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Greece wants the artificial intelligence boom to arrive with its own clean power, and it is putting that expectation into law. The Ministry of Environment and Energy has published a draft bill that would require new data centers to source at least 60 percent of their annual electricity consumption from renewable energy, alongside tougher financial and grid-connection conditions. The draft, announced on October 10, is open for public consultation until October 24, 2026, and it has not yet become law, according to a policy digest of the proposal.
The rule is one piece of a wider electricity market bill, but data centers are its most visible target. Under the proposal, investors in new data center projects would carry the full cost of connecting to the grid, including any reinforcement of the power system caused directly by their connection, according to Enerdata’s summary of the ministry’s statement. That shifts the bill for network upgrades from the general system to the developers who trigger them. Data centers could meet the 60 percent requirement by connecting directly to nearby renewable generation and energy storage or by signing power purchase agreements, Balkan Green Energy News reported.
The reason for the bill is a sudden rush of interest. Applications to Greece’s Independent Power Transmission Operator (IPTO, or ADMIE) for data center connections rose from 5 gigawatts to 9 gigawatts in just two months over the summer, according to figures cited in Balkan Green Energy News. For context, that is more than the output of several large power stations, and grid operators cannot connect it all at once. The proposal tries to separate serious projects from speculative ones while making sure the demand does not undermine the country’s climate goals or push costs onto other electricity users.
The financial conditions are a notable part of that filter. The draft would require investors to submit letters of guarantee of €200,000 per megawatt of requested capacity, with a three-year duration, according to Balkan Green Energy News and W.Media. For a 100-megawatt project, that would mean €20 million in guarantees, which is meant to deter applicants who are only reserving grid space. W.Media added that applicants would face financial viability checks based on specific turnover requirements, and that investment and environmental criteria would be tightened before an applicant receives a definitive connection offer. In effect, a developer would need to show it has the money and a credible plan before it gets a place in the queue.
The process is also being clarified. IPTO would handle data centers above 10 megawatts, and the Hellenic Electricity Distribution Network Operator (HEDNO, or DEDDIE) would take requests below that threshold, according to the same report. When ready, the operator would give a developer a three-year connection offer, at which point the developer must submit a report with the project’s technical features and a power supply agreement. Large projects above 200 megawatts could receive priority in their connection, with caveats: the owner must establish that 80 percent of the electricity will come either from a distributed power producer or from energy storage with a six-hour injection duration.
Another provision addresses places where the grid is already stretched. The draft proposes flexible grid connection agreements in locations with insufficient capacity, under which grid operators could limit the amount of power a facility draws within set limits, Data Center Dynamics reported. That means a data center could be connected sooner, in exchange for accepting restrictions at times of peak demand or network stress. It would also create a data center registry run by the Regulatory Authority for Waste, Energy and Water (RAAEY) to track developments and improve transparency in the sector.
The 60 percent figure deserves a careful reading. TaiyangNews described it as a requirement on annual electricity consumption, which is an accounting measure over a year, not a guarantee that every hour of operation is powered by renewables. Spain took a stricter route, proposing in August that data centers source at least 80 percent of their electricity from new renewable generation on an hourly basis, according to Data Center Dynamics, and Australia has explored similar links between grid access and renewable use. Hourly matching is harder to meet because solar and wind output varies through the day, but it better ensures that clean power is actually available when the facility is drawing it. An annual target is easier for developers to reach and cheaper, though it can still leave a facility drawing on fossil power at night.
Data Center Dynamics also flagged a practical caveat. A 60 percent sourcing obligation, financial readiness requirements, bank guarantees and a national registry each depend on different underlying representations, and contracted renewable supply is not necessarily delivered renewable electricity. In other words, a company that signs a contract for renewable energy has met a paper requirement, but verifying that actual clean electrons were supplied is a separate matter. How the final law defines compliance, and how it would be audited, will determine whether the 60 percent target changes behavior or becomes a formality. The reports reviewed do not describe the verification mechanism.
Why does this matter beyond Greece? Because governments everywhere are wrestling with the same problem. Data centers, especially those built for AI, use large and growing amounts of electricity, and their appetite can crowd out other users or force utilities to build new plants. Greece, which has abundant solar and wind and a strategy to become a digital hub under its 2023 data center law, is trying to ensure that new demand is matched with new clean supply. The bill also includes a separate provision creating a €2.3 billion Island Decarbonization Fund to finance projects that reduce the Greek islands’ dependence on oil-fired electricity generation, which shows the government is linking energy transition goals with the grid pressures from new loads.
For investors, the proposal creates both a cost and a signal. The guarantee and the requirement to fund grid upgrades increase upfront expenses, which could deter weaker projects. At the same time, a clear rulebook can reassure serious developers that the queue is predictable, and the priority for large projects that bring storage or distributed generation encourages the kind of investment grid operators want. Companies with existing renewable portfolios or the ability to sign long-term power agreements are better placed to comply.
For other emerging markets, including countries in Africa where data center investment is rising, the Greek and Spanish drafts offer a template for how regulators might manage the trade-off between attracting digital infrastructure and protecting the grid. That is an observation about policy design, not a statement from the Greek government, and conditions differ widely between regions. What the proposals show is that connection conditions, financial guarantees and clean energy requirements are becoming standard tools.
What happens next is a process of consultation, amendment and parliamentary approval. Comments are due by October 24, after which the ministry can revise the text before submitting it to parliament. Details such as how renewable supply is verified, whether existing data centers are covered and how the guarantees will be refunded or forfeited could change. The ministry publishes its announcements on the Ministry of Environment and Energy website, and Data Center Dynamics has a summary in its report on the draft law.
Readers who follow global technology, energy and business stories can find more coverage at BusinessTech Nigeria. For now, Greece has put a number on what it expects from the companies that want to build its digital future, and the next two weeks of consultation will show how far the industry is willing to go.
