€80,000 buys you a trailer-mounted battery container, manufactured in Brașov by a Romanian manufacturer, leased to a licensed Romanian grid operator on a ten-year fixed-rent contract. ~15% gross per year, paid quarterly, in EUR. The asset stays on your EU company's balance sheet for the full term. The trailer is mobile by design, so the downside path is to relocate and re-lease, not to write down a sunk asset.
I structured this deal to be the lowest entry ticket on the desk, not because it is the simplest, but because it is the most defensible. You own the equipment. The lease is fixed and contractual. Romania pays the spread that makes the rent economic. Here is exactly how it works and where the risk actually lives.
Your EU company buys a trailer-mounted lithium-ion battery container for €80,000. The same company leases the trailer to a licensed Romanian grid operator on a ten-year fixed-rent contract. Rent of ~15% per year (gross, in EUR) lands quarterly on your company bank account. At year ten, you renew the lease, relocate the trailer to a new operator, or sell the equipment on the secondary market.
Three things make this structurally different from most real-asset deals.
First, the rent is fixed and contractual. Not a target. Not a forecast. The lease specifies the quarterly payment for the full ten years. The grid operator captures the day-night price spread and absorbs the spread risk; the investor collects rent regardless of how that spread moves.
Second, the asset is mobile. The trailer can be relocated in days, not months. If the original operator defaults or the relationship ends, the trailer is moved to a different grid site and re-leased. The mobile form factor is the downside protection.
Third, you own the equipment directly. Not through a fund. Not through a token. The trailer is on your EU company's balance sheet from delivery through year ten and beyond. The manufacturer warranty (10 to 15 years on cells) and tier-1 insurance follow the asset, not the operator.
Direct equipment ownership through an EU-domiciled company. The same structure pattern that any leasing company has used for fifty years, applied to a battery instead of a truck or a piece of factory equipment.
A trailer-mounted lithium-ion battery container, manufactured on the same production line as the two stationary 250 kW units already operating in Brașov. Standard EU-grade cells, tier-1 BMS, road-legal trailer chassis. Manufacturer provides a 10 to 15-year warranty on the cells (the longest-lived component).
Insurance is structured as a standard equipment-lease covenant: the operator is contractually required to keep the trailer insured under a tier-1 EU policy (Allianz or Generali) for full replacement value throughout the lease, with your EU company named as loss payee. The premium is paid by the operator as part of their site operating cost, not invoiced back to the investor. If the operator-tenant relationship terminates and the trailer is relocated, the policy is transferred or rewritten under the new operator on the same loss-payee structure.
Your EU-domiciled company is the buyer of record. The trailer is acquired under intra-EU reverse charge, which means zero VAT cash impact at purchase. If you already have an EU company (any member state), it can be the buyer. If not, the operator handles formation of a Romanian SRL specifically for the asset, on your name, at a cost of €500 one-off plus ~€2K to €3K per year in local accounting overhead.
A standard EU equipment lease between your company (lessor) and a licensed Romanian grid operator (lessee). Fixed quarterly rent. Ten-year term with renewal optionality at year ten. Operator covers all operational costs (site preparation, grid connection, dispatch, maintenance). Your company collects rent, holds the asset, and pays the local accountant.
For investors comparing structures, the relevant glossary terms (EU equipment leasing, intra-EU reverse charge, BMS, tier-1 insurance) are defined on the glossary.
Single-trailer entry economics, with the position scalable across multiple trailers on the same structure:
| Item | Amount | Notes |
|---|---|---|
| Entry ticket (one trailer) | €80,000 | Single wire to the manufacturer via your EU company |
| VAT | €0 cash impact | Intra-EU reverse charge |
| EU company setup (if new) | €500 to €2K one-off | Skip if you already have an EU vehicle |
| Annual company overhead | €2K to €5K / yr | Local accountant, jurisdiction filings |
| Insurance premium | paid by operator | Lease covenant: operator insures the asset; policy is in your EU company name as loss payee |
| Gross rent (lease basis) | ~15% p.a. | Fixed in the lease, paid quarterly |
| Less: company overhead | -2.5% to -6.3% | €2K to €5K on €80K ticket |
| Less: corporate tax (CIT) | -0.1% to -2% | 1-3% micro-enterprise if eligible, 16% on retained profit otherwise |
| Net at company level | ~7% to 12% p.a. | Range driven by overhead choice and CIT regime |
| Less: dividend withholding (to you) | treaty-dependent | RO standard 8% individual, treaty rates 0-15% for foreign residents |
| Net in your personal pocket | ~6.5% to 11% p.a. | If profits are distributed; reinvested capital is taxed only at CIT |
| Scalable to | €5M+ | Multiple trailers compress the overhead percentage |
The 15% headline is the contractual gross rent on the lease, before any company overhead or tax. The numbers above walk the cascade explicitly so there are no surprises in year one. Three variables shape where in the net range you land:
EU company jurisdiction. If you already have an existing EU company (Austrian GmbH, German UG, Dutch BV, Cypriot Ltd), use it. Marginal overhead is near zero, which keeps net at the top of the range. If you set up a fresh Romanian SRL specifically for the asset, that costs ~€500 to set up and ~€2K to €3K per year to run. A fresh Austrian SPV costs €8K to €15K to set up and €5K to €8K per year, which materially compresses the net at the €80K ticket level.
