Bulgarian roots · Regional reach

Building and operating income-generating real assets across Central and Eastern Europe.

X500 is a privately held investment group domiciled in Bulgaria. We acquire, develop and operate commercial real estate, renewable energy, battery storage and digital infrastructure — turning development projects into durable, yielding assets.

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15+ yrs
Leadership experience in real assets and energy
4
Countries of investment activity to date
155+ MW
Solar + BESS capacity developed
10,442 m²
GBA of our flagship Class A office asset
Who we are

A founder-led holding with an owner's mindset.

X500 was built by an entrepreneur with more than fifteen years of managerial experience in commercial and industrial real estate and renewable energy across Eastern Europe, and over a decade of independent investment activity.

In a relatively short period, the group has assembled a portfolio of yielding assets while progressing a pipeline of development projects that are systematically converted into income-producing holdings. We invest our own capital, we hold what we build, and we manage every asset as owners — not intermediaries.

The group is organised as a holding company, X500, which owns dedicated special-purpose vehicles. Each SPV holds a single asset or a coherent set of assets, providing clean governance, transparent financing and straightforward transaction structures for partners, lenders and counterparties.

Commercial real estate

Class A office and industrial property in established regional locations, held through the group's Landmark Ventures platform.

Renewable energy

Utility-scale photovoltaic plants developed, operated and — where value is optimal — divested.

Battery storage (BESS)

A 150 MW / 600 MWh standalone battery energy storage facility in operation — one of the largest in Southeast Europe.

Digital infrastructure

Data centre development positioned on the region's growing demand for computing and connectivity.

Portfolio

Yielding assets today. A disciplined pipeline for tomorrow.

Our current holdings combine stabilised, income-producing assets with selected development projects in sectors where the group has proven operating experience.

Facade of Landmark Centre Varna, a Class A office building
Income-producing

Landmark Centre Varna

The only Class A office building in the central administrative area of Varna — steps from the Municipality and the Sea Garden, ten minutes from the international airport. Owned by an SPV, part of the group's Landmark Ventures real estate platform, the building offers flexible, modern office space with underground parking, let to established multinational tenants in finance, technology, aviation and consumer sectors.

  • Gross building area10,442 m²
  • Gross lettable area6,221 m²
  • Floors / parking7 / 72 underground
  • Completed2009
Aerial view of the operational standalone battery energy storage facility near Burgas
Income-producing

Standalone BESS, Burgas

A 150 MW / 600 MWh standalone battery energy storage facility in the Burgas region, held through an SPV — among the largest operational standalone storage assets in Southeast Europe. The plant provides four-hour storage duration and monetises Bulgaria's growing need for flexibility through energy arbitrage and grid-balancing services. Independent industry analysis ranks the facility among the four largest operating battery projects in Europe — one of the cornerstone systems turning Bulgaria into the region's “energy battery” (Capital, “Top 20 batteries already changing the power market”, July 2026).

  • Power / capacity150 MW / 600 MWh
  • StatusOperational
  • Duration4 hours
  • LocationBurgas region, Bulgaria
  • ScaleAmong Europe's 4 largest operating BESS
Ground-mounted photovoltaic plant
Income-producing

Operational PV plant, Bulgaria

A 3.7 MWp ground-mounted photovoltaic plant in Razlog, southwestern Bulgaria, selling electricity on market terms. The project was developed in-house and phased into operation to capture favourable component costs and strong peak power prices.

  • Capacity3.7 MWp
  • StatusOperational
  • OfftakeMerchant (market terms)
  • LocationRazlog, Bulgaria
Illustration of a modern data centre corridor with server racks
Development pipeline

Data centre project

A data centre development addressing the region's accelerating demand for computing capacity and connectivity — a market validated by the entry of global operators into Bulgaria. The project is held through a dedicated SPV within the group.

  • Asset classDigital infrastructure
  • StatusProject stage
  • StructureDedicated SPV
Track record

Developed. Operated. Successfully exited.

The group's credibility rests on completed projects — assets taken from greenfield through construction to operation, and divested when the value case was right.

2019 — POLAND

Three PV plants developed and sold

Ground-mounted photovoltaic projects at Osiemborów (1.0 MWp) and Kosuty (2 × 0.5 MWp) were developed to completion and successfully divested — an early demonstration of the group's ability to execute cross-border.

2019 — NORTH MACEDONIA

1.0 MWp PV plant built, expanded and exited

A 1.0 MWp plant in the Strumica region was completed at the end of 2019 and subsequently expanded by 50%. The project was later sold, completing the group's second international develop-and-exit cycle.

BULGARIA

3.7 MWp merchant PV plant brought into operation

Developed in phases in Razlog and retained in the portfolio as a yielding asset selling power at market terms.

