In a major leap toward commercial fusion energy, Washington-based Helion has begun site work on its first fusion power plant, Orion. The move marks a defining moment for both Helion and its key partner, Microsoft.
In 2023, Helion signed the world’s first power purchase agreement (PPA) for fusion energy, committing to supply electricity to Microsoft once the plant is operational. Located in Chelan County, Washington, the site was selected for its easy access to power transmission and its legacy of energy innovation.
This project represents a significant step in Helion’s mission to bring fusion electricity to the grid by 2028. Constellation Energy will serve as the power marketer. Now, with construction efforts underway, Helion is staying on track to meet the 2028 target.
Helion’s Fusion Breakthrough: A Clean Energy Milestone
Fusion energy—the process that powers the sun—has long been viewed as the ultimate solution to the world’s energy needs. It offers virtually unlimited, clean energy without carbon emissions or long-lived radioactive waste. If Helion succeeds in delivering fusion electricity to the grid, it could mark a paradigm shift in how the world powers itself.
Over the past decade, Helion has built six fusion prototypes and made steady technical progress through rapid iteration and testing. Its sixth machine, Trenta, made history by achieving a fuel temperature of 100 million degrees Celsius—considered the minimum threshold for fusion to become commercially viable.
Now, Helion is constructing its seventh and most advanced prototype, Polaris. This machine is expected to go further than any before it: demonstrating not just fusion reactions, but also the first electricity produced directly from fusion.
Polaris: A Critical Step Toward Commercial Fusion
Polaris represents a major step in Helion’s roadmap to build a zero-carbon fusion generator. It will improve upon previous machines in several key ways:
- Higher Frequency Pulses: Polaris is designed to pulse faster than Trenta, allowing more frequent fusion reactions.
- Stronger Magnetic Fields: Enhanced magnets will provide improved plasma confinement, essential for sustaining the extreme conditions needed for fusion.
- Direct Electricity Generation: Unlike traditional fusion designs that rely on steam turbines, Polaris is built to demonstrate direct electricity generation from fusion reactions, a critical innovation for scalable deployment.
If successful, Polaris will become the first fusion machine—public or private—to show that fusion can generate electricity in a compact system. Its success will provide the foundation for Orion, the first commercial-scale plant aiming to deliver fusion electricity to Microsoft and the wider grid.
From Permits to Power: Orion Prepares to Energize the Grid
Helion began building the Orion facility on leased land from the Chelan County Public Utility District. The project cleared Washington’s rigorous environmental review process, receiving a Mitigated Determination of Non-Significance (MDNS) under SEPA guidelines.
Since 2023, Helion has actively collaborated with government agencies, Tribal Nations, and local stakeholders to prepare for the construction and operation phases. The company’s transparent approach to permitting and community engagement has helped smooth the path for the project.
After a one-year ramp-up period, the fusion power plant is expected to generate at least 50 megawatts (MW) of electricity. If successful, the Orion project could fast-track fusion’s role in global clean energy supply—years ahead of other industry projections.
- READ MORE: Google Backs Fusion Energy: Signs 200MW Offtake Agreement with Commonwealth Fusion Systems
Microsoft’s Energy Shift: From Solar to Fusion and Fission
Helion’s fusion energy isn’t the only clean power solution Microsoft is betting on. As the tech giant races to meet its ambitious climate goals to become carbon negative by 2030, it has also turned to traditional nuclear energy. The growing power demands of artificial intelligence (AI) and cloud computing have made constant, reliable energy a top priority.
While wind and solar remain crucial parts of Microsoft’s strategy but their intermittency creates challenges for powering massive data centers around the clock.
That’s where nuclear energy enters the equation. Microsoft has invested in multiple nuclear projects, including a 20-year PPA to purchase power from the restarted Three Mile Island nuclear facility in Pennsylvania. This deal alone will supply over 800MW of carbon-free electricity to Microsoft’s operations starting in 2028.
AI and the Rising Demand for Energy
Microsoft’s clean energy push is largely driven by surging electricity needs tied to AI development and cloud infrastructure. Industry analysts expect data center energy use to double by 2028, fueled by generative AI technologies and hyperscale computing. Between 2020 and now, Microsoft’s total energy use rose by 168%, driven by a 71% increase in revenue and significant expansion in its cloud operations.
