Construction without solar thermal, photovoltaics, heat pumps; renewable energy?

Hello,

Builders who are in the process of building or planning tell me, ultimately you have to do something from the above (of course according to the planning).

A typical example of acquired, heard half- or no-knowledge.
The use of renewable energies is indeed desired (EEWG), in some cases also actually sensible and economical, but not mandatory. Even the pure energy saving ordinance requirements do not have to be met in every case => §25 Energy Saving Ordinance.

...A house builder told me that the requirements of the legislator are also met with an appropriate building envelope, that is with the U-value.

That is correct! The 15% rule of the EEWG (§7,§9, Annex VI). Means the building envelope must be demonstrably insulated 15% better than the energy saving ordinance requires for this building.

Regards.

That is correct! The 15% rule of the EEWG (§7,§9, Annex VI). It means that the building envelope must be demonstrably insulated 15% better than required by the Energy Saving Ordinance for this building.

Hello Euro

how exactly is that to be understood if I want to build Kfw70?
From the Energy Saving Ordinance 2009 values, I calculate my values to comply with KFW70 and then from the KFW70 values again 15% less?

Or do I calculate from the Energy Saving Ordinance 2009 values my KFW70 and then again from the Energy Saving Ordinance 2009 values my 15%?

Because in the Renewable Energy Heat Act it says that for the 15% regulation
"the respective requirements to be met for the thermal insulation of the building envelope according to the Energy Saving Ordinance in the version applicable at the time must be undercut by at least 15 percent."

For me, that means that I base the values on the Energy Saving Ordinance 2009, regardless of whether I also meet KFW70, Kfw55 or anything else?!?

Regards
Micha :cool:

! The 15% rule of the EEWG (§7,§9, Annex VI). Means the building envelope must be demonstrably insulated 15% better than the Energy Saving Ordinance requires for this building.

v.g.

That's exactly what I heard too, thanks for the info.
When we go into the concrete planning with the architect,
the facts will then be on the table.

Well yes, of course that is second-hand knowledge, but I am not
from the industry.

Therefore thanks again to everyone here in the forum,
I have already "taken away" a lot of interesting things.

Hello,

....For me, this means that I base the values on the 2009 Energy Saving Ordinance, regardless of whether I also meet KFW70, KFW55, or something else?!?

Correct. The 15% rule refers to the Ht' value (Energy Saving Ordinance). The increased KFW requirements refer to the Qp'' value, which of course includes the Ht' improved according to the 15% rule.

Best regards

....Night yes, of course that is read-off half-knowledge, but I am not from the industry.

My remark referred to those who gave you information! Especially on the Internet (forums), one should always question the expertise of the "advisor" before possibly implementing these pieces of advice.

Regards

Hi, I also have a question about this topic. We were offered a plot of land with a newly to be built single-family house. The price and location of the property are great for us, but when looking at the overview of the individual services, I quickly noticed that there is neither a heat pump nor any form of solar, air, or anything else. It’s a normal Junkers condensing boiler with underfloor heating downstairs and 4 radiators in the attic. According to the seller, that is not necessarily required. The house has a building permit, which is about half a year old. It seems suspicious to me, or are my construction concerns justified that something is wrong with it?

Regards

PS, whoever finds spelling mistakes may keep them