Use case: villa / small-commercial PV + battery retrofit (20 kWp PV array paired with one Sungrow SH20T). Vertical: LFP / solar BoS reference. Page role: B2B TCO & landed-cost reference, not an offer. Equipment model: Sungrow SH20T (Sungrow Power Supply Co., Ltd.). Reference scenario: 25-year horizon, EUR 11,000 landed CapEx, EUR 0.28/kWh avoided import price, 55% self-consumption, 8.00% discount rate.
Datasheet is OEM-controlled and gated behind the RFQ form. We do not host the file ourselves and do not link to a placeholder path.
Verdict (CN→Latvia, 25-year horizon, evidence date 2026-09-21): For a Sungrow SH20T referenced at EUR 11,000 landed CapEx, EUR 0.28/kWh avoided import price and 55% self-consumption share, the computed NPV is EUR 32,733.53, IRR is 34.28%, simple payback is 3.00 yr, discounted payback is 3.56 yr, and LCOE is EUR 0.0565/kWh. Limitation: this is a model result for the stated bounded assumptions; landing CapEx, EU duty, LV VAT and grid-connection fees are PENDING — lookup against EU TARIC and VID for the actual shipment date.
| Item | Value |
|---|---|
| Equipment model (real) | Sungrow SH20T — 20 kW three-phase hybrid inverter |
| OEM | Sungrow Power Supply Co., Ltd. |
| Location | CN → Latvia (destination: Riga / Daugavpils villa) |
| Horizon | 25 years |
| Discount rate | 8.00% |
| Landled CapEx (input, bounded assumption) | EUR 11,000.00 (system) |
| NPV (EUR) | 32,733.53 |
| IRR | 34.28% (0.3428) |
| Simple payback (yr) | 3.00 |
| Discounted payback (yr) | 3.56 |
| LCOE (EUR/kWh) | 0.0565 |
| PV of costs (EUR) | 11,000.00 |
| Undiscounted benefit sum (EUR) | 108,391.05 |
| PV of benefits (EUR) | 43,733.53 |
| Tariff escalation (assumption) | 1.5% / yr |
| PV degradation (assumption) | 0.50% / yr |
| Fixed OpEx (assumption, EUR/yr) | 0.00 |
| Residual value (assumption) | EUR 0 at year 25 |
| Evidence date | 2026-09-21 |
| Limitation | Landed CapEx, EU duty and LV VAT are PENDING — verify against EU TARIC and VID for the actual shipment date. |
This page is parameterised on the Sungrow SH20T, a real, publicly marketed three-phase hybrid inverter (20 kW AC output, two MPPT, LV battery port, compatible with Sungrow SBR LFP battery modules). It is the OEM's own model designation; the previous draft label "Villa Hybrid 20kW" was a tradvolt use-case name, not a product name, and has been removed.
| Item | Value | Source |
|---|---|---|
| Equipment model (family) | Sungrow SH20T (SH-series residential / small-commercial hybrid inverter, three-phase, 20 kW) | Sungrow product page: https://www.sungrowpower.com/ResidentialPV/HybridInverter (accessed 2026-09-21) |
| OEM datasheet / product page | Sungrow SH20T product page (English) | https://en.sungrowpower.com/ResidentialPV/HybridInverter |
| OEM manual title & revision | Sungrow SH20T User Manual — refer to the current revision on the Sungrow download portal before any electrical work | https://en.sungrowpower.com/Service/Download (manual revision displayed on the product page; not reproduced here) |
| Torque / SOC / voltage limits | Per current OEM manual revision (DC connector torque, battery SOC operating window, MPPT voltage range, max DC input voltage) | https://en.sungrowpower.com/Service/Download — always cross-check the live revision before installation |
| Paired LFP battery (real) | Sungrow SBR battery module series (e.g. SBR096 / SBR128 / SBR160), LFP chemistry | Sungrow product page: https://en.sungrowpower.com/ResidentialPV/Battery |
We do not embed or paraphrase torque / SOC / voltage figures here. Any limit depends on the OEM manual revision that is current on the day of installation; the OEM URL above is the computed source.
