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Sunbeam NewPower

02 · Market

Rooftop solar slows as storage demand grows

German rooftop PV additions fell in Q1 2026, while new storage capacity reached a record. Storage and energy management offer scope for expansion.

−21%Residential PV additions · Q1 2026 year on year
−33%Commercial rooftop PV · Same period
+67%New storage capacity · Over 2 GWh added in Q1
28GWhInstalled storage in Germany · Around 2.5 million systems

Our view

Storage, maintenance and dispatchable capacity

We plan to build on our existing equipment and engineering capabilities to expand storage, maintenance and dispatchable energy services.

Sources: BSW-Solar, PV data 29 Apr 2026 and storage release 3 May 2026.

Market · The grid

Grid access sets the timetable for every site

Germany's National Data Centre Strategy targets at least a doubling of capacity by 2030 against the 2025 baseline. Grid capacity is the limiting factor.

> 3.5 MVA

Regional example · Düsseldorf grid

No immediately allocable capacity above this threshold in 2026. Smaller connections also require site checks.

Import ≠ export

Limits of existing PV connections

Westnetz assesses import and export separately. They cannot be interchanged.

2–10 MW

Our development approach

Site by site. Prioritise viable grid access, land rights and tenant demand.

Sources: BMDS Data Centre Strategy, Netz Düsseldorf, Westnetz.

Develop · Own · Operate

Questions about the market or sites?

We are happy to share our view in person.

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