Ingeteam: Power electronics for wind, solar PV, battery storage and grids

Overview

Ingeteam grew out of TEAM, an engineering company set up in Bizkaia in 1972 by four engineers who had come back from postgraduate study in Germany: Javier Madariaga, Víctor Mendiguren, Miguel Gandiaga and Alberto Belaustegui. TEAM later merged with Ingelectric to form Ingeteam, as the coverage of the group's 50th anniversary in October 2022 recounts. The group now speaks of more than 85 years in the electricity sector on its company page, which takes in the Indar electric machine business it owns.

The company's history follows the energy transition step by step. It began developing hydroelectric generation control in 1984, specialised in turbine regulation and hydro plant automation in the 1990s, introduced variable-speed machines for wind in 1995, moved into wind power electronics in 2000 and photovoltaic inverters in 2001, started energy storage research in 2009, EV charging in 2010 and a green hydrogen business in 2021. In 2014 it built a 9 MWh utility-scale battery installation attached to a PV plant, which it describes as its first.

What sets Ingeteam apart from most inverter makers is that it builds both halves of the electrical chain. The about page lists submersible motors, generators and pumps beside power electronics, automation, protection and control, and digital technologies, and the group serves wind, PV, hydro, battery storage, smart grids, rail traction, EV charging, marine, steel, mining, green hydrogen and water. A wind turbine can carry an Indar generator and an INGECON converter, and a PV plant an Ingeteam inverter, power station, plant controller and maintenance contract. The group exports more than 80% of its production, according to its 2022 strategic plan.

Offering

Solar PV

Ingeteam's PV range runs from home inverters to utility power stations. The newest utility product is the INGECON SUN 300TL, a 300 kW string inverter with one MPPT for 1,500 V plants, 99.05% maximum efficiency, IP66 and Wi-Fi with Single Pair Ethernet for daisy chains up to 1,000 m, launched in May 2026. Central inverters and skid-mounted PowerStation FSK units carry larger plants.

Battery storage

The INGECON SUN STORAGE 1Play TL M is a single-phase hybrid inverter in 3, 4.5 and 6 kW ratings with two MPPTs, backup and an EMS inside. The INGECON SUN STORAGE 100TL is a transformerless three-phase battery inverter for commercial and industrial self-consumption, rated 100 kW discharge and 60 kW charge with a 627 to 850 V battery range and a five-year warranty extendable to 25 years. Ingeteam does not sell the batteries: it publishes a list of approved lithium-ion batteries for the 100TL.

For utility storage, the FSK C Series HV skid puts two battery inverters, a transformer and switchgear on one base, and the INGECON SUN STORAGE M Series, announced in July 2026, builds central inverters from 1.14 MVA power modules: the 3Power M up to 4.54 MVA and the PowerStation FSK M up to 9.08 MVA.

Wind and other businesses

The INGECON WIND converter range includes a medium-voltage full converter served offshore turbines up to 15 MW in 2022, with two parallel lines aimed at 18 MW. The product list also covers EV chargers, FACTS, onshore power supply for ships, SCADA, condition monitoring, motors, generators and pumps.

Services

Operation and maintenance is a business of its own: Ingeteam maintained more than 11.5 GW of PV plants in 2023, according to Energías Renovables, and its 2022 plan counted more than 1,300 people in global operations and maintenance across 20 countries. Commercial and residential inverters are sold through official distributors; utility plants are quoted per project.

Technology

Ingeteam's storage inverters are open about their data. The 100TL input-register document defines the online data as Modbus input registers read with function 04 and numbered from 30001: inverter status, alarms and stop events, grid voltages, currents and frequency, active, reactive and apparent power, DC power, isolation resistance, battery temperature and state of charge. The installation manual names Modbus TCP on port 502 with the inverter on node 1; RS-485 is not standard and needs the optional AAX7051 kit. The battery talks to the inverter over CAN Bus 2.0, and only batteries on Ingeteam's approved list are supported.

The 1Play register map, now at revision K, covers battery voltage, current, power, state of charge and health, PV, grid and load power, temperatures and status, and records the firmware version from which each register exists. Its manual asks for a single client on port 502, no more than one request a second and no more than 10 registers per request; the inverter's RS-485 port is reserved for its own wattmeter.

Sites with several inverters can run the built-in INGECON SUN EMS on a master unit. The EMS Gateway specification serves plant totals (grid, PV and battery power, battery state of charge and status flags) as Modbus TCP input registers on port 522, and accepts control modes and setpoints in holding registers. Monitoring runs through the INGECON SUN Monitor app.

At utility scale, the M Series supports batteries up to 1,500 Vdc without derating, reports 98.9% maximum efficiency and runs grid-following or grid-forming, with frequency regulation and synthetic inertia among its grid services. The wind converters use high-voltage IGBTs, a technology Ingeteam also uses in traction and marine propulsion. Ingeteam Power Technology, the group's centre for electronic equipment and software, is a member of the EtherCAT Technology Group.

