Campsite ESS — Sungrow SBH 100 + SC50HV UK: use case & TCO
Answer (equipment: Sungrow SBH 100 battery + Sungrow SC50HV PCS; location: UK campsite; horizon: 10 years; discount rate: 6.00%; evidence date: 2026-09-22; limitation: tariff arbitrage only, no DSR or export revenue, DoD window 80–90% per model assumption). computed Base case: NPV = -25,602.54 GBP, simple payback = None, discounted payback = None, IRR = -0.1507, LCOS = 0.3253 GBP/kWh. Tariff arbitrage alone does not justify the asset at the base input set.
| Metric | Value | Source / note |
|---|---|---|
| Equipment family | Sungrow SBH 100 battery + Sungrow SC50HV PCS | Sungrow product range landing at sungrowpower.com/en; datasheet revision confirmed at RFQ stage (model assumption). |
| Location | UK campsite (GB) | Use-case specification (r9). |
| Horizon | 10 years | Use-case specification (r9); matches TCO summary table. |
| Discount rate | 6.00% / yr | Use-case specification (r9); matches TCO summary table. |
| Total discounted cost / PV of costs (computed) | 42,448.93 GBP | TCO summary table (this page). |
| Total discounted benefit (computed) | 16,846.39 GBP | TCO summary table (this page). |
| NPV (Base, computed) | -25,602.54 GBP | TCO summary table (this page). |
| Simple payback (Base, computed) | None | TCO summary table (this page); no payback year appears in the cash flow. |
| Discounted payback (Base, computed) | None | TCO summary table (this page). |
| IRR (Base, computed) | -0.1507 | TCO summary table (this page); negative IRR consistent with negative NPV. |
| LCOS (Base, computed) | 0.3253 GBP/kWh | TCO summary table (this page). |
1. Equipment
The modelled asset is a Sungrow SBH 100 battery cabinet paired with a Sungrow SC50HV PCS from Sungrow's C&I string-inverter and battery portfolio (see sungrowpower.com/en and the Sungrow string-inverter product range at sungrowpower.com/en/products/string-inverter). Sungrow publishes its product range from this landing; individual SBH 100 and SC50HV datasheet PDFs are JS-rendered and must be re-fetched at RFQ stage for the exact revision. Specific datasheet-asserted values used here (DoD window 80–90%, AC-side round-trip efficiency 88%, 2.0%/yr degradation, the capex 470.40 GBP/kWh implied 80 kWh usable, the 504 GBP/yr O&M, the year-10 replacement allowance, the year-10 residual, and the avoided grid cost of 0.1836 GBP/kWh) are unverified buyer-supplied inputs carried forward from the use-case specification (r9) and are not pinned to a public SBH 100 / SC50HV datasheet revision on this page.
2. Use case framing
A 70-pitch UK campsite with mixed touring and seasonal pitches typically sees a summer evening peak in the 18:00–22:00 window. The SBH 100 + SC50HV charged from the grid overnight and discharged across the evening window can flatten that peak and reduce imported kWh from the higher-tariff band. During shoulder-season weekends, the same asset can be used as a short-duration UPS-style buffer for the reception block, water pump, and EPOS terminal during short grid events.
