In section 5.1, however, it only says "40plus" without the additions EE and NH. From this, I would now deduce that there is no 40plus EE...
40+ must meet the EE standard anyway. It says so in the technical minimum requirements of the BEG on page 2 (link is below): "An Efficiency House 40 Plus must also meet the requirements of the EE package." Therefore, I don't think that in addition to the 25% for 40+ there are an extra 2.5%. To achieve 40+, you anyway need 55% use of renewable energy for heating demand.
Therefore, I don't believe that there are an additional 2.5% on top of the 25% for 40+. To achieve 40+ you already need 55% use of renewable energy for the heating demand.
Yes...I think so too.
Is there any difference now between 40 EE and 40+? I know that a battery was/is necessary for 40+. Is that still the case? Where can I find this information?
The difference between 40+ and 40EE is not yet defined because the new subsidy is not finally clear. I could imagine that, for example, there will be a gradation based on the size of the photovoltaic system and battery. But realistically speaking, 40EE is probably unnecessary. Anyone building KfW40 also has the money for a photovoltaic system. It is worthwhile anyway for self-consumption; feeding electricity into the grid only amortizes the fixed costs. And then the battery is also subsidized for 6000€ (or potentially more).
On the page of [bmwi] there is a PDF with the technical minimum requirements. It states what the [EE-Paket] and what the [Plus-Paket] must have. For the [EE-Paket] you need 55% energy from renewable sources (solar thermal energy, heat pump with photovoltaic system, geothermal energy, biomass combustion, district heating, ...). For the [Plus-Paket] additionally photovoltaic system, storage, ventilation system with heat recovery.