| Line | Description | Unit | Value | Source / claim row |
|---|---|---|---|---|
| EXW unit price | Sungrow SH20T, three-phase, LV battery port | EUR / unit | PENDING — lookup (OEM quote) | [Claim | Src: OEM quote via RFQ | URL: Sungrow SH20T product page | accessed 2026-09-21] |
| Qty | Units per villa system | pcs | 1 | [Claim | Src: use-case definition (1 SH20T per 20 kWp array) | URL: Sungrow SH20T product page | accessed 2026-09-21] |
| Inner packing | Carton + pallet, per OEM datasheet | EUR / unit | PENDING — lookup | [Claim | Src: OEM packaging data | URL: Sungrow download portal | accessed 2026-09-21] |
| Pre-shipment inspection (PSI) | Third-party PSI | EUR / shipment | PENDING — lookup | [Claim | Src: SGS PSI service description | URL: https://www.sgs.com/en/services/pre-shipment-inspection | accessed 2026-09-21] |
| Ocean freight FOB→Riga | LCL or 20'FCL depending on qty | EUR / shipment | PENDING — lookup | [Claim | Src: freight forwarder rate sheet | URL: Maersk schedules | accessed 2026-09-21] |
| Insurance | ~0.3–0.5% of CIF, ICC (A) | EUR / shipment | PENDING — lookup | [Claim | Src: Institute Cargo Clauses (A) wording | URL: LMA/JCC ICC (A) 2009 | accessed 2026-09-21] |
| CIF Riga | FOB + freight + insurance | EUR / system | PENDING — lookup | [Claim | Src: derived from above lines | URL: tradvolt.com internal | accessed 2026-09-21] |
| EU import duty | Ad valorem on CIF | % of CIF | PENDING — lookup | [Claim | Src: EU TARIC — Latvia | URL: EU TARIC consultation | accessed 2026-09-21] |
| VAT (LV) | Standard rate on (CIF + duty) | % | PENDING — lookup | [Claim | Src: VID | URL: https://www.vid.gov.lv/en | accessed 2026-09-21] |
| Customs broker | Import declaration, EUR 1 | EUR / shipment | PENDING — lookup | [Claim | Src: LV-licensed customs broker quote | URL: VID customs broker register | accessed 2026-09-21] |
| Last-mile Riga / Daugavpils | DAP villa site | EUR / shipment | PENDING — lookup | [Claim | Src: haulier quote | URL: haulier listing | accessed 2026-09-21] |
| BoS (DC cabling, AC SPD, smart meter, mounting of inverter) | Per OEM BoS list | EUR / system | PENDING — lookup | [Claim | Src: OEM BoS list / datasheet | URL: Sungrow download portal | accessed 2026-09-21] |
| Install labour (LV-licensed installer) | Day rate + sign-off to network operator | EUR / system | PENDING — lookup | [Claim | Src: LV installer quote | URL: Sadales tīkls AS | accessed 2026-09-21] |
| Commissioning & grid-connection paperwork | Per DSO (Sadales tīkls) process | EUR / system | PENDING — lookup | [Claim | Src: Sadales tīkls AS | URL: Sadales tīkls grid-code page | accessed 2026-09-21] |
| Bounded CapEx assumption used in NPV | Sum of above, capped at the figure below | EUR / system | 11,000.00 | [Model assumption — bounded, EUR 11,000 used as the CapEx input to the scenario TCO model | URL: tradvolt.com internal | accessed 2026-09-21] |
| Input | Value used | Type | Source / claim row |
|---|---|---|---|
| PV array size paired with inverter | 20 kWp | Reference assumption | [Claim | Src: use-case SH20T 1:1 to 20 kWp | URL: Sungrow SH20T product page | accessed 2026-09-21] |
| Specific yield, Riga region | 950 kWh / kWp / yr | Reference assumption | [Claim | Src: PVGIS — JRC European Commission | URL: https://re.jrc.ec.europa.eu/pvgis/ | accessed 2026-09-21] |
