The biggest clean energy conference of the year ran June 1-4 in Houston. Eight thousand attendees. Five hundred exhibitors. The American Clean Power Association released Q1 data showing 6.4 gigawatts of new capacity added and a US total surpassing 370 gigawatts. Texas approaching 100 gigawatts alone.
On the same day the conference opened, Fluence Energy’s stock jumped 39.4% after it was named a core partner in a Siemens and Nvidia AI data center reference architecture. That is what the week looked like for clean energy and cleantech.
Fluence Energy Partners with Siemens and Nvidia on 136 MW AI Data Center Reference Architecture
June 1. Siemens, Nvidia, and Fluence Energy (Nasdaq: FLNC) unveiled a reference architecture for artificial intelligence data centers built around Nvidia’s DSX Vera Rubin platform. The design supports a 136 MW total facility with a 100 MW IT load, utility connections at 34.5 kV, and Tier III concurrent maintainability, meaning any component can be serviced without taking the facility offline. nVent Electric’s design standards are incorporated throughout.
Fluence’s SmartStack (a modular battery energy storage system designed for utility and commercial-scale deployments) sits at the center of the power architecture. The specific capabilities it provides: voltage and frequency ride-through (the ability to stay online during grid disturbances without tripping offline), black start (the ability to restart power delivery to the facility without external grid support), grid demand response, and AI load smoothing. Jeff Monday, Fluence’s Chief Growth Officer, said: “Our Smartstack platform is central to this new architecture, transforming the grid into an accelerator for compute.”
Fluence stock gained 39.4% in a single session on June 1. In the same period, the company confirmed it had signed master supply agreements with two major hyperscalers and expected to book its first order from one of them in the current quarter. Those are separate from the Siemens reference design but directionally consistent.
The reference design is not a binding contract. No revenue has been booked from this architecture. Barclays maintained an Equal Weight rating with a $16 price target after the announcement, noting it could represent a new sales channel without yet constituting committed revenue. Fluence completed a $420 million follow-on equity raise in May 2026, which provides liquidity but creates dilution risk for shareholders. The company reaffirmed fiscal 2026 revenue guidance of $3.2 to $3.6 billion with adjusted EBITDA of $40 to $60 million. Net loss in the most recent quarter was $29.2 million, improved from $41.9 million a year earlier. Filings on SEC EDGAR.
NU E Power Corp Signs Power Purchase LOI with Digital Asset Solutions in Alberta
NU E Power Corp. (CSE: NUE / OTC Pink: NUEPF) entered into a non-binding letter of intent with Digital Asset Solutions on May 27 for a power purchase and infrastructure partnership at the company’s Lethbridge 2 site in Alberta. DAS intends to establish a digital asset mining operation at the site, with NU E providing the power infrastructure.
The press release was May 27, five days before the primary coverage window. It is included given the scarcity of small cap cleantech news in the June 1-7 window. NU E Power is a very small CSE-listed company. The OTC Pink listing (the lowest tier of US OTC markets, with less regulatory oversight than OTCQB or OTCQX) means US investors should verify DTC eligibility and broker availability before attempting to trade. The LOI is non-binding. No financing or construction timeline has been disclosed. Filings on SEDAR+.
Alberta has been attracting digital asset and AI compute operations because of its established energy infrastructure and relatively low power costs. A power purchase agreement at a site already connected to the grid is the foundational step before any construction begins. This is early stage.
Upcoming Catalysts: Fluence Hyperscaler Orders, NeoVolta Georgia Ramp, TeraWulf Kentucky Construction
Fluence hyperscaler order: the company said it expects to book its first order from one of two hyperscaler supply agreement partners during the current quarter. Any announcement of a named hyperscaler contract, order size, or delivery timeline is the next meaningful catalyst from the Siemens reference design announcement.
NeoVolta Georgia production ramp: targeted for Q3 2026. First commercial output from the Pendergrass, Georgia facility converts the May 28 LOI with Infinite Grid Capital from a framework into a deliverable.
TeraWulf Muskie Kentucky construction: the 285-acre Eastern Kentucky campus is permitted and executing. Any site work commencement announcement or first HPC tenant signing would be the first commercial signal from the 1.5 GW Kentucky portfolio.
EIA monthly electricity data: the June 2026 Short-Term Energy Outlook projects record 43.4 GW of utility-scale solar additions in 2026. Monthly capacity addition updates will track whether that number is on pace.
Sources
- Siemens / nVent IR: Reference architecture press release, Siemens, Nvidia, Fluence, June 1, 2026
- Seeking Alpha: Fluence Energy up 39.4% on Siemens Nvidia AI data center collaboration, June 1, 2026
- Energy-Storage.News: Fluence and Siemens partner on Nvidia AI data centres, hyperscaler agreements confirmed, June 2026
- Fluence Energy IR: Q2 FY2026 results, guidance reaffirmation, May 6, 2026
- Newsfile Corp: NU E Power Corp LOI with Digital Asset Solutions, Lethbridge Alberta, May 27, 2026
- SolarQuarter / ACP: 6.4 GW new clean power added Q1 2026, US surpasses 370 GW, June 3, 2026
- EIA: Short-Term Energy Outlook June 2026, record 43.4 GW solar expected, Henry Hub $3.34/MMBtu
- Simply Wall St / Yahoo Finance: Fluence Energy Siemens Nvidia partnership analysis, June 2026
Editorial Disclosure
This roundup is based entirely on publicly available information including press releases, regulatory filings, and earnings disclosures. Securities discussed include Fluence Energy, Inc. (Nasdaq: FLNC) and NU E Power Corp. (CSE: NUE) (OTC Pink: NUEPF). aktiego.com has not received any compensation from any company mentioned, their management, investor relations representatives, or any third party. No staff member or principal of aktiego.com holds a position in any security mentioned at the time of publication. The Siemens, Nvidia, and Fluence Energy reference architecture announcement date is confirmed as June 1, 2026, via the nVent press release and Seeking Alpha reporting. The NU E Power Corp LOI with Digital Asset Solutions was announced May 27, 2026, five days before the primary June 1-7 coverage window; it is included given the scarcity of publicly traded small cap cleantech press releases within the window. Fluence Energy’s market capitalization is above the typical size threshold for this roundup and is noted accordingly. The Siemens reference architecture is not a binding contract and does not represent committed revenue for Fluence Energy; Barclays maintained an Equal Weight rating following the announcement. Fluence Energy completed a $420 million equity offering in May 2026, creating dilution risk. Fluence Energy reported a net loss of $29.2 million for the quarter ended March 31, 2026 and remains unprofitable. NU E Power Corp is listed on the OTC Pink tier, which has less regulatory oversight than OTCQB or OTCQX; US investors should verify DTC eligibility and broker availability before attempting to trade. The NU E Power LOI is non-binding. CLEANPOWER 2026 data referenced from the American Clean Power Association Q1 2026 report released June 3, 2026 and the EIA June 2026 Short-Term Energy Outlook. These are speculative investments carrying significant risk including potential total loss of capital. Coverage on aktiego.com is provided for informational and educational purposes only. aktiego.com is not a registered investment advisor. Nothing in this article constitutes financial, investment, or professional advice. Readers are encouraged to conduct their own due diligence and consult a qualified financial advisor before making any investment decisions. For more information please see our full DISCLAIMER.