Tax residency of the company. Romanian micro-enterprise regime (1 to 3% turnover tax) is available if eligible (revenue under €500K and other criteria), which keeps CIT at the low end. Standard Romanian corporate tax is 16% on retained profit. Other EU jurisdictions vary from 9% (Hungary) to 25% (France).
Dividend distribution strategy. Tax only crystallises when profit distributes out of the company to you personally. If the rent is rotated into a second trailer rather than distributed, you defer the dividend WHT and compound the position at the company-level net yield instead. For a multi-trailer position scaling toward €5M+, this is the standard pattern.
FX exposure. Rent is denominated in EUR. If your home currency is something else (USD, GBP, CHF), there is FX translation risk on the quarterly distribution. For EUR-based investors, no impact. For others, the typical year-over-year FX move sits within 3 to 5% in either direction.
The free calculator takes your ticket size, your residency, and your existing EU company status, and shows what the mobile BESS would produce net of overhead and tax. No call needed.
Open the calculator →The honest answer is the same as for the solar trading SPV: this deal produces the yield it does precisely because it operates in Romania. The same trailer, the same lease structure, the same operator quality, would not produce 15% in Germany or France. Here is why.
The day-night spread is the widest in the EU. Romanian power prices swing 15 to 25% between day and night, driven by accelerating residential and commercial solar installation pushing daytime supply up, combined with limited existing storage to absorb it. The grid operator captures that spread through arbitrage and grid-services contracts. The fixed rent paid to the investor is funded by that spread. In Germany the spread is closer to 5 to 8% and the same arbitrage produces operator economics that cannot support 15% lease rents.
EU funding is targeted at this asset class. The Romanian government has earmarked €300M specifically for standalone battery energy storage systems under the EU recovery framework. That subsidy goes to operators, not to investors directly, but it lowers the operator's cost of capital and allows them to commit to fixed rents over ten-year horizons.
The pipeline is real. Listed Romanian utilities have announced 2 GW+ of battery storage in their build pipeline through 2030. That demand for new units sustains the rent rates on existing units and creates an active secondary market for trailers at year ten when the original lease matures.
The combination of these three is specifically Romanian. The deal exists where the economics allow it, not where the brand recognition would be more comfortable.
The lease cash flow is contractually flat once it starts: €3,000 per quarter, every three months, for ten years. What changes the year-one effective yield is the dead period between your wire and the first rent payment, which is real and worth modelling explicitly.
| Period | Quarterly rent | Cumulative gross | Notes |
|---|---|---|---|
| Day 0 to ~Day 180 | €0 | €0 | Dead period. Wire sent, trailer manufactured (4-6 weeks), delivered, commissioned. No rent yet. |
| ~Day 180 (first rent) | €3,000 | €3,000 | First quarterly payment lands on commissioning + ~90 days |
| End of Year 1 (calendar) | €3,000 | €6,000 to €9,000 | Calendar Year 1 effective yield: ~7.5% to 11% gross, not 15% |
| End of Year 2 (calendar) | €3,000 | €18,000 to €21,000 | First full year of four quarterly payments |
| Year 3 | €3,000 | €30,000 to €33,000 | Mid-term, asset on balance sheet |
| Year 5 | €3,000 | €54,000 to €57,000 | Operator warranty review |
| Year 10 (end of original lease) | €3,000 | ~€114,000 to €117,000 | Cumulative across the lease (10 years from commissioning, ~10.5 calendar years from your wire) |
Two things worth being explicit about. The 15% gross is the rent on a lease basis (12 months of rent ÷ €80K ticket = 15%), not a calendar-year-one effective yield. Calendar Year 1 effective is closer to 7.5 to 11% because the trailer is being built and delivered for the first ~180 days. From Year 2 onward, you receive the full four quarterly payments per calendar year and the 15% gross rate is the actual yield.
