Why put three technologies in one system
Solar and wind each have a problem, and it is the same problem: they only make power when the resource is there. A solar plant is dark at night; a wind farm falls quiet on a still afternoon. On their own, each is intermittent — useful, but not something a factory or a village can lean on around the clock.
The insight behind a hybrid system is that the two resources rarely fail at the same time. In much of India solar output peaks through the middle of the day, while wind often strengthens in the evening, overnight and through the monsoon months when the sun is weakest. Put them at one site and their good hours overlap only partly — so the combined output is far flatter than either alone. Add a battery energy storage system (BESS) to soak up the surplus and release it into the gaps, and you get something close to firm, dependable power from renewable sources.
That combination — solar plus wind plus storage behind a single grid connection — is what we mean by a hybrid microgrid. If you are new to the storage piece, our explainer on what a BESS is covers the building blocks first.
The complementary curve
The clearest way to see why hybrids work is to look at a day of generation.
The battery is what turns two wiggly lines into one straight one. When solar and wind together make more than the site needs, the BESS charges; when they make less, it discharges. Sized correctly, it lets the system promise a fixed block of power at fixed hours — which is exactly what utilities and industrial buyers are willing to pay a premium for.
How the pieces connect
A hybrid microgrid is not three separate plants that happen to share a fence. The point is that they share infrastructure and a single controller:
- One connection point. Solar, wind and the battery feed a common bus and export through a single transmission or distribution link. This is the biggest saving — one evacuation line and one substation serve all three, instead of three under-used connections.
- A power conversion system (PCS) turns the direct current from the panels and battery into the alternating current the grid uses, and manages the flow in both directions.
- An energy management system (EMS) is the brain. It decides, second by second, whether to send generation to the load, charge the battery, or export to the grid — following price signals, forecasts and the promised delivery schedule.
- Firm delivery. Because the controller can lean on stored energy, the whole system can commit to a schedule — the basis of the “round-the-clock” and firm-and-dispatchable products described below.
Sharing one connection is why co-location is cheaper than building solar and wind separately, and it is the reason India’s policy actively encourages it.
The policy that made hybrids happen
India did not stumble into hybrids — it wrote a policy for them. The Ministry of New and Renewable Energy (MNRE) issued the National Wind-Solar Hybrid Policy in May 2018, whose stated aim is the efficient use of land and transmission infrastructure by co-locating wind and solar, and which explicitly encourages adding storage for more reliable output. That policy opened the door; the tenders walked through it.
Since 2018 the Solar Energy Corporation of India (SECI) and others have run a growing series of hybrid and storage-backed auctions. These have evolved through several product types:
| Product | What it promises |
|---|---|
| Wind-solar hybrid | Co-located generation, smoother than solar or wind alone |
| Round-the-Clock (RTC) renewable | A defined block of renewable power across all hours |
| Firm and Dispatchable RE (FDRE) | Assured, schedulable supply — especially at peak — backed by storage |
FDRE is the most demanding of the three, and it is where the battery earns its keep. In early 2026 SECI awarded more than 11 GW across solar, hybrid, wind and FDRE auctions, and in mid-2026 it invited bids for a single FDRE tranche seeking 4,800 MWh of energy-storage-backed capacity — roughly four hours of supply from 1,200 MW of contracted power. Our guides to the FDRE tender framework and to renewable firming solutions unpack how these contracts are structured and priced.
The scale India is building
Hybrids are not a niche experiment here. The Khavda park in Gujarat — officially the Gujarat Hybrid Renewable Energy Park — is planned as the world’s largest, targeting about 30 GW of combined solar and wind on roughly 72,600 hectares of wasteland, and had already reached about 9.4 GW as of April 2026. India added around 44.5 GW of renewable capacity in 2025, with hybrids and storage a rising share of new tenders.
At the smaller end, the same logic drives microgrids: contained solar-wind-battery systems that power a factory campus, a remote township or a cluster of villages, either islanded from the grid or working alongside it. India’s smart-microgrid market was valued at roughly USD 1.2 billion in 2024 and is projected to reach about USD 3.4 billion by 2033, a double-digit annual growth rate, driven by rural electrification and industrial reliability needs. Our microgrid solutions page covers how a self-contained system is scoped for a specific site.
What this means for you
Whether you are a developer bidding an FDRE tender or a business trying to cut your grid dependence, the hybrid logic is the same: match complementary resources, then let a battery firm up the result.
- If you have both good sun and good wind at a site, co-locating them behind one connection is almost always cheaper per unit of firm power than building either alone — you share the evacuation line and fill more of the hours.
- If your goal is dependable supply rather than the cheapest kilowatt-hour, size the storage to the delivery promise you need to make, not just to the surplus you happen to generate. This is where our solar + wind + BESS solution starts: from the shape of the power you need, working backwards to the mix.
- If you are chasing a tender, read the availability and dispatch obligations carefully — FDRE and RTC contracts penalise missed schedules, so the battery sizing is a commercial decision, not just a technical one.
A quick caveat on the policy side: hybrid, RTC and FDRE tender terms — capacities, timelines, peak-hour definitions and penalties — are set by individual notifications and revised often, so verify the current terms of any specific tender before you commit. When you are ready to translate a site’s sun, wind and load into a firm-power configuration and its economics, talk to our team and we will size it with you.
Technical and market snapshot as of July 2026. Capacities, tender terms and projections move quickly; verify current datasheets, notified tender conditions and landed costs before financial decisions.