From Meta to Mars: The Top 5 Global Corporate Buyers of Clean Energy

The global clean energy market is seeing a clear shift from supply-side growth to demand-side leadership, with large corporates emerging as the biggest buyers of solar and renewable power. As electricity demand rises and sustainability goals become more urgent, corporate procurement of clean energy has gathered strong momentum worldwide.

This demand is becoming increasingly concentrated among hyperscale technology firms. In 2025, Meta, Amazon, Google, and Microsoft together accounted for 49 percent of global clean energy procurement activity, highlighting how strongly the market is being shaped by a handful of major buyers.

Among them, Meta and Amazon stood out as the top global purchasers, together contracting 20.4 GW of clean energy capacity, including 4.7 GW of nuclear power. While Meta’s buying remained heavily focused on the United States, Amazon was the most active corporate buyer across Europe and the Asia Pacific region.

Below is a structured look at the top five biggest solar and renewable energy offtakers in the world in recent years, based strictly on the data provided.

#1 Meta

Meta emerged as one of the most aggressive clean energy buyers globally, with its 2025 procurement heavily focused on the US market and made up predominantly of solar. The company accounted for more than 8 GW of solar procurement in 2025 alone.

Its clean energy push is closely linked to its emissions goals. Meta is aiming to reduce Scope 1 and 2 emissions by 42 percent in 2031 from a 2021 baseline, while also restricting its 2021 baseline Scope 3 emissions by the end of 2031.

As of September 2025, Meta had contracted more than 29 GW of new clean and renewable energy globally, placing it among the world’s largest corporate buyers of new clean energy.

Recent agreements further underline the scale of its activity. Meta signed a power purchase agreement with ENGIE North America, taking their renewable energy collaboration to more than 1.3 GW across four projects in Texas. It also signed a PPA with Enbridge to procure 600 MW from the Clear Fork solar project in Texas. In January this year, Meta announced an agreement for up to 6.6 GW of new and existing clean energy by 2035.

#2 Amazon

Amazon ranked among the biggest global corporate clean energy buyers, with a more diversified procurement profile than Meta in 2025. The company contracted about 4 GW of solar energy, 2 GW of wind energy, and nearly 4 GW of nuclear power during the year.

Its deal activity stretched across multiple regions. Key agreements included a 472 MW onshore wind PPA with OX2 in Sweden, a set of PPAs totalling 476 MW with Iberdrola in Spain, and two solar PPAs in Japan.

According to company data, as of February 2026, Amazon’s clean energy portfolio spanned more than 700 projects across 28 countries. This includes four nuclear power agreements, 11 utility-scale battery storage projects, more than 300 utility-scale solar and wind farms, over 300 onsite solar projects, and six offshore wind farms in Europe.

Amazon said it is investing in more than 40 GW of carbon-free energy globally. In India, Amazon India is set to establish a 300 MW hybrid wind-solar project in Madhya Pradesh and Karnataka.

#3 Google

Google remains one of the largest corporate buyers of renewable energy globally, with its procurement strategy accelerating sharply in recent years. In 2025, Google contracted 4,181 MW of clean energy.

Since 2010, the company has signed more than 170 clean energy agreements totalling over 22 GW of capacity. These agreements span North America, Europe, Asia Pacific, and Latin America.

As of early 2026, Google had secured over 2.2 GW of solar capacity through major partnerships. This includes 1 GW in Texas through TotalEnergies and another 1.2 GW through Clearway to help power its data centres.

Google’s long-term procurement trajectory shows how the company has built a broad international portfolio while continuing to expand solar-led capacity additions.

#4 Microsoft

Microsoft also remained one of the leading clean energy buyers in 2025. According to the Bloomberg report cited in the data, the company added more than 2 GW of clean energy during the year. Solar accounted for more than three-fourths of that total, with the rest coming from wind power.

Its procurement covers a broad range of clean energy technologies, from solar to hydro. In February 2026, Microsoft announced that it had met its 2025 renewable energy goal of matching 100 percent of the electricity used by all its datacentres, buildings, and campuses by 2025.

The company has contracted to add 40 GW of renewable energy to the grid. Of this, about 19 GW was online as of February this year.

Microsoft’s clean power strategy reflects both scale and diversity, with a large share of recent additions coming from solar.

#5 Mars

Mars rounded off the top five list of the biggest renewable energy buyers in the world in 2025 with over 1 GW contracted in 2025, as per Bloomberg. While not in the same hyperscale technology category as the others, the company expanded its renewable procurement footprint significantly through a number of new contracts.

In October 2025, Mars signed its first Renewable Acceleration contract in Europe in partnership with GoldenPeaks Capital to cover direct operations in support of its 100 percent renewables commitment.

More recently, the company announced a contract with investment manager Foresight Energy Infrastructure Partners to secure the majority output of a large-scale wind farm in Sweden. This was described as one of Mars’ largest renewable energy commitments in Europe to date.

Mars also launched its Renewable Acceleration programme in 2025, beginning with Enel North America as its first energy partner. This was followed by a deal with GoldenPeaks Capital to launch more than 100 new solar projects in Poland.

Why These Companies Matter

The top five companies show how corporate clean energy demand is being driven by a mix of sustainability targets, data centre growth, and long-term electricity planning. Meta, Amazon, Google, and Microsoft are not only among the largest buyers, but are also shaping the direction of the market through the scale and structure of their procurement. Nearly half of the global corporate market was driven by just four companies.

A Temporary Downturn in the Market

Despite the strength of top corporate buyers, the wider market saw a slowdown in 2025. Global clean PPA volumes declined for the first time in nearly a decade as power prices and policy risks reshaped activity.

Corporations announced deals for 55.9 GW of clean power in 2025, marking a 10 percent fall from the record level set in the previous year, according to BloombergNEF’s 1H 2026 Corporate Energy Market Outlook.

This indicates that while leading corporates continued to sign large deals, the broader market became more cautious.

Supply-Side Trends Also Shifted

On the supply side, Engie emerged as the top developer, contracting 3.6 GW globally. The market also showed rising interest in clean, firm power solutions.

Seven of the top 10 sellers participated in such power contracts, including co-located solar and storage, hybrid solar and wind, or nuclear PPAs. These baseload-like products accounted for 5.2 GW of activity.

This suggests that the market is no longer focused only on standalone renewable generation, but is increasingly moving towards more balanced and reliable clean power structures.