§ 14a EnWG

What it covers, and what it does not

It applies to controllable consumption devices behind a connection: heat pumps, charging points for electric vehicles, space cooling and electricity storage, each above a defined connected capacity. Facing overload the grid operator may temporarily reduce their draw, not switch them off: a minimum draw stays available in every case.

Export is not covered. Curtailing generation in a network situation is a different process with its own legal basis and its own compensation. The two get conflated in project packs, producing models that book a revenue loss in the wrong place.

What the connected party gets

Participation reduces the network charges of the metering point concerned. The design is selectable: a flat annual reduction, a percentage reduction of the energy component, or a time-varying network charge distinguishing cheap and expensive windows. The choice is not final; it is made periodically.

The economic benefit is small against the electricity price. The real value sits elsewhere: participation shortens the road to a connection, because a controllable device is easier to accommodate in the network than an uncontrolled one of the same size.

What it means for a site with solar

On a commercial property both sides meet: the installation exports while chargers and heat pump draw. A battery joining the two is itself a controllable consumption device as soon as it charges from the grid, and belongs treated as one in the design.

In practice that means configuring control inside the building so that an external reduction does not hit the installation's own consumption. Where charging infrastructure is supplied primarily from on-site generation anyway, being dimmed during congestion costs little, because it touches draw and not generation.

For site assessment § 14a is rarely a revenue line but often a schedule line. Where a connection upgrade for charging or heat is pending, controllability is part of what decides how fast and at what capacity the grid operator commits.

In the model the effects belong apart: the reduction in network charges acts on the site's cost of drawing power, not on the installation's revenue. Carrying both in one line blurs exactly the boundary along which responsibility later runs between owner and plant operator.

And that responsibility belongs named in the contract. On a leased roof the owner decides the consumption side and the plant operator the generation side; who registers which metering point, which charging module is elected and who runs the control equipment is a question for the lease, not for the engineering.