| Annual generation year 1 | 19,000 kWh / yr | Derived | [Claim | Src: derived = 20 × 950 | URL: tradvolt.com internal | accessed 2026-09-21] |
| Self-consumption share | 55% | Bounded assumption | [Model assumption — typical LV residential self-consumption share, bounded at 55% | URL: tradvolt.com internal | accessed 2026-09-21] |
| Self-consumed energy year 1 | 10,450 kWh / yr | Derived | [Claim | Src: derived = 19,000 × 0.55 | URL: tradvolt.com internal | accessed 2026-09-21] |
| Grid import price avoided | EUR 0.28 / kWh (year 1) | Bounded assumption | [Model assumption — typical LV residential import tier; verify with your retailer | URL: Latvenergo tariff page | accessed 2026-09-21] |
| Exported energy price received | EUR 0.08 / kWh (year 1) | Bounded assumption | [Model assumption — net-metering placeholder; verify with retailer and current LV regulation | URL: Latvenergo tariff page | accessed 2026-09-21] |
| Tariff escalation | 1.5% / yr (EUR 0.28 base) | Bounded assumption | [Model assumption — bounded, applied to avoided import price and export price uniformly | URL: tradvolt.com internal | accessed 2026-09-21] |
| PV module degradation | 0.50% / yr | Bounded assumption | [Model assumption — bounded, applied as a multiplier on annual generation | URL: tradvolt.com internal | accessed 2026-09-21] |
| Fixed OpEx (EUR/yr) | 0.00 | Bounded assumption | [Model assumption — bounded, fixed annual OpEx is zero in the scenario TCO scenario; if a service contract is added, recompute the table | URL: tradvolt.com internal | accessed 2026-09-21] |
| Residual value (EUR) | 0 at year 25 | Bounded assumption | [Model assumption — bounded; SH-series inverter is typically fully depreciated over the 25-year horizon in this scenario | URL: tradvolt.com internal | accessed 2026-09-21] |
| Discount rate | 8.00% | Bounded assumption | [Model assumption — bounded WACC placeholder for B2B import scenarios | URL: tradvolt.com internal | accessed 2026-09-21] |
| Horizon | 25 years | Bounded assumption | [Model assumption — bounded, aligns with typical PV + LFP BoS asset life | URL: tradvolt.com internal | accessed 2026-09-21] |
Year 1 self-consumption value: 10,450 kWh × EUR 0.28 / kWh = EUR 2,926.
Year 1 export value: (19,000 − 10,450) kWh × EUR 0.08 / kWh = 8,550 kWh × EUR 0.08 / kWh = EUR 684.
Year 1 illustrative benefit = EUR 3,610. The full 25-year series, with tariff escalation at 1.5%/yr and PV degradation at 0.50%/yr, is shown in Section 3.5.
Using the scenario TCO model with the bounded inputs in Section 3.1:
| Self-consumption share ↓ \ Tariff EUR/kWh → | 0.20 | 0.24 | 0.28 | 0.32 |
|---|---|---|---|---|
| 35% | 5.05 | 4.21 | 3.61 | 3.16 |
| 45% | 4.31 | 3.59 | 3.08 | 2.70 |
| 55% | 3.76 | 3.13 | 2.69 | 2.35 |
| 65% | 3.32 | 2.77 | 2.37 | 2.08 |
Cells are computed payback years at EUR 11,000 CapEx using year-1 self-consumption and year-1 export price of EUR 0.08/kWh, no escalation, no degradation — for directional comparison only. The published 25-year NPV/IRR/LCOE figures in Section 3.6 use the full year-by-year model.
| Year | Cost (EUR) | Benefit (EUR) | Net (EUR) | Discount factor | Discounted net (EUR) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 11,000.00 | 0.0000 | -11,000.00 | 1.00 | -11,000.00 | 0.0000 |
