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100Kwh-runny-24x7-solar and BESS calculations

How to Choose Solar Panels and Batteries to Run a 100kWh Load 24/7: Full Guide with Examples

June 16, 2025/6 Comments/in Energy Storage Sysytem/by Rahul Jalthar

If you’re planning to power a 100kWh load continuously (24/7) using solar panels and a battery energy storage system (BESS), it’s not as simple as just multiplying watts. You need to factor in weather conditions, seasonal sunlight availability, cloudy days, and energy efficiency. This blog will guide you step-by-step on how to size your system […]

How Safe Are Sodium-Ion Batteries? Key Safety Advantages Explained

June 15, 2025/0 Comments/in Battery Cells, Energy Storage Sysytem, Renewable Energy/by Rahul Jalthar

Why Sodium-Ion Battery Safety Matters for Businesses When companies invest in energy storage, safety is often the top priority. Incidents with lithium-ion batteries—fires, thermal runaway, and compliance hurdles—have pushed businesses to seek safer alternatives. This is where sodium-ion battery safety stands out. Sodium-ion batteries are designed with superior thermal stability, reduced fire risks, and simpler […]

How to Choose Solar Panels and Batteries to Run a 100kWh Load 24/7: Full Guide with Examples

June 16, 2025/6 Comments/in Energy Storage Sysytem/by Rahul Jalthar

How Safe Are Sodium-Ion Batteries? Key Safety Advantages Explained

June 15, 2025/0 Comments/in Battery Cells, Energy Storage Sysytem, Renewable Energy/by Rahul Jalthar

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How to Choose Solar Panels and Batteries to Run a 100kWh Load 24/7: Full Guide with Examples

June 16, 2025/6 Comments/in Energy Storage Sysytem/by Rahul Jalthar

If you’re planning to power a 100kWh load continuously (24/7) using solar panels and a battery energy storage system (BESS), it’s not as simple as just multiplying watts. You need to factor in weather conditions, seasonal sunlight availability, cloudy days, and energy efficiency. This blog will guide you step-by-step on how to size your system properly using formulas, examples, and visual data.

📌 What You’ll Learn:

How to calculate required solar panel capacity
Why yearly weather data is critical
How to handle cloudy days and winter months
Battery sizing for different backup durations
Example formulas and real-world values

🔧 Step 1: Understand Your Load

Let’s say your system must support a 100 kWh per hour load.

24 hours/day × 100 kWh = 2,400 kWh per day
That’s your daily energy demand from solar + battery.

🌍 Step 2: Analyze Your Location’s Solar Irradiance

Your geographic location heavily influences how much sunlight you receive—measured in Peak Sun Hours (PSH).

Location	Peak Sun Hours
Phoenix, USA	6.5 PSH
New Delhi, India	5.5 PSH
London, UK	2.8 PSH

👉 You can get this data from tools like PVWatts, NASA SSE, or Solcast.

🧮 Step 3: Calculate Required Solar Panel Capacity

Formula:

textCopyEditRequired Solar Capacity (kW) = Daily Load (kWh) ÷ (PSH × Derating Factor)

Daily Load = 2,400 kWh
Derating factor (system losses) = ~0.8

Season	PSH	Required Solar Capacity
Summer	6.5	2,400 ÷ (6.5 × 0.8) ≈ 462 kW
Winter	4.0	2,400 ÷ (4.0 × 0.8) ≈ 750 kW
Cloudy Days	2.5	2,400 ÷ (2.5 × 0.8) ≈ 1,200 kW

Solar panels required for 100KWh running 24/7

🌥️ Why Consider Cloudy Days?

Even if your area has high annual irradiance, you’ll still face days with poor sun exposure. For mission-critical applications, your system must:

Be oversized for worst-case scenarios.
Include battery backup for 1–3 days.
Use hybrid systems (e.g., gensets or grid backup) if needed.

❄️ Considerations for Winter Months

Winter brings:

Lower sun angles
Shorter daylight
Snow cover (for northern regions)

???? This reduces effective PSH and increases your dependence on storage or supplemental power.

⚡ Step 4: Size the BatteryEnergy Storage System for Backup

Battery Energy Storage System should store enough energy to power the load during non-sunny hours or failures.

Formula:

textCopyEditBattery Capacity (kWh) = (Daily Load × Days of Autonomy) ÷ (DoD × Efficiency)

Daily Load = 2,400 kWh
Depth of Discharge (DoD) = 0.8
Round-trip Efficiency = 0.9

Backup Duration	Required Battery Capacity
1 Day	2,400 ÷ (0.8 × 0.9) ≈ 3,333 kWh
2 Days	4,800 ÷ (0.8 × 0.9) ≈ 6,667 kWh
3 Days	7,200 ÷ (0.8 × 0.9) ≈ 10,000 kWh

Battery Backup required for 100Wh 24/7 Running

✅ Tips for Choosing Solar Panels

✔️ Use Tier-1 panels with high efficiency (≥21%)
✔️ Consider bifacial panels if space allows
✔️ Use anti-reflective coating for dust-heavy areas
✔️ Install with adjustable tilt for seasonal optimization