3. scenario TCO tables (copy verbatim)
| Metric | Value |
|---|---|
| Currency | GBP |
| Horizon (years) | 10 |
| Discount rate | 6.00 % |
| Total undiscounted cost (GBP) | 44,571.69 |
| Total discounted cost / PV of costs (GBP) | 42,448.93 |
| Total undiscounted benefit (GBP) | 22,669.67 |
| Total discounted benefit (GBP) | 16,846.39 |
| NPV (GBP) | -25,602.54 |
| IRR | -0.1507 |
| Simple payback (year) | — |
| Discounted payback (year) | — |
| LCOS (GBP/kWh) | 0.3253 |
| Year | Cost (GBP) | Benefit (GBP) | Net (GBP) | Discount factor | Discounted net (GBP) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 37,632.00 | 0.0000 | -37,632.00 | 1.00 | -37,632.00 | 0.0000 |
| 1 | 504.00 | 2,478.55 | 1,974.55 | 0.9434 | 1,862.78 | 19,200.00 |
| 2 | 514.08 | 2,428.97 | 1,914.89 | 0.8900 | 1,704.25 | 18,816.00 |
| 3 | 524.36 | 2,380.40 | 1,856.03 | 0.8396 | 1,558.36 | 18,439.68 |
| 4 | 534.85 | 2,332.79 | 1,797.94 | 0.7921 | 1,424.14 | 18,070.89 |
| 5 | 545.55 | 2,286.13 | 1,740.59 | 0.7473 | 1,300.67 | 17,709.47 |
| 6 | 556.46 | 2,240.41 | 1,683.95 | 0.7050 | 1,187.12 | 17,355.28 |
| 7 | 567.59 | 2,195.60 | 1,628.01 | 0.6651 | 1,082.72 | 17,008.17 |
| 8 | 578.94 | 2,151.69 | 1,572.75 | 0.6274 | 986.76 | 16,668.01 |
| 9 | 590.52 | 2,108.65 | 1,518.14 | 0.5919 | 898.58 | 16,334.65 |
| 10 | 2,023.36 | 2,066.48 | 43.13 | 0.5584 | 24.08 | 16,007.96 |
4. Model inputs (explicit bounded assumptions)
| Input | Value | Unit | Source / note |
|---|---|---|---|
| Equipment family | Sungrow SBH 100 + Sungrow SC50HV | n/a | Sungrow product range at sungrowpower.com/en and sungrowpower.com/en/products/string-inverter; exact datasheet revision confirmed at RFQ. Model assumption. |
| Usable battery capacity | 80 | kWh | Use-case specification (r9); inside the SBH 100 80–90% DoD window. Unverified buyer-supplied input (r9). |
| Depth-of-Use window | 80–90 | % DoD | Use-case specification (r9); must be re-checked against the SBH 100 OEM manual revision at RFQ. Unverified buyer-supplied input (r9). |
| Round-trip efficiency (AC-side, incl. SC50HV PCS) | 88 | % | Use-case specification (r9); representative for SBH 100 + SC50HV at the operating DoD. Unverified buyer-supplied input (r9). |
| Daily full equivalent cycles | 1.0 | cycles/day | Use-case specification (r9). Unverified buyer-supplied input (r9). |
| Operating days per year | 240 | days | Use-case specification (r9), typical UK campsite season. Unverified buyer-supplied input (r9). |
| Calendar life | 10 | years | Use-case specification (r9). Unverified buyer-supplied input (r9). |
| Degradation rate (cap-excl.) | 2.0 | % / yr | Use-case specification (r9); energy column in computed cash flow shows the resulting declining annual kWh delivered (19,200 kWh in year 1 falling to 16,007.96 kWh in year 10). Unverified buyer-supplied input (r9). |
| Capex (battery + PCS + BoS + install, all-in) | 37,632.00 (year 0 line) | GBP | computed cash flow year 0; corresponds to 470.40 GBP/kWh on 80 kWh usable per use-case specification (r9). Unverified buyer-supplied input (r9). |
| Annual fixed O&M | 504.00 (year 1) escalating at 2.0% / yr | GBP / yr | Year 1 cost line in computed cash flow; use-case specification (r9). Unverified buyer-supplied input (r9). |
| asset.ess.charge_cost_per_kwh (bounded default) | 0.0000 | GBP / kWh | Explicit bounded default; matches year-0 benefit of 0.0000 GBP in computed cash flow. Model assumption. |
| asset.ess.value_per_kwh_discharged (bounded default) | 0.1291 (year 1, derived) | GBP / kWh delivered | Explicit bounded default; derived from computed benefit column: year 1 benefit 2,478.55 GBP ÷ 19,200 kWh = 0.1291 GBP/kWh. Model assumption. |
| Replacement allowance (mid-life, year 10) | Embedded in year-10 cost line 2,023.36 GBP | GBP | computed cash flow year 10 cost line; use-case specification (r9). Unverified buyer-supplied input (r9). |
| End-of-life residual (year 10) | Embedded in year-10 benefit line 2,066.48 GBP | GBP | computed cash flow year 10 benefit line; use-case specification (r9). Unverified buyer-supplied input (r9). |
| Avoided grid cost per kWh delivered (Base, derived) | 0.1291 (year 1, derived) | GBP / kWh delivered | Derived from computed benefit column: year 1 benefit 2,478.55 GBP ÷ 19,200 kWh = 0.1291 GBP/kWh. Derived figure, not a sourced rate. |
| Discount rate | 6.00 | % / yr | Use-case specification (r9); matches TCO summary table. |
| Horizon | 10 | years | Use-case specification (r9); matches TCO summary table. |
| Currency | GBP | n/a | Use-case specification (r9); matches TCO summary table. |
5. Sensitivity block (NPV / LCOS bracketing)
The computed Base NPV is -25,602.54 GBP. Across the scenario, total discounted cost / PV of costs is 42,448.93 GBP; total discounted benefit is 16,846.39 GBP. Discounted payback and simple payback are both None — no year in the computed cash flow produces a non-negative cumulative discounted or undiscounted net position — which is consistent with a negative IRR of -0.1507 and an LCOS of 0.3253 GBP/kWh above the year-1 delivered-energy unit cost of 0.1291 GBP/kWh derived from the computed benefit column.
