you know how much it costs for a 1kwh or a 5kwh panel + inverter?
- perlgeek 4y ago
  A rough rule of thumb is about 1 EUR per 1W of nominal / peak power output if you buy the parts yourself and handle installation, a bit more if you pay for installation as well. This is from Germany, I hear prices differ a bit between EU countries.
- lultimouomo 4y ago
  The question is more whether a) they can afford a roof to put those panels on, or they actually live in a flat (most people in the EU) or rent it out and b) they can afford a car AND the panels, if the car is more or less a necessity for their daily lives, which is often is (not always, I think cars are overused even in Europe)
- jvdvegt 4y ago
  I've just bought 4800kWh solar panels (12*400Wp) and a converter with installation on a flat roof for about EUR 7500.
  - 2Gkashmiri 4y ago
    wow.. after subsidies, i paid for 5120Wp panel + 5kwh inverter+installation+earthing for EUR 2222 approx 2 years ago.

brnt 4y ago

I had them installed just a year ago, and it's the main reason my bill stays under control (it'll be about double, instead of triple or quadruple).