BESS-Market
Free · no sign-up · battery storage in Germany

Check your storage site.Run the numbers.

BESS-Market shows within minutes whether a site fits the grid, how much competition there is and whether the battery pays off — with real data from the market master data register, OpenStreetMap and the power market. If you want to build, we connect you with suitable partners.

  • 4.4 GW operating
  • 11.6 GW planned
  • Power prices updated daily

Sources: Marktstammdatenregister, regelleistung.net, Energy-Charts, OpenStreetMap

For utilities & project developers:free workspace with deal board, cockpit, pipeline and board report
Grid & Infrastructure MapLive data
Loading map …
380 kV220 kVStorage operatingplannedOpen map →

New for members · free

Deal board: project rights and capital — anonymous, with NDA.

Sell or buy project rights, seek or offer development capital, find partners. Your listing appears without company name or exact location. Contact details are exchanged only after the other side has accepted a confidentiality agreement and you agree.

Businesses only · sign up with a company email · every listing is reviewed before publication

  1. 1

    List anonymously

    State, MW, phase, ticket — no company name.

  2. 2

    Reviewed before publishing

    BESS-Market reviews every listing; evidenced milestones get a tick.

  3. 3

    Interest only with NDA

    Interested parties accept a confidentiality agreement first.

  4. 4

    You decide

    Contact details are shown only after your approval.

Grid deadlinesBayernwerk Netz · E.DIS Netz · SH Netz: Application portal opens, window starts · 12 Oct (in 15 days)Netze BW: First application period opens · 01 Nov (in 35 days)Bayernwerk Netz · E.DIS Netz · SH Netz: Window closes (documents + deposit) · 23 Nov (in 57 days)Points check & calendar →
How BESS-Market works

From site to project — in three steps.

Each step is a tool of its own. Start anywhere — the path always leads on to the next one.

  1. 01

    Check the site

    Grid & Infrastructure Map

    Click a spot on the map and see: nearest substation, lines, storage competition nearby, former power plant sites, the responsible grid operator and its allocation procedure.

    Indicative check priority in under 60 seconds

    Open map
  2. 02

    Run the numbers

    ROI calculator with project model

    Balancing and arbitrage revenue at current prices, plus connection contribution, grid fees, degradation and storage buildout over 20 years.

    Upside, base and downside range — the way banks calculate

    Open calculator
  3. 03

    Build it

    Project & partners

    Save site and calculation, create a site report and — if you want — get introduced to suitable integrators, EPCs, optimisers or investors.

    Free for project developers

    Start a project
Free member area

What awaits you as a member.

The tools above are free. With a free account they become workspaces: your projects, your assumptions, your decision papers — saved and recalculated with current data at any time.

For municipal utilities & regional suppliers

Utility cockpit

free

From a possible site to a robust board decision.

Example view

● Economics● Grid● Regulation○ Data

Recommendation: clarify the grid connection first

  • Check minimum requirements — Does the project meet your hurdle rate — also in the downside? With break-even for costs and revenues.
  • Four business models compared — Own investment with optimiser, with tolling, joint venture, or leasing land and connection.
  • Traffic light per dimension — Economics, grid, regulation and data kept apart — a critical grid is not hidden by a good return.
  • Pre-filled risk register — Unbundling, procurement law, MiSpeL, grid fees — suggested from your project data.
  • Board report as PDF — Five perspectives: management, supervisory board, generation, sales, financing.

For project developers

Developer pipeline

free

Develop fewer projects at risk — and the right ones faster to RTB.

Example view

Readiness 60 %

Capped: grid commitment missing

Next step: file the connection request

  • Planning-law check § 35 BauGB — Privileged status under no. 11 and no. 12 right in the site analysis — plus a map layer “search area 200 m around substations”.
  • Readiness from milestones — 27 evidenced milestones. Without grid commitment and land control no project looks more ready than it is.
  • Project value in euros — Buyer value × probability of success − remaining cost, calculated openly from your economics.
  • Next best step — Which milestone raises project value most — with guard rails such as “option instead of lease before the grid offer”.
  • Budget with stop limit — Development capital deployed against project value — so no project keeps tying up money unnoticed.

Sign in via email link, no password. Choose your role in the profile — your workspace then opens. Only your account sees your projects, calculations and risks. All assessments are indicative and do not replace legal or investment advice.

Solar PV + storage

A battery next to your solar plant?

The map shows every PV plant from 1 MW — and which ones have no battery yet. One click on the plant adds the battery to the calculation: yield at the site, recovered curtailment, solar power from negative-price hours and a shared grid connection. The Federal Network Agency’s MiSpeL determination (1 Oct 2026) allows mixed charging without stored solar power losing its EEG support — with exact metering of the quantities (usually two meters). Until the end of September 2027 only with the consent of the grid and metering operators.

  • ≈ 10,000PV plants from 1 MW in the market master data register
  • ≈ 90 %of them without a battery recorded on site
  • PVGISsolar yield per site (European Commission)
All tools

Sorted for your segment.

Mid-market 1–30 MW or large projects — the tools are ordered the way the questions arise.

See all tools
The market today

Battery storage in Germany.

Large-scale storage from 1 MW from the market master data register — updated weekly.

Go to project database

In operation

4.4 GW

7.6 GWh · 537 units

Planned

11.6 GW

34.4 GWh · 697 units

Source: Marktstammdatenregister (Bundesnetzagentur). As of 21/09/2026.

Start with your site.

One click on the map — then you know which questions your project has to answer next.