30 Dec 2012 11:28 AM:

 thanks for the kind words.

Drop by next time you are here.

Thread: Selling surplus solar electric in Spain ?

--------------------------------------

30 Dec 2012 9:46 AM:

 Hi

no, I'm grid connected so the solar supports usage.  6 - 700Watt from solar and rest from grid.

It covers the base loads during daylight - motors starting is always a problem - thus grid connect solves this.

Slowly there is some interesting excess management evolving - switching remote sockets etc - 

I'm near Monforte / Orense check for lifeingalicia on the net we also rent out a house here......

So long

PS. If you really wanted to you could switch the heating element in a dryer or connect it differently or use a transformer for it thus running it at 50% or buy one with a low heat setting (1250W) but it would take longer....

 

Thread: Selling surplus solar electric in Spain ?

--------------------------------------

29 Dec 2012 1:27 PM:

 Hi

so far the "net balance" part of legislation remains in the drawer (no money in it for the government).

What is law is "autoconsumo". Thus you can install up to your conected power (e.g. 4800Watt / 25A) panels and converters (must adheare to regulations e.g. switch off when the power fails)  and simply plug this into your sockets.

You use what is produced and any excess is a gift to the grid.

I have 760Watt installed and will install another 1Kw shortly. The present install covers my base load and we use dryers and washingmashine when the sun shines. With the latest micro-converters it is simple, safe and versatile as one can install one or more panels wherever there is an ideal place  and add whenever one wants.

So far I have absorbed the rises in energy prices and actually slightly lowered my average usage.

In future any excess I produce will be switched intelligently to the bathrooms underfloor warming and potentially I may install a small heatpump based air con and I can pump more water into our extensive gardens.

If one factors in all taxes like IVA and the 5% energy tax standing charges etc. one looks at about 20 Eurocent per Kw/h (4.8Kw connect and 4800Kw/h year usage).

So at about 2€ per installed watt (solar) I get a payback of about 7 years, better if prices keep climbing.

(1Kw/p eff:~ 70% ~6 h/day at 360 days ~0.20€ kwh =~ 300€ / year = payback ~7 years)

Spains electricity has risen 65% in the last 5 years.......

I'll keep adding panels....... 

Thread: Selling surplus solar electric in Spain ?

--------------------------------------

29 Dec 2012 12:30 PM:

 Hi,

if you have less than 10KW petential connected you go to the "last resort" price, fixed by the government.

Beware all those are without VAT (IVA) at 21 % and the 5% energy tax....

So having a 4,8Kw connection (25Amps) and using 4800Kw/h a year your price per Kw/h is about 20 Eurocent.

14,2 cent plus IIVA =17.2 plus tax plus standing charge based on 4800Kw/k  a year it is ~ 0.20 € /Kw/h

So it is not cheap. There is only one way and it is up. All incentives have been stopped and net balance bill is still in the drawer. 

Término de potencia:

TPU = 21,893189 euros/kW y año.

Término de energía: TEU.

• Modalidad sin discriminación horaria:

  TEU0= 0,142208 euros/kWh.

Thread: Electricity in Spain, does anyone understand it?

--------------------------------------