Still Paying Peak Electricity Charges Even After Switching to Open Access?

You invested in Open Access solar or wind power to reduce energy costs.

But you’re still:

• Paying high tariffs during evening peak hours
• Facing power outages or instability
• Losing energy due to curtailment

That’s because renewable energy alone is not enough.

To unlock its full value, you need control over when you use energy—not just how you generate it.

That’s exactly what iNVERGY Battery Energy Storage Systems (BESS) deliver.

What is Battery Energy Storage (BESS)?

A Battery Energy Storage System (BESS) stores excess electricity generated during low-demand periods and supplies it when demand and tariffs are high.

In simple terms:

• Charge when power is cheap (daytime solar)
• Discharge when power is expensive (peak hours)

Battery storage is now becoming essential, with leading players driving innovation in India.

If you’re evaluating providers, explore this detailed guide:

Top 10 Battery Energy Storage System (BESS) Companies in India

Why Open Access Users in India Need BESS

While Open Access reduces dependency on DISCOMs, it has limitations:

• Solar generation is limited to daytime
• Peak demand occurs in evening hours
• Grid outages still impact operations
• Curtailment leads to energy losses

Without BESS = partial savings
With BESS = full energy optimization

Policy Shift: Why BESS is Becoming Essential (Maharashtra & Gujarat)

Recent regulatory changes are making energy banking less beneficial:

Maharashtra

• Time-of-Day based banking restrictions

• Increasing push toward energy storage adoption

Gujarat

• Banking charges (~₹1.5/unit)

• Limited banking flexibility

What this means:
Banking is no longer free or flexible

New reality:

• Banking = limited

• BESS = controllable, reliable, cost-saving 

BESS vs Banking: Real Impact on Your Savings

 

Factor	Without BESS (Banking Only)	With iNVERGY BESS
Peak Hour Cost	High	Reduced
Banking Dependency	High	Minimal
Curtailment Loss	High	Eliminated
Power Reliability	Medium	High
Diesel Usage	High	Very Low

 

How iNVERGY BESS Improves ROI & Reliability (4 Key Benefits)

1. Peak Tariff Optimization (Reduce Electricity Cost by Up to 20–40%)

India follows Time-of-Day (ToD) tariffs, where electricity is significantly more expensive during peak hours.

Without BESS:

• Use solar during the day
• Buy costly grid power at night

With iNVERGY BESS:

• Store excess solar energy
• Use it during peak hours

Impact:

• Lower average cost per unit
• Faster ROI on Open Access investment
• Reduced dependence on grid tariffs

2. Zero Curtailment Losses (Maximize Every Unit Generated)

In states like Rajasthan, renewable energy is often curtailed due to grid constraints.

Without BESS:

• Excess power is wasted
• Financial returns drop

With iNVERGY BESS:

• Store unused energy
• Deploy it when demand increases

Impact:

• Up to 10–15% higher energy utilization
• Improved PPA value realization
• Predictable energy supply

3. Uninterrupted Power Supply (Business Continuity Guaranteed)

Even with Open Access, power flows through the grid making outages unavoidable.

Challenges:

• Production downtime
• Equipment damage
• Revenue loss

iNVERGY Solution:

• Instant backup (milliseconds response)
• Voltage and frequency stabilization
• Seamless switching

Impact:

• Near-zero downtime
• Higher operational efficiency
• Reliable power for critical operations

4. Replace Diesel Generators (Cut Costs & Emissions by 60–80%)

Diesel is expensive, volatile, and unsustainable.

With iNVERGY BESS:

• Replace diesel with stored renewable energy
• Reduce fuel dependency

Impact:

• Significant cost savings
• Lower carbon emissions
• Strong ESG compliance

Key Takeaway

Open Access reduces your energy cost
iNVERGY BESS multiplies your savings and ensures reliability

Additional Advantages of iNVERGY BESS

Peak shaving to reduce demand charges

Protection from rising electricity tariffs

Higher renewable energy utilization

Energy independence for industrial users

Scalable and future-ready infrastructure

 

iNVERGY BESS Deployment Models

1. On-Site BESS (Behind-the-Meter)

• Installed at your facility
• Ideal for peak shaving, backup, and cost optimization

2. Integrated BESS with Open Access Projects

• Storage at plant level
• Delivered as hybrid renewable energy

Why Choose iNVERGY for Battery Energy Storage?

ROI-focused system design (not generic solutions)

Expertise in industrial and commercial energy systems

Seamless integration with solar, grid, and hybrid setups

Scalable architecture for future expansion

Built for long-term performance and reliability

Is BESS Right for Your Business?

You should consider iNVERGY BESS if:

• Your peak-hour electricity costs are high
• You rely on diesel generators
• You face frequent power outages
• You want higher ROI from Open Access
• You aim to achieve sustainability targets

Frequently Asked Questions (FAQs)

1. What is the ROI of BESS in India?

Most commercial and industrial users see ROI within 3–6 years, depending on usage patterns and tariff differences.

2. Can BESS completely replace diesel generators?

Yes. In many cases, BESS can eliminate or significantly reduce diesel usage.

3. Is BESS suitable for all industries?

BESS is ideal for manufacturing, commercial facilities, data centers, and any business with high energy demand.

4. How does BESS improve reliability?

It provides instant backup and stabilizes power supply during outages and fluctuations.