BESS Einbeck: Construction started in March 2025
We shape alternative energy solutions
51°18'29.88
9°34'0.84
Alternative energy solutions
Engineering expertise for a green and sustainable energy supply
SMA Altenso GmbH focuses on innovative PV-hybrid, off-grid, battery-based, and power-to-gas (hydrogen) projects. Our applications combine renewable energy sources with conventional power systems and, optionally, intelligent battery solutions. Customers benefit from our experience in complex system integration and over 40 years of SMA know-how in power conversion technologies.
As a young, diverse, and dynamic company, we are committed to shaping alternative energy solutions for future generations.
Alternative energy solutions
Your partner from project phase till operation and maintenance
We are an experienced international system integrator and EPC company, which has been successfully implementing turnkey BESS projects in Germany. We are significantly increasing our development efforts on international projects in collaboration with selected partners. Our overall offering is complemented by the provision of After Sales and O&M services.
Alternative energy solutions
We are the energy expert for various renewable integration
Battery solutions
Projecting, executing, and operating of large-scale battery systems (BESS)Learn more
Hydrogen solutions
Plug-and-play power conversion solutions for large-scale hydrogen (power-to-gas) applicationsLearn more
Off-grid solutions
Grid-forming system solutions for weak grids or completely grid-independent renewable integrationLearn more
Battery solutions
Hydrogen solutions
Off-grid solutions
Jobs
Shape your future with a career within Altenso
power for energy
We are a young, diverse, and dynamic team with more than 100 employees from over 20 nationalities. Together, we are driving the energy transition by delivering innovative projects worldwide. Our company, a wholly owned subsidiary of SMA Solar Technology AG, is based in Niestetal near Kassel, where hybrid working is a core practice. Check our open positions and apply now.
Key figures
We project, execute and operate globally
As an experienced international system integrator, we are working tirelessly to accelerate the energy transition. That is on our credit side:
- 1GW
currently in execution
- > 1.5GW
implemented large-scale storage projects
- > 1GW
delivered conversion power in hydrogen projects worldwide
References
Discover our various project references
100% solar power during the daytimeSolarBatteryReducing the need for gensets to power the island, grid stability as well as black-start from the batteries are the new features within the latest extension of this hybrid plant.
7 MWPower
RoleAC Integrator
The largest PEM electrolyzer plant in the USAHydrogenMobilityEquiped with 40 MW PEM electrolyzer capacity, the plant is designed to produce up to 15 tons of hydrogen (TPD) – enough to power approximately 15,000 forklifts per day.
40 MWPCU Capacity
ElectrolyzerPEM
Battery storage for ancillary servicesBatteryAncillary ServicesContracted with the detailed engineering, construction, and commissioning of this 26 MW battery storage plant, we commissioned and connected the plant to the medium voltage grid of Schleswig-Holstein.
26 MWBattery Power
- Role
EPC
Hydro power for hydrogen productionHydrogenIndustryThe 2.5 MW plant produces up to 350 tons of green hydrogen per year.
- 2.5 MW
PCU Capacity
- Electrolyzer
PEM
Green ammonia production based on solar powerHydrogenIndustryThis project is the first green ammonia plant for green fertilizer production in Europe.
- 20 MW
PCU Capacity
- Electrolyzer
PEM
News & Events
Stay up to date
Read the latest news and stay informed about company updates, events, webinars, and trainings worldwide. We look forward to meeting you.
Navigate to the Altenso newsroom.
Learn more
SMA Altenso and RheinEnergie codeveloping battery storage system projects
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The smarter E Europe 2025
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World Hydrogen Summit 2025
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Hydrogen Americas Summit 2025
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5th American Hydrogen Forum
Altenso celebrates ten years anniversary
Altenso sold greenfield battery project to strategic investor
Company
10 years 10 stories: colleagues share their individual experiences
"I started at SMA as an intern and quickly realized I wanted to be part of the company. A year later, I switched to a dual study program combining a bachelor's degree and international apprenticeship. I then joined SMA Altenso and gained valuable experience in the Commercial Project Execution. Today I work as Head of Commercial Services and collaborate on exciting projects with international customers and teams. I value being part of an international team that offers an inspiring environment for individual career development in a promising industry."
Cora SchneiderHead of Commercial Services"I'm Ranjeet, and I started at Altenso as a Project Engineer in 2020 after completing my master's thesis with them in 2019. After four years in engineering, Altenso supported my move into Sales with the role of Proposal Manager (BESS). The company's entrepreneurial culture and collaboration have been key to my growth. Working here since I was 23 has been a transformative journey, and I'm excited to continue growing and contributing to Altenso's success.”
Ranjeet DevckarSales & Business Development Manager“I'm Sarika, and I relocated to Germany in 2014 to pursue my Masters. During that time, SMA Altenso (formerly SMA Sunbelt) offered me an internship and the opportunity to write my thesis in Project Development. I later became a System Development Engineer and then Head of Application Engineering. Working towards a cleaner environment for my daughter, an excellent work culture and a passionate team. I invite you to join us in working on cutting-edge technology with brilliant minds.”
Sarika AgarwalHead of Application Engineering"With my experience from renewable energy industry, I could achieve great impact supporting the team in the collective fight on the energy revolution battlefield. It's a great enjoyment working in a team that fully respects humanistic care, with a clear idea of value and compelling operating strategy, and wonderful, enthusiastic teammates who bring top competence.”
Hanlin ZouSystem Development Manager"I worked with SMA Altenso from 2017 to 2022. After a brief time with another company, I realized how unique and team-oriented the work environment at Altenso is. As a result, I rejoined and later seized the opportunity to grow into the role of Commercial Contract Manager. I enjoy working at Altenso because of the motivated team and the flexible working options."
Jennifer LorkeCommercial Contract Manager“I've been with SMA Altenso since its founding in 2014 (formerly SMA Sunbelt) and was one of its Managing Directors. In 2018 I transitioned to part-time leadership responsibilities, being currently responsible as Head of Sales for all power-to-gas topics. I appreciate the flexibility at Altenso, the dynamic team, and our involvement in the innovative hydrogen market. Working here allows me to learn something new every day and grow both professionally and personally.”
Fabian JochemHead of Power-to-Gas Sales"I'm Bettina, and I started at Altenso as an apprentice before joining the Commercial Administration team. Altenso gave me the chance to understand the entire process, not just my own tasks. The positive atmosphere and strong team spirit made me feel right at home. If you're looking for challenges and enjoy international contact, this is the place for you. Working at Altenso means having a space where every question and idea is welcome."
Bettina HeiwigCommercial Administrator
Dive into Altenso
Learn more about our identity, leadership, and history.
Ten years of renewable energy projects
We invite you to explore our executed projects, current project pipeline, and unique team spirit in the latest SMA Sunny Blog
