REI Expo 2026 preview: India's biggest renewable energy trade show, October 1–3 Greater Noida
REI Expo 2026 (Renewable Energy India) runs October 1–3 at India Expo Mart, Greater Noida — India's largest annual renewable energy trade show. Expecting 35,000+ visitors and 750+ exhibitors across solar, BESS, inverters, EV, and green hydrogen. Key threads for 2026: ALMM List-IV expansion, India cell PLI ramp, PM Surya Ghar at scale, and India-EU module export economics under CBAM.
In 50 words: REI Expo 2026 (Renewable Energy India) runs October 1–3 at India Expo Mart, Greater Noida — India's largest annual renewable energy trade show. Expecting 35,000+ visitors and 750+ exhibitors across solar, BESS, inverters, EV, and green hydrogen. Key threads for 2026: ALMM List-IV expansion, India cell PLI ramp, PM Surya Ghar at scale, and India-EU module export economics under CBAM.
REI Expo is the centerpiece of India's renewable energy trade calendar — the show where the entire Indian solar manufacturing, EPC, developer, and storage ecosystem gathers each October. This guide previews the 2026 edition: what's different from 2025, the key threads to watch, and which Indian energy companies and policy announcements are likely to dominate.
The event
REI Expo 2026 runs October 1–3, 2026 at India Expo Mart in Greater Noida (NCR Delhi). The 2026 edition is organized by Informa Markets with MNRE patronage. Pre-show forums begin September 30.
- 35,000+ attendees expected (vs ~32,000 in 2025)
- 750+ exhibitors across 5 halls
- 5 co-located conferences: Solar India, ENERGY STORAGE INDIA, Green Hydrogen India, EV India, Smart Grid India
- Strong international presence: ~120 international exhibitors expected
Four threads to watch
1. ALMM List-IV expansion
May 2026 brought ALMM List-III past 100 GW certified module capacity, with List-IV expansion to cover solar cells now in active rule-making at MNRE. REI 2026 will be the venue where most major Indian cell manufacturers (Waaree, Adani Solar, ReNew, Premier Energies, Vikram Solar) discuss cell-side ALMM readiness. For policy context, see India ALMM List-III 2026 update and India cell PLI List-IV 2026.
2. Cell PLI scaling
India's solar cell PLI scheme (Production-Linked Incentive) is the structural lever for moving from module-only manufacturing to fully integrated cell + module + wafer + ingot capacity. REI 2026 will showcase the first wave of operating PLI-supported cell lines — Waaree Energies' 6 GW cell line, ReNew Photovoltaics, Premier Energies cell capacity ramp. For India's solar manufacturing context, see India solar manufacturing 100GW 2026.
3. PM Surya Ghar at scale
PM Surya Ghar Muft Bijli Yojana, India's residential rooftop solar program, crossed the 1.5 crore (15 million) installation threshold in 2025 and is on track for the 1 crore (10 million) new installations target by FY 2027. REI 2026 will feature large dedicated residential rooftop pavilions, installer training programs, and a fresh wave of homeowner-facing brands. For deeper coverage, see PM Surya Ghar Yojana complete guide 2026 and India rooftop solar 30GW target.
4. India-EU export under CBAM
Indian solar module exporters now face EU CBAM steel/aluminum cost pass-through and (potentially) future scope expansion to cells/modules. REI 2026 will host policy panels on India-EU module trade, the role of Indian cell manufacturing in serving EU domestic-content requirements, and the implications of EU Solar Rooftops Directive demand for Indian exporters. See EU CBAM impact on solar imports 2026 and India solar EPC leaders 2026.
Who to expect
| Category | Notable confirmed exhibitors | |---|---| | Module manufacturers | Waaree, Adani Solar, Vikram Solar, Goldi, Premier Energies, RenewSys, Saatvik Green, Insolation, Servotech, Loom Solar | | Cell manufacturers | Waaree (cells), Premier Energies, ReNew Photovoltaics, Adani Solar (cells), Goldi (cells planned) | | Inverter brands | Sungrow, Huawei, SMA, GoodWe, Solis, Power Electronics, KSolare, Hitachi Energy | | BESS | Tata Power, Adani Energy Solutions, ReNew, Hero Future Energies, BluSmart, Loom Solar | | Project finance | REC Ltd, IREDA, PFC, SBI, Yes Bank, Axis Bank | | Global trade attaches | Singapore, UAE, Germany, Japan, US, EU member states |
What's new vs. 2025
- Dedicated Green Hydrogen India pavilion expanded (vs limited 2025 presence)
- First-time formal India-EU policy panel on Solar Rooftops Directive implementation
- Larger PM Surya Ghar showcase area (~30% more space)
- New focus on energy communities and behind-the-meter solar + BESS bundles
Practical notes for attendees
- Location: India Expo Mart, Greater Noida (~50 km from central Delhi). Plan 90+ min travel from Delhi airport
- Registration: pre-register online; on-site queues add 30–60 min on Day 1
- Best day for serious meetings: Day 2 (October 2) — less crowded than Day 1
- Co-located show passes: REI pass typically grants access to all co-located conferences
For broader India coverage and other upcoming India events, see India ICRC Energy Storage Week 2026 and our exhibitions calendar.
Looking ahead
REI 2027 (expected late September / early October) will follow PM Surya Ghar's revised FY2028 targets and the first major cohort of fully-operational India cell PLI capacity. Expect dramatically more cell + integrated module exhibitor presence vs 2026.
Researched and drafted with AI assistance; reviewed and edited by Priya Sharma. Browse more solar coverage or our India region hub. Standards: editorial, AI disclosure.