Security is the weak point on record. Spain's national CERT published CVE-2026-8072 on 12 May 2026, rated critical with a CVSS 4.0 score of 9.2: the INGECON SUN EMS Board generated its local technical-support credentials with a weak hashing scheme. The fixed firmware was developed in December 2025 for ten firmware lines, including ones with the ABH and ABS codes of the 1Play and 100TL documents. Ingeteam publishes no product security policy of its own.

Customers

Ingeteam's largest published references are utility solar and storage plants. Grenergy, the Spanish developer, has worked with it since 2016 on projects totalling 3.5 GW in Chile, Spain, Mexico and Colombia. In June 2025 Grenergy bought another 1 GW of inverters for phases 4 and 6 of Oasis de Atacama, a 2 GW PV and 11 GWh battery complex in Chile, taking Ingeteam's share to 2 GW: 610 inverters, 410 of them for batteries and 200 for PV, in 305 energy transformation centres, with the power plant controller and commissioning.

In Australia, the integrator Jinko ESS uses Ingeteam equipment for about 65 MW and 130 MWh of storage across Victoria, New South Wales and South Australia, according to Renewable Energy Magazine in October 2026. The standalone batteries use the FSK C Series HV at 4.986 MVA AC, with two inverters on one skid, and the DC-coupled hybrids combine a central PV inverter with 16 DC-DC converters per site.

The 2023 review in Energías Renovables lists further plants without naming every owner: inverters for the 1.2 GWp Noor Abu Dhabi plant, a 590 MW plant described as Europe's largest, 856 MW and 504 MW plants in Australia, a 70 MW and 340 MWh battery in Italy, and the first Spanish PV plant with batteries, at 5 MW and 20 MWh. On the wind side, Ingeteam's converters and generators had been fitted to more than 78 GW of turbines by December 2023, with more than 32,000 converters and 34,000 generators built, according to the same publication.

Markets

Ingeteam sells worldwide and makes most of its sales outside Spain: 82% of its business in 2018, according to Windtech International, and more than 80% of production exported in 2022. Its contact page lists sites in Australia, Brazil, Chile, China, the Czech Republic, France, Germany, India, Italy, Mexico, Poland, Spain, Thailand, the United Kingdom and the United States, where it has a plant in Milwaukee.

Manufacturing is concentrated in Spain, with plants in Bizkaia, Gipuzkoa, Navarre and Albacete, and abroad in Milwaukee, Brazil, Mexico and India, as the anniversary coverage records. Wind converters and generators are built in Sesma in Navarre and Beasain in Gipuzkoa, each in operation for more than 25 years, and in Milwaukee, Chennai and Campinas, with production capacity above 21 GW a year in 2023.

The solar and storage business sells to developers, EPC contractors and integrators for utility plants, and through distributors for commercial and home systems. Australia has had an Ingeteam subsidiary in North Wollongong for more than a decade with local service and technical support, according to Renewable Energy Magazine. In its home market Ingeteam claims that more than 35% of Spain's renewable generation reaches the grid through its technology.

Beyond renewables, its sectors are hydro, transmission and distribution, rail and mobility, marine, metals and mining, water and flexible power generation. Its 2022 plan grouped these into seven business sectors, one of them Solar PV, BESS and Green H2, and today's executive team has a business head for each, Ana Goyén for Solar PV and BESS.

Company

Ingeteam, S.A. is registered in the Commercial Registry of Bizkaia, with a registration date of 21 March 1990, according to its shareholders page, which also names Ingeteam Corporación S.A. in its legal notice and publishes the notices of the annual general meetings and a non-financial report for 2024. The group's main Spanish address is the Bizkaia Technology Park in Zamudio, near Bilbao, at buildings 104 and 106. The shareholders are not published.

Teresa Madariaga Zubimendi chairs the board, and Adolfo Rebollo is chief executive. The executive team also lists David Solé as chief business officer, Alberto Guerrero for technology and innovation, Peio Pagola for operations, Carlos Martínez for corporate services and Arturo Córdoba as chief financial officer, with seven business heads.

Ingeteam does not publish its accounts on its website. Its last reported turnover in the trade press was €637 million for 2018, 47% more than in 2016, with €84 million spent on R&D under the plan, as Windtech International reported. The 2022 to 2024 strategic plan aimed at turnover of nearly €1 billion in 2024, an order book above €800 million at its launch, €210 million of investment of which €140 million in R&D, and a workforce rising from 4,100 to 5,100. The group has spent around 5% of turnover on R&D for decades and received a €46 million European Investment Bank loan for research and innovation, according to Energías Renovables.

The company's own figures for its size disagree: the home page gives more than 4,000 people across 15 countries, while the about page gives both more than 4,000 people and more than 3,800 employees, with more than 500 in R&D. Ingeteam Power Technology, the electronics company, carried the name Ingeteam Technology from 2007 and its present name from 2011, according to its EtherCAT member listing.