# On-grid 3-Phase Inverter TWERD PS300-WT 10 kW, single MPPT, grid-tied solar inverter

**URL:** https://aio.lv/en/product--oem-twe-ps300-wt-10kw--11009795
**Data updated:** 2026-06-25 19:50 (EEST)
**Category:** Power Inverters
**Manufacturer:** OEM
**Manufacturer code:** TWE-PS300-WT-10KW
**EAN:** 5904905315977
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4 666.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 3 856.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-twe-ps300-wt-10kw--11009795

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Courier delivery to door | 16.07.2026 | 53.99 EUR |

## Summary description

The TWERD PS300-WT is an on-grid 3-phase inverter with 10 kW rated output for grid-tied solar systems. Designed for single-MPPT PV arrays, it converts DC from solar panels to AC for feeding the public network. Suitable for residential and light-commercial installations, it supports efficient energy conversion, grid synchronization and standard protections to ensure stable power delivery.

## Long description

The TWERD PS300-WT is a high-performance 3-phase on-grid inverter designed for 10 kW solar power systems. This grid-tied solar inverter efficiently converts direct current generated by photovoltaic panels into alternating current, which is then synchronized with the public electrical network. Engineered for reliability and consistent energy production, it serves as a core component for residential and light-commercial solar installations, ensuring optimal power conversion and grid stability.
Advantages
This inverter offers robust performance through its 3-phase architecture, which provides balanced power distribution across the electrical grid. Its design focuses on high conversion efficiency, minimizing energy losses during the transformation process. The unit is built to withstand standard operational demands, featuring integrated protection mechanisms that safeguard the system against common electrical faults. Its compact and functional design allows for straightforward integration into existing solar setups, promoting long-term operational reliability and ease of maintenance.
Suitable for
Residential solar power systems requiring 10 kW capacity
Light-commercial grid-tied photovoltaic installations
Systems utilizing a single-MPPT solar array configuration
Projects aiming for efficient grid synchronization and energy feed-in
This inverter may not be suitable for off-grid systems that require battery storage, as it is specifically engineered for grid-tied operation. Additionally, it is not designed for installations involving complex multi-string arrays that require independent MPPT tracking for each string.
Key specifications
Rated output power: 10 kW
System type: 3-phase on-grid
MPPT configuration: Single MPPT
Application: Grid-tied solar systems
Output: AC power for public network synchronization
Installation should be performed by a qualified professional to ensure compliance with local electrical codes and safety standards. The inverter must be mounted in a well-ventilated area, protected from direct environmental exposure, and connected to the solar array and the grid according to the provided technical documentation. Once installed, the system automatically manages the conversion process and grid synchronization.
What to consider before purchase
Verify that your solar array configuration is compatible with a single-MPPT input
Ensure your local grid regulations permit 3-phase grid-tied solar connections
Confirm that the 10 kW output capacity matches your energy production requirements
Check the available installation space for proper ventilation and maintenance access
Usage recommendations
Regularly monitor the inverter status via the integrated interface to ensure optimal performance and check for any system alerts. Keep the cooling vents clear of dust and debris to maintain efficient thermal management throughout the year.

## FAQ

### How much does the On-grid 3-Phase Inverter TWERD PS300-WT 10 kW cost, and is it available for purchase?

The price is 4,666.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can On-grid 3-Phase Inverter TWERD PS300-WT 10 kW be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All OEM products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized OEM service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11009795/65907873_large.webp