BULGARIA

Landmark Centre Varna acquired

The acquisition of Varna's central-district Class A office building anchored the group's income-producing real estate portfolio with a stabilised, multi-tenant asset.

BULGARIA

150 MW / 600 MWh standalone BESS brought into operation

The Burgas facility took the group from megawatt-scale solar into utility-scale storage — a step-change in scale that positions X500 at the centre of the region's flexibility market. Independent rankings place it among the four largest operating battery projects in Europe (Capital, July 2026).

Financing & partnerships

Backed by the region's leading lenders.

Institutional trust is earned transaction by transaction. Over the past ten years the group has raised more than EUR 100 million of debt financing for its projects — each facility independently scrutinised, structured and endorsed by established regional banks.

€100m+
Debt financing raised across the group's projects over the last 10 years
Cumulative, 2016–2026
OTP Group
(DSK Bank)
One of Central and Eastern Europe's largest banking groups; senior lender to the group's utility-scale storage investment
Financing partner
Allianz Bank Bulgaria
Part of the global Allianz Group; long-standing lender to the group's real estate and energy projects
Financing partner
BACB
The Bulgarian-American Credit Bank, a specialist in project and asset-backed lending in Bulgaria
Financing partner

Bulgarian TSO

The group's storage and generation assets work alongside the national Electricity System Operator, contributing to the balancing and stability of the grid.

Regional energy traders

Offtake and optimisation arrangements with major energy trading houses active across the Southeast European power markets.

Multinational clients

International corporates are tenants of the group's real estate and counterparties to its services — relationships built on delivery, not promises.

Market perspective

Positioned in markets with structural tailwinds.

Central and Eastern Europe is rebuilding its power system in real time: renewables are scaling fast, coal is retiring, electricity demand from industry and data centres is rising, and the resulting price volatility is creating durable value for flexible assets. Our portfolio is built where these trends converge.

Bulgaria — cumulative installed solar PV capacity

Gigawatts, year-end · 2026 is an industry estimate
02.55.07.510 GW 6.0 ≈8.5 202120222023202420252026e
Sources: Bulgarian solar industry data via pv magazine (Feb 2026); 2023–24 and 2026 values approximate/estimated. For illustration only.
14.7 GWh
Operating battery storage in Bulgaria as of June 2026 (4.8 GW of power) — with BESS Burgas among its four cornerstone ~600 MWh systems
Capital, July 2026
Top 3
Bulgaria ranks among Europe's most attractive markets for co-located solar-plus-storage returns
Aurora Energy Research, 2026
4.2%
Class A & B office vacancy in Varna, down from 10.6% at end-2024 — among the tightest regional markets
Colliers via BTA, Q1 2026
Rising
Regional data-centre demand, underscored by global operators entering the Bulgarian market in 2026
Industry announcements, 2026
Central & Eastern Europe

A region re-powering itself

CEE is undergoing one of Europe's fastest energy transitions. Legacy coal capacity is retiring, interconnection is deepening, and renewables' share of generation is climbing steeply — widening intraday price spreads and rewarding owners of flexible, dispatchable and well-located assets. The group's develop-own-operate model is designed for exactly this environment.

Poland Immediate expansion focus

Scale and a storage boom

The region's largest power market has built over 20 GW of solar and 10 GW of onshore wind, with grid plans pointing to more than 40 GW of PV over the next decade. Capacity-market auctions have already contracted some 9.5 GW of energy storage — evidence of the structural demand for flexibility that X500's storage expertise addresses. Poland — where the group has already developed and exited — is a market of immediate interest for our next ventures.

Installed solar≈20.7 GW (end-2024)
Storage contracted≈9.5 GW (capacity auctions)
Romania Immediate expansion focus

The next growth market

Romania added 2.2 GW of solar in 2025, lifting cumulative capacity above 7 GW, and awarded 4.2 GW of renewables under its first two CfD auctions — beating targets. With a 10 GW solar goal for 2030 and utility-scale build-out nearly doubling year on year, Romania is a market of immediate interest for the group's next ventures.

Solar added in 20252.2 GW
CfD capacity awarded4.2 GW (2025)
How we invest

Discipline first. Yield always.

Own the full cycle

We originate, permit, build, operate and — when it maximises value — divest. Controlling every stage protects returns and keeps accountability in one place.

Structure for clarity

One asset, one SPV. Clean corporate structures make our holdings transparent to lenders, partners and regulators, and keep risks ring-fenced.

Invest where we operate

We commit capital only in sectors and geographies where the group has hands-on operating experience — Bulgaria first, the wider region by design.

Contact

Let's discuss the next opportunity.

We welcome enquiries from institutional partners, lenders, tenants and counterparties interested in our assets or in co-investment across the region.

Company
X500 EOOD
Registered in
Sofia, Bulgaria
Email
x500office@gmail.com