Does the ATESS PCS250-US-480 come with a transformer?

Yes, this model includes a transformer, making installation easier and ensuring better compatibility with various electrical systems.

Is the ATESS US standard 250KW battery inverter suitable for renewable energy setups?

Absolutely. It integrates smoothly with large solar or wind storage solutions, offering stable power conversion and smart energy management.

Can I monitor the ATESS PCS250-US-480 remotely?

Yes. The inverter features intelligent remote monitoring that provides real-time data, performance insights, and remote diagnostic capabilities.

What makes the ATESS US standard 250KW battery inverter reliable for long-term use?

Its multi-layer protection system, high-efficiency rating, durable engineering, and transformer-based design ensure consistent performance and long operational life.

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ATESS US standard 250KW battery inverter (included transformer) - ATESS PCS250-US-480

ATESS US standard 250KW battery inverter (included transformer) - ATESS PCS250-US-480

ATESS US standard 250KW battery inverter (included tranformer) - ATESS PCS250-US-480 | Portlandia Electric Supply

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ATESS US standard 250KW battery inverter (included transformer) - ATESS PCS250-US-480

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$57,687.50 USD

$ $57,687.50 USD

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9+ sold

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Specifications

Product Category Inverter

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

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Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

ATESS PCS250-US-480 — 250 kW Bidirectional Battery Inverter (277/480 V Wye)

The ATESS US standard 250KW battery inverter – ATESS PCS250-US-480 is a powerful, high-efficiency commercial energy conversion solution designed to meet the modern demands of large-scale renewable energy systems. Built for durability, stable performance, and seamless grid interaction, this inverter delivers unmatched reliability for industrial facilities, energy storage applications, and renewable power plants. With advanced features, intelligent controls, and integrated transformer support, it ensures high-quality power conversion with maximum uptime and operational convenience.

PCS250-US-480 is a high-power 3-phase PCS that bidirectionally integrates the battery with the grid/DG. ≤10 ms seamless transfer (manual default; auto optional) and up to 8 units parallel support, making it ideal for large C&I microgrids. ^{[ATESS datasheet]}

Key features

250 kW / 275 kVA @ 480 V (3/N/PE), 432–528 V range
Battery 500–820 V, max charge/discharge 550 A
Max efficiency 97.3%, Type 1 enclosure, −25 °C ~ +55 °C
Built-in transformer; DC lightning protection Type II
Touchscreen LCD, RS485/CAN; DG remote (dry contact)

Specifications

**PCS250-US-480** — specification box
AC (on-grid)
Apparent / rated power	275 kVA / 250 kW
Rated voltage / current	480 V (277/480 V wye), 301 A
Voltage / freq range	432–528 V; 50/60 Hz (45–55/55–65 Hz)
PF / THDi	0.8 lag–0.8 lead; <3%
AC (off-grid)
Rated power / current	250 kW / 301 A @ 480 V
THDu / overload	≤2% (linear); 110% 10 min, 120% 1 min
DC (battery)
Voltage range	500–820 VDC
Max charge / discharge	550 A
General
Efficiency	97.30% (max)
Enclosure / noise	Type 1; <65 dB(A) @ 1 m
Environment	−25 °C ~ +55 °C; ≤6000 m (derate >3000 m)
Transfer (grid↔backup)	Manual (default); Automatic (optional) ≤10 ms
Dimensions (W×H×D)	1600 × 2080 × 850 mm (≈ 62.99″ × 81.89″ × 33.46″)
Weight	1465 kg (≈ 3229.77 lb)
Built-in transformer	Yes

Why the ATESS PCS250-US-480 Stands Out

The ATESS PCS250-US-480 is designed to support demanding commercial and industrial power requirements with a smart, flexible, and robust architecture. Its compatibility with high-voltage battery systems ensures smooth energy conversion, while advanced cooling and protection features guarantee long-term stability.

This inverter is widely recognized for offering high conversion efficiency, low operational noise, and multi-functional operating modes, making it a strong choice for progressive businesses aiming for long-term energy independence.

Key Features of the ATESS US Standard 250KW Battery Inverter

1. High Conversion Efficiency

The ATESS PCS250-US-480 is engineered to deliver exceptional efficiency, ensuring minimal energy loss during operation. Higher efficiency equates to better performance, reduced operating costs, and improved sustainability for any energy storage project.

2. Transformer Included for Maximum Flexibility

A major highlight of the ATESS US standard 250KW battery inverter (included transformer) – ATESS PCS250-US-480 is the built-in transformer, which simplifies installation and improves safety. This enhances compatibility with different grid systems and reduces engineering complexity.

3. Advanced Protection Systems

This powerful inverter is built with multiple layers of protection, including short-circuit safeguards, temperature monitoring, overload protection, and anti-islanding functionality. These features ensure stable, secure, and long-lasting operation even in high-demand conditions.

4. Intelligent Monitoring & Remote Management

The integrated monitoring system allows real-time data tracking, performance optimization, and remote diagnostics. This ensures complete visibility over operational parameters and quick troubleshooting if needed.