At the same time, Microsoft’s emissions have gone up by 23.4% compared to its 2020 baseline. While this rise is modest relative to the company’s operational growth, it underscores the difficulty of decarbonizing at scale. Fusion and nuclear energy offer Microsoft a path forward—delivering stable, 24/7 clean electricity that wind and solar alone can’t guarantee.
Supporting Innovation and Clean Energy Leadership
The tech giant is becoming a leader in reshaping the nuclear and fusion energy industry. The company signed its first large-scale nuclear PPA with the Crane Clean Energy Center in 2024. That agreement will enable the restart of an 835MW nuclear plant in Pennsylvania, retired in 2019. The plant’s return will inject new clean energy into the PJM power grid, one of the largest in the U.S. and critical to Microsoft’s East Coast data centers.
By partnering with emerging fusion firms like Helion and supporting small modular reactor (SMR) projects, Microsoft is also fueling innovation in next-generation nuclear technologies. These efforts don’t just benefit Microsoft—they send a strong signal to markets, encouraging other corporations to invest in scalable, zero-carbon power solutions.
In fact, Microsoft’s influence is already visible across the energy sector. Its clean energy strategy is helping revive shuttered nuclear facilities, create local jobs, and guide public policy toward advanced carbon-free solutions.
Economic and Community Benefits
The economic ripple effects of Microsoft’s nuclear partnerships are expected to be substantial. Reviving plants like Three Mile Island will bring billions of dollars in investment and long-term job creation to surrounding communities. These projects also help maintain grid stability as power demand continues to grow.
Moreover, Helion’s Orion project could turn Chelan County into a global showcase for fusion innovation. If Polaris succeeds in producing electricity, Helion would not only lead the private fusion race but also bring global attention to the Pacific Northwest as a clean tech hub.
How Big Tech Is Reshaping the Clean Energy Landscape
Alongside Microsoft, Amazon, Google, and Meta are the hyperscalers driving renewable and nuclear energy adoption. As projected by S&P Global Insights, collectively, these tech giants have amassed more than 84 gigawatts of clean energy capacity across 29 countries. This scale is transforming global corporate energy markets, shifting clean energy from a sustainability perk to a business necessity.
Additionally, Microsoft has also joined influential advocacy groups like the Fusion Industry Association and the U.S. Nuclear Industry Council (USNIC), strengthening its voice in policy and industry discussions around the future of energy.
The partnership between Helion and Microsoft is more than a fusion pilot—it’s a turning point for nuclear energy innovation. As the Orion plant moves forward, it could accelerate the arrival of commercial fusion while giving Microsoft a reliable, zero-carbon energy source to support its rapidly growing AI infrastructure.
The post Microsoft (MSFT) to Get Fusion Power as Helion Energy Kicks Off Orion Plant Construction appeared first on Carbon Credits.
The accounting differences that decide whether your nature investment shows up in inventory, in BVCM, or nowhere at all.
The question reaches a procurement team about three weeks before the next sustainability committee meeting. Someone has read about insetting. Someone else has just signed off on an offset purchase. The CSO wants to know if the two are interchangeable. The answer is no, and the GHG Protocol Land Sector and Removals Standard is the reason why.
This article walks through what each term means at audit-grade specificity, what the standards actually say about how each gets counted, and how to decide which tool fits which target. The insetting vs offsetting question is one of the most-searched in corporate climate strategy, and one of the most poorly answered. By the end of this piece, you should be able to brief a committee on the difference without notes.
The two definitions, in plain English
Offsetting means buying carbon credits generated outside your value chain and retiring them against your residual emissions. The reduction happens somewhere else, financed by you, and the credit is the receipt.
Insetting means investing in emission reductions or removals inside your own value chain, typically with suppliers, where the reduction is directly linked to the products and services you buy. The reduction happens inside the boundary of your Scope 3 inventory, and the accounting treatment is fundamentally different.
The shorthand from the University of Oxford’s Nature-based Insetting Initiative is useful: insetting is what you do with the supply chain you have; offsetting is what you do with the supply chain you do not have.
