BESS Funding:
Leasing, ESCO and business models
The main barrier to implementing BESS is not technology, but capital costs. A 1 MW*h system costs $150,000-250,000. Not every enterprise is ready to invest such an amount right away, even if the payback is 2-3 years. Fortunately, there are financial instruments that allow you to get a BESS without a large initial investment or even no down payment at all.
6 BESS funding models
1. Direct purchase (CAPEX)
Essence: The company buys BESS with its own funds or from a credit line.
Prepayment: 100% (or 30-50% advance + the rest upon delivery)
Ownership: Full, of the first day
Advantages: Maximum NPV, full control, amortization on the balance sheet
Disadvantages: Large one-time expenses, load on the balance sheet
For whom: Large enterprises with a free CAPEX budget
2. Financial leasing
Essence: The leasing company buys BESS, the company pays monthly payments for 3-7 years.
Prepayment: 10-30%
Ownership: Transfers after the last payment
Advantages: Stretched CAPEX, tax advantages (VAT in installments), asset on the balance sheet
Disadvantages: Overpayment 15-25% (interest rate), credit history required
For whom: A medium-sized business that wants to spread costs
3. Operating leasing
Essence: The equipment remains the property of the lessor. The enterprise pays "rent" for use.
Prepayment: 0-10%
Ownership: Remains with the lessor (or redemption at residual value)
Advantages: Does not burden the balance, payments are expenses (reduce the tax base)
Disadvantages: Higher overpayment, restrictions on modifications
For whom: Companies that optimize the balance sheet or do not want to take risks
4. ESCO (Energy Service Company)
Essence: ESCO installs BESS at its own expense. The company pays a percentage of real savings.
Prepayment: $0
Ownership: ESCO (transition after 5-10 years)
Advantages: Zero risk, zero CAPEX, pay only for results
Disadvantages: Smaller NPV (savings sharing), long contract
For whom: Any business, especially skeptics ("show the result first")
5. PPA for Storage
Essence: Power Purchase Agreement — the company buys "saved" electricity at a fixed price below the market price.
Prepayment: $0
Ownership: Investor/operator
Advantages: Estimated price for 10-15 years, hedging against rising tariffs
Disadvantages: Long-term contract, less flexibility
For whom: Large consumers of predicted demand
6. Green bonds / Grants
Essence: Issuing green bonds or receiving a grant from IFC, EBRD, NEFKO to finance BESS.
Prepayment: Depends on the program
Ownership: Complete
Advantages: Low rate (3-6%), possible grant up to 30% of the cost
Disadvantages: Complicated procedure, ESG reporting requirements, long process
For whom: Large projects from 1 MW*h, municipal enterprises
Comparison of models: Case 1 MW*h
Let's consider a real example: an industrial enterprise plans to install a BESS of 1 MW*h / 500 kW for peak shaving and backup power. Turnkey CAPEX — $200,000. Annual savings (peak shaving + arbitration + avoidance of downtime) — $65,000. Calculation horizon — 15 years.
| Parameter | CAPEX | Finn. leasing | ESCO | PPA |
|---|---|---|---|---|
| Initial payment | $200 000 | $40 000 (20%) | $0 | $0 |
| Monthly payment | $0 | $3,800/month (5 years) | 50% savings | $4,200/month |
| Full cost for 15 years | $200 000 | $268 000 | $487 500 | $756 000 |
| General savings (15 years) | $975 000 | $975 000 | $975 000 | $975 000 |
| NPV (rate 12%) | $285 000 | $240 000 | $155 000 | $95 000 |
| IRR | 28% | 22% | N/A (zero investment) | N/A |
| Payback period | 3.1 years | 4.1 years | 0 (profit of 1 day) | 0 |
NPV comparison of financing models ($, thousand)
"NPV is the net profit of the project adjusted to the present value. The higher the NPV, the more money the project will bring to the owner. Direct purchase gives the maximum NPV, but ESCO gives the profit of the first day without any risk."
ESCO model in detail: How it works
ESCO (Energy Service Company) is a model that is gaining popularity in Ukraine, especially after the introduction of the ESCO Law (2021). The principle is simple: a specialized company installs BESS at its own expense, and the customer shares part of the savings during the contract period.
Step 1: Energy audit
ESCO conducts a free audit, installs a network analyzer, and simulates savings. If the project is unprofitable, the ESCO refuses (this is their risk).
Step 2: Guaranteed savings
ESCO guarantees minimum annual savings (for example, $50,000). If the actual savings are lower, ESCO will compensate for the difference.
Step 3: Installation
ESCO purchases, delivers and installs the BESS. The customer does not pay anything. The equipment is on ESCO's balance sheet.
Step 4: Distribution of savings
Typical distribution: 50/50 or 60/40 (in favor of the customer). If the savings are $65,000/year, the customer receives $32,500-39,000 of net profit on the first day.
Step 5: Transfer of ownership
After 5-10 years (depending on the contract), BESS becomes the full ownership of the customer. After that, 100% of savings remain with the client during the remaining service life (another 5-10 years).
International credit lines for Ukraine
Several international financial institutions have special programs for financing "green" energy in Ukraine, including BESS:
IFC (World Bank Group)
Program: Ukraine Sustainable Energy Finance (USELF)
Rate: 4-7% per annum in USD
Term: up to 10 years
Min. project: $500 000
Bonus: A grant of up to 20% of the project cost if ESG criteria are met
EBRD
Program: Green Economy Financing Facility (GEFF)
Rate: 5-8% per annum
Term: up to 7 years
Through: Partner banks in Ukraine (FUIB, Ukrgasbank, Oschadbank)
Bonus: Cashback up to 15% after verification of energy efficiency
NEFKO (Nordic Green Bank)
Program: Energy Efficiency in Ukraine
Rate: 3-5% per annum
Term: up to 8 years
Min. project: EUR 200 000
Bonus: Grant up to 30% for municipal and social facilities
Tax aspects
Key tax benefits of BESS in Ukraine
- Zero duty: From 2023 years, energy storage devices (HS codes 8507) are exempt from import duty (0% instead of 5%).
- Accelerated depreciation: Equipment for renewable energy can be depreciated according to group 4 (5 years) instead of the standard 15 years. This significantly reduces the income tax base.
- VAT on leasing: VAT of 20% is paid in installments of each leasing payment, and not immediately (unlike outright purchase).
- ESCO payments as costs: Payments of the ESCO company are fully related to the costs of operating activities (they reduce the income tax base).
- Exemption from land tax: Areas under RES facilities and accumulators may receive a discount (depends on the local council).
How to choose a financing model
Decision tree
- Have $150k+ CAPEX to spare? → Direct purchase (maximum NPV)
- Is there a 20-30% down payment + credit history? → Financial leasing (stretched CAPEX)
- Don't want to risk it? → ESCO (zero risk, profit of 1 day)
- A large project (1 MW*h+)? → IFC/EBRD green loan (low rate + grant)
- Do you want a fixed price for 15 years? → PPA for Storage (tariff hedge)
- A municipal facility? → NEFKO grant (up to 30% non-refundable)
Initial Payment by Models ($)
Frequently Asked Questions
Is it possible to get BESS absolutely free through ESCO?
What is the minimum project amount for an IFC/EBRD green loan?
How long does it take to process a lease on BESS?
Is it possible to combine several funding models?
What will happen to BESS after the end of the leasing/ESCO contract?
Is BESS insured when leasing?
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