| 1 | 0.0000 | 3,610.00 | 3,610.00 | 0.9259 | 3,342.59 | 19,000.00 |
| 2 | 0.0000 | 3,663.79 | 3,663.79 | 0.8573 | 3,141.11 | 18,905.00 |
| 3 | 0.0000 | 3,718.38 | 3,718.38 | 0.7938 | 2,951.77 | 18,810.48 |
| 4 | 0.0000 | 3,773.78 | 3,773.78 | 0.7350 | 2,773.84 | 18,716.42 |
| 5 | 0.0000 | 3,830.01 | 3,830.01 | 0.6806 | 2,606.64 | 18,622.84 |
| 6 | 0.0000 | 3,887.08 | 3,887.08 | 0.6302 | 2,449.52 | 18,529.73 |
| 7 | 0.0000 | 3,945.00 | 3,945.00 | 0.5835 | 2,301.87 | 18,437.08 |
| 8 | 0.0000 | 4,003.78 | 4,003.78 | 0.5403 | 2,163.12 | 18,344.89 |
| 9 | 0.0000 | 4,063.43 | 4,063.43 | 0.5002 | 2,032.73 | 18,253.17 |
| 10 | 0.0000 | 4,123.98 | 4,123.98 | 0.4632 | 1,910.20 | 18,161.90 |
| 11 | 0.0000 | 4,185.43 | 4,185.43 | 0.4289 | 1,795.06 | 18,071.09 |
| 12 | 0.0000 | 4,247.79 | 4,247.79 | 0.3971 | 1,686.86 | 17,980.74 |
| 13 | 0.0000 | 4,311.08 | 4,311.08 | 0.3677 | 1,585.18 | 17,890.83 |
| 14 | 0.0000 | 4,375.32 | 4,375.32 | 0.3405 | 1,489.62 | 17,801.38 |
| 15 | 0.0000 | 4,440.51 | 4,440.51 | 0.3152 | 1,399.83 | 17,712.37 |
| 16 | 0.0000 | 4,506.67 | 4,506.67 | 0.2919 | 1,315.45 | 17,623.81 |
| 17 | 0.0000 | 4,573.82 | 4,573.82 | 0.2703 | 1,236.16 | 17,535.69 |
| 18 | 0.0000 | 4,641.97 | 4,641.97 | 0.2502 | 1,161.65 | 17,448.01 |
| 19 | 0.0000 | 4,711.14 | 4,711.14 | 0.2317 | 1,091.63 | 17,360.77 |
| 20 | 0.0000 | 4,781.33 | 4,781.33 | 0.2145 | 1,025.83 | 17,273.97 |
| 21 | 0.0000 | 4,852.57 | 4,852.57 | 0.1987 | 963.99 | 17,187.60 |
| 22 | 0.0000 | 4,924.88 | 4,924.88 | 0.1839 | 905.88 | 17,101.66 |
| 23 | 0.0000 | 4,998.26 | 4,998.26 | 0.1703 | 851.28 | 17,016.15 |
| 24 | 0.0000 | 5,072.73 | 5,072.73 | 0.1577 | 799.97 | 16,931.07 |
| 25 | 0.0000 | 5,148.32 | 5,148.32 | 0.1460 | 751.75 | 16,846.42 |
| Metric | Value |
|---|---|
| Currency | EUR |
| Horizon (years) | 25 |
| Discount rate | 8.00 % |
| Total undiscounted cost (EUR) | 11,000.00 |
| Total discounted cost / PV of costs (EUR) | 11,000.00 |
| Total undiscounted benefit (EUR) | 108,391.05 |
| Total discounted benefit (EUR) | 43,733.53 |
| NPV (EUR) | 32,733.53 |
| IRR | 0.3428 |
| Simple payback (year) | 3.00 |
| Discounted payback (year) | 3.56 |
| LCOE (EUR/kWh) | 0.0565 |
Costs (EUR 11,000) are paid at year 0, so undiscounted and discounted costs are identical. Benefits (EUR 3,610 / yr base, escalating 1.5%/yr) are discounted at 8.00%. LCOE = PV(costs) ÷ Σ annual kWh = 11,000 / 194,672.81 kWh ≈ EUR 0.0565/kWh. NPV, IRR and discounted payback share the same 8.00% discount rate, 25-year horizon and time-aligned cash flow as Section 3.5.
| Window | Undiscounted OpEx (EUR) | Discounted OpEx (EUR, 8.00%) |
|---|---|---|
| Years 1–10 (fixed OpEx only) | 0.00 | 0.00 |
| Years 1–10 (sum of costs incl. year-0 CapEx) | 11,000.00 | 11,000.00 |
| Years 1–10 (sum of benefits) | 38,619.16 | 25,673.39 |
Because fixed OpEx is bounded at EUR 0/yr in this scenario, undiscounted and discounted OpEx over years 1–10 are both EUR 0.00; the only cost in the window is the EUR 11,000 year-0 CapEx, which is also undiscounted = discounted. The benefit row is shown alongside so costs and benefits share the same time basis.
ILLUSTRATIVE — NOT A QUOTE. Tradvolt does not warrant any number on this page. Confirm all duties, VAT and grid-connection fees with the named official bodies before purchase.
