What Is Group Captive Power and Why Kerala Industries Are Exploring It

If you've been looking into renewable energy for your factory or commercial building in Kerala, you've probably come across the term "group captive." It sounds complicated. It involves equity. It mentions generating companies and open access and 26% thresholds.

Let's take all of that apart and explain it simply — because once you understand the model, the reason so many Kerala industries are now seriously evaluating it becomes very clear.

The Basic Idea: Own a Share of Your Power Source

Group captive is fundamentally about co-ownership. Instead of buying power from a utility at retail tariffs, a group of industrial consumers collectively invest in a renewable energy plant — wind, solar, or hybrid — and buy power from it at cost.

This is not a new concept. It has been operating successfully in Tamil Nadu, Karnataka, and Rajasthan for over 15 years. What's changed is that the economics have improved dramatically, and Kerala industries are now large enough and sophisticated enough to participate.

The Regulatory Foundation

India's Electricity Act (2003) created the legal pathway for captive generation. The rules are specific:

• A group of consumers must collectively hold at least 26% equity in the generating company
• The group must collectively consume at least 51% of the plant's annual output
• Power is delivered via the existing transmission grid — wheeling charges apply, but captive surcharges are lower than open access
• Long-term Power Purchase Agreements (typically 15–25 years) lock in the per-unit cost

How the Power Actually Reaches Your Factory

This is the part that confuses most people. The renewable plant doesn't need to be next to your factory. A Kerala industry can co-invest in a wind project in Chitradurga, Karnataka — and the power is "wheeled" through the Karnataka and Kerala transmission networks to your meter. You pay wheeling charges for this network use, but the combined cost is still significantly lower than KSEB retail rates.

• Renewable plant generates power (wind farm in Karnataka, for example)
• Power injected into the regional grid at the plant's substation
• Transmitted via KPTCL/KSEB transmission network to your district
• Metered at your factory boundary — netted against your equity share
• You pay: renewable cost + wheeling + transmission charges (all-inclusive: ₹4.5–5.5/unit)

What Are the Real Savings?

What's the Timeline for a Kerala Industry?

• Months 1–2: Load assessment, savings modelling, equity structure discussion
• Months 2–4: Developer selection, PPA term negotiation, legal documentation
• Months 4–8: Regulatory approvals — open access, connectivity, banking agreements
• Months 8–30: Plant development, grid connectivity, testing
• Month 18–30: Commercial Operations Date (COD) — savings begin

It's not a fast process. But the 15–25 year economics make the timeline worthwhile — and the earlier you start, the earlier you lock in today's renewable project economics before costs rise.