As Indonesia pushes toward digital transformation and sustainable energy, the conversation around solar-powered data centers is gaining traction. But there’s a common question, especially from those living in major urban hubs like Jakarta, Bandung, or Medan:
Can solar really power a data center in a city where cloudy days are frequent?
Let’s explore the realities, challenges, and possibilities.
☁️ Understanding the Cloudiness Concern
It’s true—many of Indonesia’s populous cities face high humidity, rainfall, and overcast skies throughout the year. Unlike desert regions where solar energy thrives, these conditions can cause fluctuations in solar panel efficiency.
But here’s the thing: solar technology has come a long way. Modern photovoltaic (PV) systems are now capable of producing electricity even during cloudy conditions—albeit at reduced efficiency, usually around 10–25% of their peak capacity.
⚡ Energy Demands of a Data Center
Data centers are energy-intensive. Power is consumed not only by IT equipment but also by cooling systems, UPS, lighting, and more. A mid-sized data center can easily consume hundreds of kilowatts per hour, making uninterrupted energy supply critical.
This is where hybrid energy models become essential.
☀️ The Hybrid Solution: Solar + Grid + Batteries
Instead of fully relying on solar, Indonesia can adopt a hybrid approach:
- Daytime: Solar panels generate energy, reducing reliance on PLN or diesel.
- Nighttime / Cloudy Days: Stored energy (batteries) or grid supply takes over.
- Smart Energy Management Systems ensure seamless transitions and optimal energy use.
This hybrid setup doesn’t just improve reliability—it also reduces carbon emissions and operational costs over time.
🌆 Urban Space Constraints and Creative Solutions
One major challenge in cities is limited rooftop space. Large-scale solar setups require significant surface area, and urban data centers often can’t spare that.
However, we’re now seeing creative adaptations:
- Solar carports in parking areas
- Vertical solar panels on building facades
- Remote solar farms connected via grid or private networks
Some providers are even exploring leasing space outside the city for solar farms while keeping operations in urban centers.
🇮🇩 How Feasible Is This in Indonesia?
Indonesia is in a unique position:
- It has high solar potential overall, especially outside Java.
- The government is pushing renewables, with a target of 23% renewable energy by 2025.
- Data center operators are under ESG pressure to decarbonize.
While cloudy cities pose a limitation, they’re not dealbreakers. With proper energy design, solar can be a significant contributor, even if not the sole energy source.
✅ Conclusion: Yes, But with a Smart Strategy
So—can solar-powered data centers work in cloudy cities?
Yes, but not in isolation.
A balanced, hybrid energy strategy is the key. With the right mix of solar, batteries, smart grid integration, and innovation, solar power can play a vital role in Indonesia’s sustainable data center future—even under the clouds.
Contact DataGarda to learn more!
