Heat pump with photovoltaics vs gas and solar thermal

For me, the big question is always when I need heat (winter), then the sun shines too little (electricity from the supplier). In summer, the sun burns but I don’t need heating.

My solution is a gas condensing boiler + solar thermal + masonry stove with water jacket + photovoltaic (30KW). In summer, the hot water is heated by solar. In the transitional period and winter, stove + gas. Photovoltaic self-consumption + feed-in.

Concrete example for the photovoltaic system yield 2015 from Jan, Feb, Oct, Nov, Dec -> 4400kW. In April, the system produced 4600kW!!!! In the entire winter (5 months), as much electricity comes down as in April.... And you want to heat with that.....

That shows how twisted this whole story is. And storing the energy that is left over in summer is not sensible. That’s why I would ALWAYS use solar thermal whether gas or heat pump. Controlled residential ventilation is mandatory for me anyway (with the now airtight houses).

Sorry, but in my opinion, a gas condensing boiler and photovoltaics are not sensible, and the additional costs for a stove with a water jacket never pay off unless you get the wood for free.

If photovoltaics, then only in combination with a heat pump or a huge self-consumption due to high electricity consumers in the home, or not?

That's why I would ALWAYS use solar thermal, whether gas or heat pump. Controlled residential ventilation is mandatory for me anyway (with today's increasingly airtight houses).

But it only really benefits you on good winter days, and in summer, unlike photovoltaics, it actually provides almost nothing. With photovoltaics, at least you can sell the electricity or power devices other than the heat pump; in my opinion, the solar thermal system is "useless" on the roof for about three quarters of the year.

Photovoltaics and air conditioning are wonderful, photovoltaics and pool heating are wonderful, photovoltaics and electrical appliances are wonderful.

Solar thermal is only useful for hot water. Not suitable for anything else either.

You always have the winter problem. Regardless of whether photovoltaics or ST. Only fossil fuels or the supplier can help there.

My photovoltaic system generates a return of about 9%, I think that's definitely worthwhile. At least better than 0.5% from the bank.

I have the stove because of the ambiance. That cannot be justified economically. The additional cost for the water jacket was €1,500, so why shouldn't I combine it. Especially for the transitional period, it's practical when you can use it to supply the buffer tank.

The buffer tanks are there anyway because of the solar system...

A heat pump is not for me because I won't recover the additional investment costs in 30 years and rising electricity prices would affect me since when I heat, the photovoltaic system generates too little, so I have to buy electricity....

My photovoltaic system generates a return of about 9%, I think that is definitely worthwhile. At least better than 0.5% from the bank.

I have the stove because of the ambiance. That cannot be justified economically. The additional cost for the water jacket was €1,500, so why shouldn’t I combine it. Especially for the transitional period, it’s practical if you can use it to operate the buffer tank.

The buffer tanks are there anyway because of the solar system...

A heat pump is not for me because I won’t recoup the additional investment costs in 30 years and rising electricity prices would affect me because when I heat, the photovoltaic system generates too little, so I have to buy electricity...

Well, for the price of your water jacket (excluding everything else) I can heat and provide hot water with my heat pump for 5 years (completely!). And the water jacket hardly brings anything over the year; you really have to use the stove a lot and get the wood for free (and if you pay for the wood... then I’m definitely heating cheaper with the heat pump – wood is also getting more expensive at the moment).
If electricity prices rise, you can certainly sell the produced electricity for a higher price.