Knowledge.

Knowledge

STAND 08/2026

The subjects this company must be fluent in, written down – so no claim on this site is the only place a topic is explained.

The shelvesSix subjects, and what each holds.

EngineeringCooling, structure, control5 articles

EnergyGrid, storage, generation1 article

RegulationEnEfG §11 and §12, KRITIS, NIS23 articles

MarketDemand, pricing, capacity in Europe3 articles

Project logDated milestones, both sites

Engineering archiveTwo engineering notebooks

Written so farEvery article is owed to a claim.

Filed into the shelves above. Each article exists because a claim on this site relies on the topic – the article is where it can be checked at full length.

Regulation

The Energy Efficiency Act, explained

PUE caps, waste-heat quotas and their deadlines – what German law actually requires of a data centre, and from when.

Read

Regulation

What sovereign compute means

Jurisdiction, ownership, and the difference between a region on a cloud map and a building with an address.

Read

Engineering

Waste heat is a product

Every kilowatt-hour of compute becomes heat. Where it can go, what it displaces, and what a town gains from it.

Read

Market

Germany's data centre strategy, read closely

The state has said what it wants from data centres. Set against each priority, what a site can actually offer – and what it cannot.

Read

Market

InvestAI, and what a gigafactory needs underneath it

Europe has committed money to AI capacity. The constraint was never the money, and the shortlist of sites that can take it is short.

Read

Regulation

KRITIS and NIS2, without the certificates

What German critical-infrastructure law and the European directive actually oblige an operator to do, and why nobody here is certified.

Read

Engineering

Why AI racks need liquid

Air stops working somewhere around thirty kilowatts in a rack. What replaces it, and what it does to the building.

Read

Engineering

Storing heat in the ground

An aquifer holds warmth from summer into winter. What that asks of the geology, the water law, and the plant room.

Read

Engineering

Five hundred years of Harz water

The mines here were drained and driven by an engineered water system that still runs. We are proposing to use its descendant.

Read

Energy

What a battery earns in Germany

Storage is not one business. Four revenues stack on the same cells, and which of them you chase changes the connection you apply for.

Read

Engineering

The stack, layer by layer

Eight layers between an application and the ground it runs on. Which three we leave to tenants, which five we build, and why the drawing is a pyramid.

Read

Market

Why Europe needs its own floor

Europe plans to triple its data centre capacity by 2030. Its own forecast says that is what it takes to stop being short. What the target measures, what it leaves out, and where a German site fits.

Read

Project logWhat happened, and when.

Milestones, dated. An entry appears here once it is done.

Stand: 08/2026

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Engineering updates only. Not a newsletter, and no other mail.

05.08.2026Black Vault Blankenburg GmbH foundedNotarial founding. The site now has its own company, as every project does.

22.06.2026Strategic partner meeting, BlankenburgTown, grid operator and engineering at one table.

04/2026Letter of intent signed with the town of BlankenburgThe exact day is not published; the month is.

03/2026Grid connection request filed with Avacon110 kV, 60 MW. Filed 03/2026. The decision is a separate entry.

Engineering archiveTwo engineering notebooks.

Five centuries apart, the same sequence. Look, draw, measure, build. The tools changed and the order did not.

The modern column has one step more. Simulation is the only genuinely new instrument on this page, and it sits where it belongs: after the drawing, before the ground is touched.

c. 1500

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