St. Croix refinery peninsula could host 6 MW of vertical wind turbines, paired with 6 MW of solar and batteries

The U.S. Virgin Islands is seeking clean energy solutions by pairing wind, solar, and battery storage systems.

The territory primarily still relies on fossil fuels for power generation, falling significantly short of federal climate targets.

To break this historic carbon-intensive reliance, a major hybrid project has been proposed.

The success of the proposed facility will offer a replicable framework for other island territories seeking storm-resistant, decentralized renewable power.

St. Croix would host the new development to boost grid reliability and lower electricity costs.

Will this planned facility help the region raise local resilience?

How remote island regions face challenges in decarbonizing

As climate change accelerates, global pressure to mitigate its effects has intensified.

Replacing fossil fuels in power generation is key, and renewable energy sources are the valuable assets required to unlock resilience.

Despite this clear path, it is not straightforward for everyone.

Remote island regions struggle to transition to green energy due to several structural and geographic hurdles.

The U.S. Virgin Islands exemplify this challenge.

The islands are located 1,000 miles from the U.S. mainland.

The territory relies on an isolated power grid that cannot connect to the regional mainland power networks.

Without physical grid connections, supply and demand cannot be balanced by importing excess electricity from neighboring regions.

Consequently, the U.S. Virgin Islands almost exclusively rely on imported fossil fuels for power generation.

Propane accounts for roughly 60% of electricity supply, while heavy fuel oil generates another 37%.

This results in average annual emissions of roughly 13 metric tons of carbon dioxide equivalent per capita.

Imported fossil fuels: From environmental to economic costs

While fossil fuel imports create a heavy carbon footprint, they also expose the territory to volatile global market spikes.

Electricity in the U.S. Virgin Islands costs approximately $0.33 to $0.42 per kilowatt-hour. This is nearly triple the U.S. national average.

Furthermore, a heavy reliance on fossil fuels directly conflicts with broader climate regulations.

Federal mandates target complete carbon-free power across government operations by 2035.

At the same time, territorial targets aim to reduce fossil fuel consumption by 60%.

To overcome these hurdles, localized renewable energy and storage solutions must be rapidly deployed at a large scale.

St. Croix is now being targeted to host a massive green energy project.

Wind Harvest and Port Hamilton Refining & Transportation signed a letter of intent for the project.

The Wind Harvest – St. Croix agreement details the proposal planned for the refinery’s Coke Dock Peninsula.

The industrial site will feature a hybrid facility paired with battery storage.

Pairing wind with solar and storage systems

Hybrid wind-solar projects paired with battery systems are becoming increasingly popular.

In St. Croix, the refinery’s Coke Dock Peninsula has optimal wind and solar exposure.

That is why the proposed facility will combine 6 MW of vertical-axis wind power with 6 MW of solar power.

The large-scale integrated battery energy storage system will then store excess clean power.

Vertical-axis wind turbines were chosen for their closer proximity to the ground compared to traditional models.

This enables capturing strong trade winds with increased resistance to Category 5 hurricane-force gusts.

The benefits of localized clean power facilities

The hybrid facility will help lower industrial and regional energy expenses.

The particular combination will provide steady, dispatchable electricity to stabilize the local grid.

It will also boost local job creation.

Additionally, the compact vertical-axis wind turbines require a smaller land area.

They also feature slower-moving, highly visible blades, which reduce collision risks.

Following the project’s Letter of Intent, formal planning and early development are currently underway.

In 2025, environmental baseline evaluations began to ensure ecological compliance. This includes localized wildlife and bird impact studies.

The success of the proposed facility will offer a replicable framework for other island territories seeking storm-resistant, decentralized renewable power.

Ultimately, combining clean energy sources with large-scale battery systems is key to raising local resilience.