Solar Installation: Cost Calculation for 230V, 2000W Heater in Boiler - Photovoltaic Set Guide

I warmly welcome,

Could someone tell me what would be the cost of a photovoltaic set to power a 230V heater some 2000W in a boiler.

I mean only powering the above heater.

I don't know how to calculate it

Many thanks in advance for your reply.

And some heater controller something these matters, because you probably do not want smoking connect directly to the heater?

I don't know how to do it best.

I just want hot water in the summer without smoking in the oven

The CO boiler has an additional 230V heater installed.

I will be grateful for all hints.

picus113 wrote:

Could someone tell me what would be the cost of a photovoltaic set to power a 230V heater some 2000W in a boiler.

I mean only powering the above heater.

I don't know how to calculate it

First of all, you count the cost of the panels, because it will come out the most expensive. On alledrogo you can find, for example, used PV panels several years old at a price of 1.5 PLN / W - which gives a cost of 3000 PLN for a 2 kW installation. If you wanted new panels, it would probably come out a lot more expensive. Plus some panel regulator (connecting the panels to the heater "rigidly" is not a good idea - you will lose too much energy due to a mismatch) probably a few stacks will also come out. Additionally, general cargo - cables, fasteners, screws, other small items - also accumulates a little penny. In total, I think that a few thousand must be spent on such a thing.

Although I would count first, are the PV panels really calculating? What is your DHW consumption? How many people use it? Because from what I know, DHW heating with panels is calculated only when consumed by 1-2 people. With greater demand, solar panels or solar panels come out better. Although those for the summer season can also be done easily at home ...

Only 2 people use CWU,

And what do you mean that you can make solar panels at home ???

picus113 wrote:

And what do you mean that you can make solar panels at home ???

If the heating of DHW is limited only to the summer season, you can build solar panels from generally available materials, such as:
https://www.elektroda.pl/rtvforum/topic1412442.html
There are quite a few topics of this type even on an electrode. People brag that it works for them ...

Added after 3 [minutes]:

picus113 wrote:

Only 2 people use CWU,

Although in your case PV can pay off. On the other hand, the CWU heating system based on PV panels is simpler in construction and easier to use than conventional solar panels.

picus113 wrote:

Only 2 people use CWU,

And what do you mean that you can make solar panels at home ???

It's like taking a few old radiators, painting them black so that they better absorb the sun's rays, connecting them all with pipes and exposing them to the sun. Of course, you would have to fill them with water, which the sun will heat and you will consume.
Of course, this is the principle of operation, such a shortcut.

In this topic, I described the installation I have at home;
https://www.elektroda.pl/rtvforum/topic3317504.html
The cost of installing 2kW for heating hot water on used polycrystalline or monocrystalline panels, dedicated under the frame and MPPT controller, at current prices on the Internet about 5000 PLN.

Hello The whole installation used panels 8 pcs frame wire driver brizo plus heater 3800 PLN.

The price depends largely on the panels you buy (what power) ...
If you want to get into it, think about better panels to later extend them with similar power ...
And believe me it's addicting I started with 2kW and now I have 9kW ...

picus113 wrote:

to power a 230V heater with some 2000W in the boiler.

Do not be so greedy to power (top up) the 2000 W heater may be less power.
I suggest a hybrid: solar farm + wind farm because sometimes when there is no sun (at night and in winter) a strong wind blows and vice versa.
There is no need to adjust because the set thermostat in the boiler will turn off the main power supply from the network and in the first place will operate renewable energy - free.