| Item | Status | Issuer / source |
|---|---|---|
| CE marking (LVD 2014/35/EU) | PENDING — confirm certificate number with Sungrow | [Claim | Src: Directive 2014/35/EU (LVD) | accessed 2026-09-21] |
| CE marking (EMC 2014/30/EU) | PENDING — confirm certificate number with Sungrow | [Claim | Src: Directive 2014/30/EU (EMC) | accessed 2026-09-21] |
| RoHS 2011/65/EU | PENDING — confirm with Sungrow declaration | [Claim | Src: Directive 2011/65/EU (RoHS) | accessed 2026-09-21] |
| Grid code compliance (Sadales tīkls) | PENDING — confirm SH20T acceptance for LV | [Claim | Src: Sadales tīkls grid-code page | accessed 2026-09-21] |
| IEC 62109 (safety of power converters) | PENDING — confirm certificate number with Sungrow | [Claim | Src: IEC 62109-1 catalogue entry and IEC 62109-2 catalogue entry | accessed 2026-09-21] |
| IEC 50530 / IEC 61683 (efficiency measurement, where applicable) | PENDING — confirm with Sungrow test report | [Claim | Src: IEC 61683 and IEC 50530 | accessed 2026-09-21] |
| UN Manual of Tests (lithium battery transport, if shipping with batteries) | Per UN 38.3 | [Claim | Src: UN Manual of Tests and Criteria, 7th revised edition | accessed 2026-09-21] |
No certificate number, test-house logo or "No.1 / market leader" claim is reproduced on this page. Request the originals from the OEM via the RFQ form.
| HS national line | Program | As-of | SoT |
|---|---|---|---|
| HS 8504.40 (static converters) — confirm via EU TARIC for Latvia | EU Common Customs Tariff + national measures | 2026-09-21 | PENDING |
| HS 8504.90 (parts) — confirm if declared separately | EU Common Customs Tariff + national measures | 2026-09-21 | PENDING |
EU import duty rate: PENDING — lookup (official portal: EU TARIC — Taxation and Customs Union, European Commission, EU TARIC consultation, consulted 2026-09-21). Bind the HS code and duty rate with the LV customs authority before shipment. [Claim | Src: EU TARIC portal | URL: EU TARIC consultation | accessed 2026-09-21]
LV standard VAT: PENDING — lookup (official portal: State Revenue Service of Latvia (VID), https://www.vid.gov.lv/en, consulted 2026-09-21). [Claim | Src: VID | URL: https://www.vid.gov.lv/en | accessed 2026-09-21]
Request Datasheet Access (OEM-controlled PDF) — datasheet is OEM-controlled; we do not host the file and do not link to a placeholder path. Access is gated behind the RFQ form.
The indicative CN/EU subheading is 8504.40 (static converters). If the Sungrow SBR battery modules are shipped on the same declaration, parts may be classified under 8504.90. Confirm via the official EU TARIC database for Latvia before shipment. [Claim | Src: EU TARIC | URL: EU TARIC consultation | accessed 2026-09-21]
No. EUR 11,000 is the bounded assumption used to compute NPV, IRR, payback and LCOE on this page (see Section 3.1 and Section 3.5). The EUR 0.28/kWh tariff is a bounded assumption reflecting a typical LV residential import tier; verify with your retailer. All duty and VAT rates remain PENDING — lookup against EU TARIC and VID for the actual shipment date.
At minimum, CE-marking under LVD 2014/35/EU, EMC 2014/30/EU and RoHS 2011/65/EU. Safety of power converters is tested per IEC 62109-1/-2. Grid-interconnection acceptance is set by the Latvian DSO Sadales tīkls AS; confirm the SH20T model entry on the Sadales tīkls acceptance list before commissioning. [Claim | Src: LVD, EMC, RoHS, IEC 62109-1, Sadales tīkls | accessed 2026-09-21]
Year-by-year cash flow with costs at year 0 (EUR 11,000) and benefits from year 1 onward, escalated at 1.5%/yr and degraded by 0.50%/yr on the generation side. NPV, IRR and discounted payback use an 8.00% discount rate over a 25-year horizon. LCOE = PV(costs) ÷ Σ annual generation kWh. See Sections 3.5 and 3.6 for the full tables.
Incoterms are set per RFQ. Submit the Request Quote form with the desired incoterm (e.g. FOB, CIF, DAP, DDP) and the destination city in Latvia; Tradvolt will respond within 48 hours.
With the State Revenue Service of Latvia (VID) at https://www.vid.gov.lv/en. The current applicable LV standard rate on the customs value plus duty must be re-checked at the time of import. [Claim | Src: VID | URL: https://www.vid.gov.lv/en | accessed 2026-09-21]
© Tradvolt. CN→world green-tech export reference. Allow-listed sources only: OEM datasheets (Sungrow), EU customs / TARIC, EUR-Lex directives, IEC catalogue, UN Manual of Tests and Criteria, Latvian authorities (VID, Sadales tīkls). No blogs, forums or aggregator content is cited.