Enel Starts Building US$80 Million Battery at Chile Solar Farm
Chile · Energy
Key Facts
- Project Finis Terrae BESS is a battery energy storage system, a bank of batteries that stores power for later use.
- Owner Enel Chile and its renewable arm Enel Green Power Chile are building the project next to the existing Finis Terrae solar plant.
- Location The site is in the Antofagasta region, in Chile’s northern desert.
- Size The system will have 100 MW of power at the connection point. No storage capacity in MWh has been published.
- Cost The investment is about US$80 million.
- Status Construction has started, but no exact start date or commissioning date has been released.
Chile’s solar boom meets its missing piece: a big battery to save daytime power for the evening.
Enel has begun construction of an US$80 million battery system next to its Finis Terrae solar farm in Chile’s Antofagasta region. The project, called Finis Terrae BESS, will store solar power for use later in the day.
What is Finis Terrae BESS?
Finis Terrae BESS is a battery energy storage system, or BESS for short. Think of it as a giant rechargeable battery—a bank of batteries that stores electricity for when you need it most.
The project is attached to the Finis Terrae solar farm in the Antofagasta region, Chile’s northern desert. Enel Chile and its renewable energy unit, Enel Green Power Chile, are building it, adding storage to an already productive solar site.
The system will have 100 MW of power at the connection point. That means it can deliver up to 100 megawatts to the grid at any moment—enough to power roughly 70,000 homes, based on typical consumption.
One key detail is missing: the storage capacity in MWh. That figure would tell us how long the battery can keep delivering power, but the company hasn’t published it yet.
Without it, we can’t say if it will run for one hour or four.
Why does Chile need batteries?
Chile’s northern desert gets some of the strongest sunlight on Earth, especially in the middle of the day. Solar farms there can generate more power than the grid can actually use at that exact moment.
This oversupply is a real issue: the grid simply can’t absorb all that midday solar energy, so some of it goes to waste. Batteries are the fix—they let you save that surplus and dispatch it later, like when the sun sets and demand spikes.
That’s exactly what Finis Terrae BESS will do. It will charge up during sunny hours and discharge in the evening, shifting solar power to when it’s most valuable.
This makes solar more reliable and helps Chile reduce its reliance on fossil fuels for evening peaks. It’s not just about generating clean power—it’s about using it smartly.
Project details and current status
Enel has started construction on Finis Terrae BESS, but the company hasn’t released an exact start date. The investment is about US$80 million, a big but reasonable bet on storage in Chile’s booming solar market.
The project sits next to the existing Finis Terrae solar farm, a large photovoltaic plant that’s been running for years. By colocating the battery, Enel can store the farm’s output without building new transmission lines—a cost-effective approach.
The Antofagasta region is a prime spot for solar, with some of the highest solar radiation levels in the world. It’s also a region where grid congestion is a known challenge, making storage especially useful.
No commissioning date has been announced either. That’s when the battery will actually start operating and feeding power to the grid, so we’ll have to wait for Enel to provide a timeline.
What this means for Latin American investors and residents
If you live in Chile, you’ve probably seen energy prices swing wildly—sometimes electricity is nearly free at midday, then expensive in the evening. Batteries help smooth that, which could stabilize your bills and make renewables more reliable.
For investors, this project is a sign. Chile is aggressively building solar, but the grid’s limits are becoming a bottleneck.
Storage is the natural next step, and companies like Enel are moving first.
This isn’t just a Chilean story. Across Latin America, sunny countries like Mexico, Brazil, and Peru are watching how Chile handles its solar boom.
Success here could set a template for the whole region.
Battery costs have fallen sharply in recent years, making projects like this economically viable. As more come online, expect to see a ripple effect—more solar, less curtailment, and a more resilient grid from Patagonia to the Atacama.
Looking ahead
Enel hasn’t revealed more details about Finis Terrae BESS’s timeline, but construction is underway. The company may share more as the project progresses, including that elusive MWh figure and a commissioning date.
Without the MWh rating, it’s hard to estimate how long the battery will discharge. The 100 MW power rating is clear, but duration matters—a two-hour battery is very different from a four-hour one.
Observers will watch this project closely once it’s online. If it performs well, it could become a model for other solar plants in Chile and beyond, encouraging more investments in storage.
For now, the message is simple: Chile is moving to add storage to its solar boom, and Enel is leading with a concrete, sizable bet.
Frequently Asked Questions
What does BESS stand for?
BESS stands for battery energy storage system. It is a bank of batteries that stores electricity for later use.
Where is Finis Terrae BESS located?
It is located next to the Finis Terrae solar farm in the Antofagasta region of Chile.
How much power will the battery provide?
It will have 100 MW of power at the connection point. The storage capacity in MWh has not been published.
When will the battery start operating?
No commissioning date has been announced yet. Construction has started, but the exact start date is not public.
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Sources: latercera.com; theglobeandmail.com; df.cl; ess-news.com; bienesnacionales.cl
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