Cumulative gross rent across the full ten-year lease is roughly €117,000 against the €80,000 entry ticket. Plus residual asset value at the end. Plus optional renewal income beyond year ten, which is meaningfully lower than the original rate and worth being explicit about:
Three realistic paths at year 10, all of them at a lower rent than years 1-10 because cell capacity has degraded to 70 to 80% of original. None of them continue at the original 15% headline rate.
Cumulative rent across the original ten-year lease (~€117K) plus any of these year-10 paths produces a positive ten-year IRR even on the most conservative resale. The principal is covered by rent alone around year seven; everything after year seven is upside.
Honest framing. Each of these has happened in similar equipment-leasing structures in adjacent markets, and a ten-year horizon means an investor should plan for at least one of them to test the structure.
1. Operator counterparty failure during the lease. Contracted rent is only as good as the counterparty paying it. Mid-term operator default is the largest single risk on a ten-year lease. The mitigant is the deliberate design choice that the trailer is mobile: if the original operator stops paying, your EU company recovers the asset from the operator's site and re-leases it to a different counterparty. Operator selection at the start matters more than the contract language; the operator is licensed by the Romanian regulator and has been originating fixed-rent contracts since 2023.
2. Day-night spread compression. The 15 to 25% Romanian spread is the economic basis for the operator paying fixed rent. As more battery storage is built into the Romanian grid through 2030, the spread will likely compress. The fixed-rent contract insulates the investor from spread compression during the lease term. The risk shows up at year ten in renewal pricing: a compressed spread means lower rents on subsequent contracts.
3. Residual value at year ten. Lithium-ion cell capacity at end of warranty is typically 70 to 80% of original. The trailer is still operational but produces less revenue, and secondary market price reflects that. The cumulative rent during the original lease (€120K against €80K entry) covers the principal with margin to spare, so residual is upside, not downside, but the upside is meaningfully smaller than year-one asset value.
4. FX exposure for non-EUR investors. Rent is denominated in EUR. For USD, GBP, CHF, or other base currencies, quarterly distributions translate at the prevailing rate. A 5 to 10% EUR weakening across the lease compresses returns measurably. FX hedging is available for sustained positions above €500K equivalent but adds 0.5 to 1.5% per year in cost.
5. Equipment failure outside warranty scope. Tier-1 insurance covers physical damage and tier-1 manufacturer warranty covers cell degradation, but there are gaps (BMS firmware faults, balance-of-system electronics, cosmetic damage). Annual operator maintenance is included in the operator's site costs, but year-five and year-eight are typical inflection points for unscheduled work. Reserve approximately 1% of asset value per year for out-of-scope maintenance.
What this deal is not vulnerable to: short-duration price moves in panels or commodities (your rent is fixed for ten years), property-market risk (no real estate), regulatory shifts in tokenization (no token issued), or operator key-person risk that takes the asset away (the trailer is yours, on your EU company balance sheet, recoverable from any operator site).
The trailer comes off the same Romanian manufacturing line that produced two stationary 250 kW battery units already operating in Brașov. Both units are deployed on grid-services contracts with the same operator class that the mobile-trailer lease structure uses, with operating data available since installation.
What this means in practice: a site visit can be arranged to inspect the build quality of the units already in operation, the manufacturer facility itself, and the operating context of the Romanian grid services market. Site visits are typically arranged within 2 to 3 weeks of the first investment call. They are not required to participate in the deal, but for an allocator new to Romanian battery infrastructure, the inspection of a unit producing real revenue cuts most of the technical due diligence in half.
The mobile-trailer structure itself is newer than the stationary deployments. It exists specifically to provide investors the relocation optionality that the stationary structure does not have. The build quality, cell chemistry, BMS, and insurance package are identical to the stationary units; the difference is the chassis and the lease form factor.
Manufacturer references and operator references are available on request after the first investment call. The manufacturer is reference-callable for prior buyers of stationary units. The operator is reference-callable for prior lease counterparties.
A common question from allocators new to the deal: if the stationary 250 kW units are already operating profitably in Brașov, why not just invest in another stationary unit? The honest answer is the form factor.
Stationary BESS containers are bolted to a specific site. The operator builds the grid connection, the substation interface, the site preparation. If the operator-tenant relationship fails mid-lease, the investor has equipment on a site they do not control, with no straightforward path to recover the asset. The downside in stationary BESS is a long, expensive recovery process.