What the GHG Protocol Land Sector Standard actually says
The GHG Protocol Land Sector and Removals Standard, finalised in 2024 after a multi-year pilot, sets the rules for how land-based emission reductions and removals enter corporate inventories. The Standard distinguishes between inventory accounting (Scope 1, 2, and 3) and project or intervention accounting (a separate methodology for crediting).
For insetting, the practical implication is that supplier-level interventions, when properly measured and attributed, can reduce your Scope 3 category 1 (purchased goods and services) emissions in your inventory. The reduction is not a credit retired against the inventory; it is a lower inventory number, period.
For offsetting, the credit is retired separately. It can be reported as a contribution toward a net-zero claim under the SBTi Beyond Value Chain Mitigation framework or as part of a VCMI Carbon Integrity claim, but it does not lower the inventory number.
A practical consequence: if your Science Based Target requires a 50% absolute reduction in Scope 3 emissions by 2030, insetting moves you toward the target. Offsetting does not. This single point of difference reshapes the procurement decision.
When insetting counts toward Scope 3 (and when it does not)
Insetting counts toward Scope 3 only when several conditions are met:
- The intervention must occur with an entity in your value chain.
- The emissions reduction or removal must be measured against a defensible baseline.
- The reduction must be attributed to your share of that supplier’s output, not double-counted with other buyers.
- It must follow the inventory accounting rules in the GHG Protocol Land Sector Standard, not the project accounting rules used to generate credits.
The most common failure mode is double counting. If your supplier sells the same reduction as a credit on the voluntary market and also reports it to you as a Scope 3 reduction, the math breaks. The Standard requires you to address this risk, typically by purchasing and retiring the supplier-issued credit as part of your inventory or by contractual provisions that prevent the supplier from selling the reduction twice.
When insetting does not count toward Scope 3: when the intervention sits with a supplier you do not buy from, when the baseline is not defensible, when the attribution is unclear, or when the documentation does not survive audit. Those cases default to Beyond Value Chain Mitigation, which is still useful but operates on a different ledger.
The procurement and supplier engagement question
Insetting is harder than offsetting. That is the unfashionable truth most buyers eventually confront. Offsetting is a transaction; insetting is a relationship.
To run an insetting program, you need supplier mapping precise enough to know which farms or facilities sit at which Scope 3 boundary. You need an engagement model that gets suppliers to participate, which usually requires multi-year commitments and shared economics. You need an MRV architecture that measures the right things and produces audit-ready documentation. And you need a contractual structure that prevents double counting and protects both sides.
The trade-off you receive in return is significant. Reductions count against your inventory rather than your residual. Supplier relationships deepen, which protects sourcing continuity. Yield and quality improvements often follow regenerative interventions, which reduces your input cost over time. And the regulatory file, under CSRD, CSDDD, EUDR, and the SBTi FLAG Guidance, is materially stronger.
Choosing the right tool for the right target
A practical decision rule. If your target is a science-based Scope 3 reduction and you operate in a FLAG sector or source FLAG commodities, insetting is the structurally correct tool. If your target is a net-zero claim that includes neutralising hard-to-abate residual emissions outside your value chain, BVCM via high-integrity offsets is the structurally correct tool. Most companies with material Scope 3 exposure need both, in different proportions, sequenced over time.
The sequencing matters. Insetting takes longer to stand up but produces a permanent reduction in the inventory. Offsetting can be transacted faster but does not change the inventory and now sits under tighter claim restrictions. Treat them as complementary tools with different jobs, not as substitutes. The Accountability Framework Initiative and the IUCN Global Standard for Nature-based Solutions both provide useful guardrails for the insetting side, with biodiversity, human rights, and benefit-sharing requirements that go beyond carbon math.
If you are mapping a Scope 3 reduction roadmap and need to scope which interventions count toward your inventory versus which sit in Beyond Value Chain Mitigation, the carbon and sustainability experts at Carbon Credit Capital can help you structure a nature-based supply chain investment program that fits your FLAG exposure, your target architecture, and your audit horizon. Schedule a consultation.
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