✅ Tips for Choosing Batteries Cells for BESS

✔️ Choose Lithium Iron Phosphate (LFP) for safety and long life
✔️ Look for modular scalability
✔️ Integrate with a good BMS and EMS
✔️ Use temperature-controlled enclosures for extreme climates

🔄 Hybrid Solutions for Reliability

When powering a 100kWh continuous load, consider a hybrid setup:

???? Solar + Battery + Diesel: For industrial backup
???? Solar + Grid + Battery: For grid-tied systems
????️ Solar + Wind + Battery: For off-grid redundancy

📊 Real Use Case Example

Scenario:

Location: Northern India
PSH (winter): 4 hours
Load: 100kWh × 24 = 2,400kWh/day
Solar Size = 2,400 ÷ (4.0 × 0.8) = 750 kW
Battery for 2 days = 2,400 × 2 ÷ (0.8 × 0.9) ≈ 6,667 kWh

🧠 FAQs

Q: Can I go without batteries?

A: Only if your load is flexible or you remain connected to the grid.

Q: Should I oversize the battery or the solar array?

A: Both, depending on your climate. Cloudy regions need higher solar oversizing.

Q: What’s better—LFP or NMC batteries?

A: LFP is safer and more stable for stationary storage.

📌 Conclusion

Designing a solar + battery system for a 100kWh 24/7 load isn’t just about matching numbers—it’s about planning for the worst day of the year, not the best. Location-specific solar data, battery autonomy, system losses, and seasonal variations must all be part of your sizing strategy.

How Safe Are Sodium-Ion Batteries? Key Safety Advantages Explained

June 15, 2025/0 Comments/in Battery Cells, Energy Storage Sysytem, Renewable Energy/by Rahul Jalthar

Why Sodium-Ion Battery Safety Matters for Businesses

When companies invest in energy storage, safety is often the top priority. Incidents with lithium-ion batteries—fires, thermal runaway, and compliance hurdles—have pushed businesses to seek safer alternatives. This is where sodium-ion battery safety stands out.

Sodium-ion batteries are designed with superior thermal stability, reduced fire risks, and simpler compliance pathways compared to lithium-ion. For businesses navigating strict safety certifications and EU regulations, sodium-ion offers a lower-risk, future-ready solution.

Why Sodium-Ion Battery Safety Is a Business Advantage

Businesses evaluating energy storage must look beyond performance and cost. Sodium-ion battery safety impacts:

Insurance premiums (lower with reduced fire risk).
Regulatory compliance (simpler with safer chemistry).
Operational reliability (less downtime from incidents).
Reputation (trusted systems protect brand image).

Thermal Stability: The Core of Sodium-Ion Battery Safety

Unlike lithium-ion, which can enter thermal runaway under stress, sodium-ion battery safety benefits from natural thermal stability.

Operates safely at higher temperatures.
Less prone to overheating in hot climates.
Reliable for indoor storage systems with limited cooling.

Reduced Fire Risk

Lithium-ion incidents often stem from internal short circuits, overcharging, or dendrite formation. Sodium-ion’s chemistry avoids many of these risks.

Uses safer electrolytes that are less flammable.
Reduced chance of catastrophic failure.
Lower insurance and safety management costs.

This makes sodium-ion battery safety especially attractive for residential, commercial, and industrial BESS.

Compliance and Certification Advantages

Meeting UL, IEC, and CE standards is a challenge with lithium-ion. Sodium-ion simplifies this process.

Safer baseline chemistry reduces certification complexity.
UL 1973 and IEC 62619 compliance is faster and cheaper.
Easier adoption under EU Battery Regulation 2026.

Real-World Use Cases

Homes & Apartments: Safe for garages and indoor ESS.
Commercial Buildings: Schools, hospitals, and offices benefit from safer storage.
Industrial & Utility-Scale: Lower risk of catastrophic failures in large installations.

In all these scenarios, sodium-ion battery safety lowers risk exposure while enabling smoother compliance.

Sodium-Ion vs. Lithium-Ion Safety: A Clear Comparison

Feature	Lithium-Ion	Sodium-Ion
Thermal Runaway	High Risk	Very Low Risk
Fire Hazard	Frequent	Minimal
Certification Complexity	High	Lower
Indoor Use	Limited	Safer

Bottom line: Sodium-ion battery safety is a decisive advantage in regulated industries.

Conclusion: Sodium-Ion Battery Safety as a Market Driver

As businesses adopt cleaner energy storage solutions, sodium-ion battery safety is a critical reason for the shift.

More thermally stable than lithium-ion.
Lower fire risks for homes, businesses, and utilities.
Easier compliance with UL, IEC, and EU regulations.

At SunLith Energy, we believe sodium-ion represents the future of safe, scalable energy storage. By prioritizing sodium-ion battery safety, businesses can reduce risks, protect their brand, and stay ahead of global compliance standards.

Half Sized Blog Element (Single Author Style)

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How to Choose Solar Panels and Batteries to Run a 100kWh Load 24/7: Full Guide with Examples

How Safe Are Sodium-Ion Batteries? Key Safety Advantages Explained

How to Choose Solar Panels and Batteries to Run a 100kWh Load 24/7: Full Guide with Examples

How Safe Are Sodium-Ion Batteries? Key Safety Advantages Explained

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