Pixii: Modular battery storage built from swappable 3.3 kW power converters

Overview

Pixii was registered in Kristiansand in March 2018 and spent its first years on grid pilots in Norway. In 2020 the network operator Elvia connected two 65 kWh Pixii battery packs to its grid at Sjusjøen to test whether storage could relieve local peaks more cheaply than new cables, as Tek.no reported. Growth followed quickly: Deloitte ranked Pixii first in its 2023 Technology Fast 50 for Norway on revenue growth of about 10,205% between 2019 and 2022, with 2022 revenue of NOK 177 million and more than 90% of sales exported, according to Energy Industry Review.

The design choice that sets Pixii apart is that its systems are assembled from many small, identical power converters rather than one central inverter. The 3.3 kW PixiiBox is a hot-swappable bidirectional module, and the same unit sits inside a home battery, a 50 kW cabinet and a 1 MW container. A failed module can be exchanged on site without replacing the inverter, and capacity grows in small steps. The approach comes from telecom power, where rack-mounted rectifiers on a 48 V bus are standard, and Pixii still sells a hybrid UPS and battery cabinet for telecom sites.

Pixii now positions itself as a supplier of complete storage systems with its own controller and energy management software, sold to utilities, industry, EV charging operators and tower companies. On its about page the company reports more than 250 MW of installed storage worldwide.

Offering

Pixii sells hardware systems with its own control software, priced per project and supplied directly or through partners. Its range is grouped into families:

Cabinets for commercial, industrial and telecom sites

• PowerShaper: an outdoor or indoor cabinet rated at 50 kW with 51.2 kWh installed (46.1 kWh usable) of lithium iron phosphate, offered with fan-filter, air-conditioned or indoor thermal management, or as an empty cabinet (PowerShaper specifications).
• PowerShaper XL: larger cabinets from 40 kW / 96 kWh to 60 kW / 225 kWh, plus indoor multi-cabinet sets up to 50 kW / 321 kWh (PowerShaper XL).
• PowerShaper TC: a combined UPS and battery cabinet for 48 V DC telecom sites, delivered as turnkey telecom power with Enetek Power (telecom page).

Utility and EV charging scale

• PowerBase XL: 540 kW / 2 MWh outdoor units (PowerBase XL).
• PowerBase XLP: 1 MW / 2 MWh with fan-filter or multi-cooling (PowerBase XLP), used for battery-buffered truck charging.
• PowerNode: introduced in September 2026, with a 500 kW conversion unit (PCS 500), a 261 kWh battery cabinet (PBC 261), an AC combiner and an all-in-one 125 kW / 261 kWh unit, so power and energy scale separately for multi-MW sites (PowerNode 500 announcement).

Residential and OEM

• Pixii Home: a 10 kW home battery with 10 or 20 kWh, in fan-filter and hybrid (PV) versions (Pixii Home).
• Building blocks: the PixiiBox, the Pixii Gateway and battery modules, sold to other system builders.

Software and services

The Pixii Energy Architect EMS and the Pixii webapp and Pixii Cloud cover control and monitoring. Services include commissioning, an RMA process, the Pixii Academy training site and service level agreements.

Technology

Every Pixii system is built on the PixiiBox 48/3300, a hot-swappable bidirectional converter with 3.334 kW of AC power, a 44 to 58 V battery range, an MPPT solar input of 100 to 380 V and a maximum grid efficiency of 96.9% (PixiiBox specifications). Three modules, one per phase, make the minimum three-phase system, and a PowerShaper cabinet holds up to 15. Batteries are 5.12 kWh lithium iron phosphate blocks in 3U rack units, used to 90% depth of discharge, with a stated life of 3,850 cycles at 1C or 5,800 cycles at 0.5C to 70% state of health (PowerShaper 50 kW datasheet page).

Control and interfaces

The Pixii Gateway runs PixiiOS and connects the cabinet to the outside world over RS-485, CAN bus, Ethernet, a Wi-Fi access point for local setup, USB and optional 4G. It speaks Modbus RTU, Modbus TCP, MQTT and HTTPS, can act as master over a cluster of cabinets, and accepts set points from a third-party EMS. The Energy Architect EMS is a Linux controller programmed in IEC 61131 (CODESYS) that adds DNP3, a REST API and OCPP for chargers, runs peak shaving, self-consumption, load shifting, arbitrage and frequency services, and keeps operating locally if the cloud connection drops. Pixii lists encryption, secure remote access and logical network segregation for it, without naming a security standard.