6. Mini cert block
| Standard / scheme | Scope | Status |
|---|---|---|
| IEC 62619:2022 (secondary lithium cells and batteries for industrial applications, including stationary applications) | LFP cell-level safety for stationary BESS | Confirm supplier declaration of conformity at RFQ stage; full designation IEC 62619:2022 to appear in the supplier pack. Catalogue query: webstore.iec.ch. |
| UN 38.3 (UN Manual of Tests and Criteria, ST/SG/AC.10/11/Rev.7, Section 38.3, lithium battery provisions) | Transport of lithium batteries | Confirm supplier test summary at RFQ stage; canonical reference: unece.org/transport/dangerous-goods/un-manual-tests-and-criteria. |
| UKCA / CE (as applicable to UK / GB installation) | Electrical safety for stationary BESS | Confirm supplier declaration at RFQ stage. |
| UL 1973 (Batteries for Use in Stationary and Motive Auxiliary Power Applications) | Stationary BESS safety (used internationally) | Confirm if applicable at RFQ; standard page: shopulstandards.com UL 1973 page. |
| G99 (ENA, GB Distribution Code) | Grid connection > 16 A per phase | Confirm DNO sign-off at design stage. |
| Regulation (EU) 2023/1542 (EU Battery Regulation) | Carbon-footprint, recycled-content, and due-diligence obligations for batteries placed on the EU market | Relevant if the goods are placed on the EU/EEA market; full text: eur-lex.europa.eu/eli/reg/2023/1542/oj. |
7. HS code block
Final UK import duty must be looked up live against the UK Global Tariff at trade-tariff.service.gov.uk at the time of entry. Indicative codes:
| HS code (indicative) | Description | Where to verify |
|---|---|---|
| 8507.60 | Lithium-ion accumulators (incl. modules) | Live lookup at UK Global Tariff; cross-check EU classification at EU TARIC consultation; WCO HS chapter context at WCO HS Nomenclature 2022 edition. |
| 8504.40 | Static converters (PCS / inverters, e.g. Sungrow SC50HV) | Live lookup at UK Global Tariff; cross-check at USITC HTS for US reference only. |
| 8537.10 | Boards/panels for electric control/distribution (BESS switchgear / SCADA panel) | Live lookup at UK Global Tariff. |
Lookup instructions
- Open the UK Global Tariff at trade-tariff.service.gov.uk.
- Enter each indicative code (8507.60, 8504.40, 8537.10); review duty, VAT, and any anti-dumping or safeguards measures.
- Cross-check the UKGT against the EU TARIC at ec.europa.eu TARIC if the goods transit or originate in the EEA; for HS chapter/note context see WCO HS Nomenclature 2022 edition.
- Confirm any preferential origin (UK FTA partners) with the supplier's declaration. For ocean transport and Incoterms 2020 allocation, see ICC Incoterms 2020; for dangerous-goods air transport (UN 38.3) see IATA DGR.
Disclaimer
All duty rates above are marked PENDING. TradVolt does not assert any duty rate as fact. Final UK import duty must be confirmed against the official UK Global Tariff at the time of entry, by a licensed customs broker or via the official gov.uk trade tariff lookup. This page is not legal or tax advice.
8. Calls to action
Request a quotation sized to your campsite:
Request a campsite ESS quotation (Sungrow SBH 100 + SC50HV)
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