Applications of the ATESS PCS250-US-480

Commercial & Industrial Facilities

Ideal for warehouses, manufacturing plants, and commercial buildings that require consistent, high-capacity energy support.

Renewable Energy Storage Systems

Designed to pair seamlessly with large-scale solar or wind installations for efficient storage and smart energy management.

Microgrid & Backup Power Solutions

The inverter plays a crucial role in stabilizing microgrids and providing reliable backup power during outages or peak load times.

Advantages of Choosing the ATESS US Standard 250KW Battery Inverter – ATESS PCS250-US-480

Investing in this inverter offers long-term value, performance stability, and operational ease. Users benefit from:

Lower energy costs due to efficient operation
Improved grid stability and load balancing
Seamless integration with modern energy storage technologies
Strong performance in demanding industrial environments
Long lifecycle and durable engineering

All these benefits make it a trusted choice for energy professionals who prioritize performance and reliability.

Specifications Overview

While the complete technical sheet contains in-depth data, the ATESS PCS250-US-480 generally includes:

Rated Power Output: 250KW
Grid Compatibility: 480V
High-voltage battery support
Integrated transformer for streamlined installation
Intelligent cooling and thermal management
Remote monitoring capabilities
Multiple operation modes for flexible usage

These specs form a strong foundation for robust energy conversion in a wide range of professional setups.

Why Businesses Prefer the ATESS PCS250-US-480

This inverter is known for its balance of performance, flexibility, and cost-effectiveness. Companies seeking scalable, dependable, and future-ready energy solutions find value in its design and features. The ATESS US standard 250KW battery inverter ensures that large-scale systems run smoothly, safely, and efficiently year after year.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

ATESS PCS250-US-480 — 250 kW Bidirectional Battery Inverter (277/480 V Wye)

Key features

250 kW / 275 kVA @ 480 V (3/N/PE), 432–528 V range
Battery 500–820 V, max charge/discharge 550 A
Max efficiency 97.3%, Type 1 enclosure, −25 °C ~ +55 °C
Built-in transformer; DC lightning protection Type II
Touchscreen LCD, RS485/CAN; DG remote (dry contact)

Specifications

**PCS250-US-480** — specification box
AC (on-grid)
Apparent / rated power	275 kVA / 250 kW
Rated voltage / current	480 V (277/480 V wye), 301 A
Voltage / freq range	432–528 V; 50/60 Hz (45–55/55–65 Hz)
PF / THDi	0.8 lag–0.8 lead; <3%
AC (off-grid)
Rated power / current	250 kW / 301 A @ 480 V
THDu / overload	≤2% (linear); 110% 10 min, 120% 1 min
DC (battery)
Voltage range	500–820 VDC
Max charge / discharge	550 A
General
Efficiency	97.30% (max)
Enclosure / noise	Type 1; <65 dB(A) @ 1 m
Environment	−25 °C ~ +55 °C; ≤6000 m (derate >3000 m)
Transfer (grid↔backup)	Manual (default); Automatic (optional) ≤10 ms
Dimensions (W×H×D)	1600 × 2080 × 850 mm (≈ 62.99″ × 81.89″ × 33.46″)
Weight	1465 kg (≈ 3229.77 lb)
Built-in transformer	Yes

Why the ATESS PCS250-US-480 Stands Out

Key Features of the ATESS US Standard 250KW Battery Inverter

1. High Conversion Efficiency

2. Transformer Included for Maximum Flexibility

3. Advanced Protection Systems

4. Intelligent Monitoring & Remote Management

Applications of the ATESS PCS250-US-480

Commercial & Industrial Facilities

Ideal for warehouses, manufacturing plants, and commercial buildings that require consistent, high-capacity energy support.

Renewable Energy Storage Systems

Designed to pair seamlessly with large-scale solar or wind installations for efficient storage and smart energy management.

Microgrid & Backup Power Solutions

The inverter plays a crucial role in stabilizing microgrids and providing reliable backup power during outages or peak load times.

Advantages of Choosing the ATESS US Standard 250KW Battery Inverter – ATESS PCS250-US-480

Investing in this inverter offers long-term value, performance stability, and operational ease. Users benefit from:

Lower energy costs due to efficient operation
Improved grid stability and load balancing
Seamless integration with modern energy storage technologies
Strong performance in demanding industrial environments
Long lifecycle and durable engineering

All these benefits make it a trusted choice for energy professionals who prioritize performance and reliability.

Specifications Overview

While the complete technical sheet contains in-depth data, the ATESS PCS250-US-480 generally includes:

Rated Power Output: 250KW
Grid Compatibility: 480V
High-voltage battery support
Integrated transformer for streamlined installation
Intelligent cooling and thermal management
Remote monitoring capabilities
Multiple operation modes for flexible usage

These specs form a strong foundation for robust energy conversion in a wide range of professional setups.

Why Businesses Prefer the ATESS PCS250-US-480

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Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

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Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

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I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

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Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

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You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

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Great Experience

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Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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