Standards

The product pages list IEC/EN 62477-1 for converter safety, cybersecurity under the Radio Equipment Directive from August 2025, IEC 62619, UL 1973 and UN 38.3 for batteries, and grid codes including VDE-AR-N 4105 and 4110, EREC G99, IEC/EN 50549-1 and AS/NZS 4777.2. The 50 kW page notes that several grid approvals currently apply to the PixiiBox, with approval of the complete system still in progress. Datasheets, manuals and configuration guides are sent by email after a form in the document center; no register map is published openly.

Customers

Stadtwerke Hünfeld

The municipal utility in Hünfeld, Hesse, runs Pixii's largest system: 12 PowerBase XL units on three 2.5 MVA transformers, 6.48 MW and 21.6 MWh, delivering frequency containment reserve, automatic frequency restoration reserve, energy trading and reactive power for the local grid. Pixii's August 2025 case study says it was built without an EPC contractor and is operated through an external EMS. Energynomics reported the same project in February 2025 at 6.41 MW and 21.62 MWh, alongside a second 540 kW / 1.39 MWh system at the town's wastewater plant paired with a 1 MWp solar park.

Milence

At IAA Transportation in Hanover in September 2026, a PowerBase XLP rated 1 MW / 2 MWh fed an Alpitronic HYC1000 megawatt charger for electric trucks. Pixii's case study reports more than 1 MW of charging from a 260 kW grid connection and says the system will move to Milence's Osnabrück hub. TRANSPORT described five Pixii battery cabinets buffering a grid connection of about 200 kW.

A2A E-Mobility

In Monza, Italy, two PowerShaper systems with 100 kWh of storage support five 300 kW DC chargers, one 14 kW AC charger and 11 kWp of rooftop solar, allowing 12 simultaneous charging sessions on a limited connection (August 2026 case study).

Elvia

The Norwegian network operator's 2020 pilot at Sjusjøen used two 65 kWh packs for peak relief, not backup, as Tek.no reported.

All outcomes above except the Elvia pilot and the trade press figures are company-reported.

Markets

Pixii sells into seven segments: distribution system operators, telecom and tower companies, commercial and industrial sites, EV charging, residential and real estate, microgrids and off-grid sites, and OEMs. Its value stacking page combines cost savings (peak shaving, arbitrage, self-consumption, backup) with revenue from frequency markets, local flexibility markets, wholesale trading and voltage support, generally reached through brokers, virtual power plants or EMS partners rather than a trading desk of its own.

Europe

Germany is the largest visible market, with the Hünfeld utility systems and the Milence truck charging project, followed by Italy, the Czech Republic and Norway. Pixii Home launched in Sweden in February 2024, according to pv magazine.

India

Pixii opened an office in New Delhi in October 2024. In May 2025 TVS Indeon, a subsidiary of Lucas TVS, agreed to deploy Pixii storage for commercial and industrial customers (Machinist). In July 2026 Havells India signed a memorandum of understanding that runs from pilot installations to a jointly developed all-in-one product and local assembly (Pixii; Power Line).

North America and Australia

Pixii Americas is based in Littleton, Colorado. In January 2026 the Canadian company Aegis Critical Energy Defence announced a partnership with it to supply batteries to Canadian telecom networks (Newsfile). Pixii also lists an off-grid EV charging project in the Australian outback among its projects.

Telecom sales lean on Enetek Power, which Pixii describes as a sister company within Eltek Holding.

Company

Pixii AS was founded on 6 March 2018 and entered in the Norwegian business register on 23 March 2018 under the name EH Tech AS, taking the name Pixii AS that May (Brønnøysund register). The register gives its business address in Kristiansand, where its only registered business unit is located, and records 43 employees as of October 2026. The website and recent press releases use an Oslo address, Sommerrogata 13-15, and the register's postal address is also in Oslo; this profile uses Kristiansand as the headquarters because that is the registered business address and was given as the company's base by pv magazine and Business Norway.

Ownership and funding

Pixii does not publish its shareholders. Its about page refers only to strong ownership, and its telecom page calls Enetek Power a sister company within Eltek Holding, which places Pixii in the same private ownership group. No venture rounds have been announced. The register shows share capital of NOK 2,268,654, last changed on 30 October 2025, with articles of association updated in August 2025; the company is not in liquidation or bankruptcy, and its most recent filed accounts are for 2025.

Recognition and growth

Deloitte's 2023 Technology Fast 50 placed Pixii first in Norway on four-year revenue growth (Energy Industry Review), and Innovation Norway and Export Finance Norway named it newcomer of the year in 2024 (Business Norway). The company holds ISO 9001:2015 and ISO 14001:2015 certification. Revenue for years after 2022 has not been published in the sources used here.