Mobile BESS trailers are road-legal. The trailer can be unhooked from one operator site and towed to another within days. The asset stays on your EU company balance sheet throughout, and a fresh lease with a different operator restarts the rent stream. The mobile form factor is what makes the €80K ticket defensible at 15% yield: the downside path is operational, not legal.
The trade-off is that mobile trailers run smaller capacity (typically 100 to 250 kW) than stationary containers (500 kW to 5 MW), which limits the per-unit rent. For larger tickets where the additional capacity per unit makes the recovery risk worth taking, the stationary BESS structure is the right tool.
| Deal | Min ticket | Target yield | Cycle / horizon |
|---|---|---|---|
| Mobile BESS trailer | €80K | ~15% p.a. | 10-year lease |
| Solar trading SPV | €121K | ~22.6% p.a. base | 45 to 60 days, revolving |
| Stationary BESS container | €500K | ~20% p.a. | 5 to 7-year hold |
| Industrial warehouse, Austria | €2.8M | ~7.7% gross (projected) | 7 to 10-year hold |
| Industrial park, Brașov | €12.5M | ~9.1% gross | 10-year hold |
The mobile BESS trailer is the lowest entry ticket and the longest fixed-cash-flow horizon on the desk. It is the right deal for an allocator who wants contractual, predictable quarterly income with a clear physical asset behind the lease. It is the wrong deal for an allocator wanting short-cycle reinvestment optionality (use the solar trading SPV) or maximum yield per euro at scale (use the stationary BESS).
For comparison across all five live deals at your specific ticket and horizon, the calculator filters the live shelf and shows which deals fit.
I walk you through the trailer specification, the lease contract, the operator counterparty, and the two stationary units already running in Brașov that you can inspect if you want to. Bring your ticket size and your residency, I will show you what the structure looks like net of overhead and tax at your numbers. Either it fits your portfolio or it does not.
The standard sequence. The structure has been done enough times that the documentation pack is standardised and the timeline is predictable.
Total elapsed time from first call to first rent payment is typically 90 to 120 days, with the longest single step being trailer manufacturing rather than legal or banking processes.
€80,000 buys one trailer. Position scales by acquiring additional trailers on the same structure, up to €5M+ across a multi-trailer position.
15% gross per year on the lease basis (€12K rent on €80K ticket), fixed in the ten-year lease, paid quarterly. After €2K to €5K annual company overhead: ~8.8 to 12.5% net at company level. After corporate tax (1-3% under Romanian micro-enterprise regime or 16% on retained profit): ~7% to 12% net at company level. After dividend withholding when distributed: ~6.5% to 11% net in your personal pocket. Calendar Year 1 effective yield is lower (~7.5 to 11% gross) due to a ~180-day dead period from wire to first rent. See section 03 and section 05 for the full cascade.
A Romanian battery manufacturer based in Brașov, on the same line as two stationary 250 kW units already operating in Brașov that can be inspected before purchase. 10 to 15-year warranty on the cells.
A licensed Romanian grid operator. The operator deploys the trailer onto a grid-services site, captures the Romanian day-night price spread (15 to 25%, widest in the EU), and pays your EU company fixed quarterly rent for ten years.
The trailer is mobile by design. Your EU company recovers the asset from the operator's site and re-leases it to a different operator. Mobile form factor is the deliberate downside protection. See section 08 for why this matters.
No. Direct equipment ownership through your EU company. Tokenization overhead does not pay off below ~€500K of pooled capital. For tokenized exposure to battery storage, the stationary BESS deal on the same desk is structured differently.
Yes. Two stationary 250 kW units from the same manufacturer are already operating in Brașov. Site visit arranged within 2 to 3 weeks of the first investment call. Recommended for allocators new to Romanian battery infrastructure.
Operator counterparty over ten years, day-night spread compression at year-ten renewal, residual asset value at end of warranty, FX for non-EUR investors, and out-of-scope equipment maintenance. Full breakdown in section 06.
Depends on the company jurisdiction. Romanian SRL: 16% corporate tax (1-3% under micro-enterprise regime if eligible), 8% dividend withholding. Other EU jurisdictions vary from 9% (Hungary) to 25% (France), with treaty-dependent withholding on distributions.
Different time horizon and risk profile. Mobile BESS: 10-year fixed lease, 15% contractual rent, lower ticket (€80K), quarterly income. Solar trading SPV: 45 to 60-day revolving cycle, ~22.6% gross from inventory margin, higher ticket (€121K), liquid at each cycle end. Different tools for different portfolios.