What is MWp?
MWp, megawatt-peak, is the rated DC capacity of a large solar plant measured at Standard Test Conditions. 1 MWp = 1,000 kWp = 1,000,000 Wp. It is the standard unit for utility-scale and large commercial solar plant rating, project finance models, tariff bidding, and national capacity reporting. Indian utility-scale plants range from 5 MWp to several hundred MWp, with solar parks aggregating multiple developers reaching multi-GW combined capacity.
1 MWp typically requires approximately 4 to 5 acres of land for fixed-tilt ground-mounted, or 5 to 6 acres for single-axis tracker installations. At module Wp class of 580, 1 MWp needs 1,724 modules; at 700 Wp, 1,429 modules. Land area, BOS quantity, and inverter capacity all scale with MWp.
Annual generation per MWp in India typically runs 1.5 to 1.9 million kWh. Rajasthan and Gujarat utility-scale plants (high irradiance, tracker + bifacial) reach 1.8 to 1.9 million kWh per MWp per year. Indian average sites are around 1.5 to 1.65 million.
Why MWp matters
For utility-scale developers, MWp is the project size unit. SECI auctions, PPA contracts, and state agency tenders all reference MWp.
For finance, MWp drives project cost (₹4 to ₹6 crore per MWp), revenue (MWp × annual yield × tariff), and IRR modelling.
For policy, India's national renewable targets reference cumulative GWp (1,000 MWp). State-level deployment tracking also uses MWp.
For module manufacturers, supply contracts are quoted in MWp delivered against ALMM-listed Wp class modules.
Benefits of MWp as a unit
- Project sizing standard. Universal across utility-scale.
- Tariff and PPA basis. Tariffs quoted per kWh on MWp capacity.
- Finance modelling. Project cost and revenue scale with MWp.
- National capacity reporting. Government statistics use MWp / GWp.
- Land planning. ~4 to 6 acres per MWp known.
- Generation forecasting. Yield × MWp gives expected annual generation.
Limitations
DC vs AC distinction. MWp is DC; MW AC is inverter rating.
Site-specific yield variation. Same MWp produces different kWh by location.
Does not include design choices. Tracker, bifacial, etc., affect output.
Does not capture O&M cost. Same MWp can have different lifetime costs.
Real generation lower than peak. CUF 18 to 25 percent typical.
MWp landscape in Indian solar
| Project class | Typical scale | Typical CUF |
|---|---|---|
| Small captive commercial | 1 to 5 MWp | 17 to 20 percent |
| Mid-scale commercial / open-access | 5 to 50 MWp | 18 to 22 percent |
| SECI utility auction | 50 to 500 MWp | 20 to 25 percent (tracker + bifacial) |
| Solar park multi-developer | 500 MWp to 5,000+ MWp | Various |
| PMKUSUM Component A | 0.5 to 2 MWp on farmer land | 17 to 20 percent |
| Floating solar | 1 to 100+ MWp | 17 to 20 percent |
Quick facts
| Term | MWp (Megawatt-Peak) |
|---|---|
| Equals | 1,000 kWp or 1,000,000 Wp |
| Application | Utility-scale and large commercial |
| Typical Indian utility-scale cost | ₹4 to ₹5 crore per MWp |
| Typical annual generation in India | 1.5 to 1.9 million kWh per MWp |
| Typical Indian CUF | 18 to 25 percent |
| Land per MWp | 4 to 6 acres |
| Modules per MWp at 580 Wp | ~1,724 modules |
Common mistakes about MWp
- Confusing MWp DC with MW AC. Different capacity ratings.
- Treating land requirement as uniform. Tracker uses more.
- Comparing MWp across irradiance regions. Same MWp produces different kWh.
- Forgetting DC/AC ratio in inverter sizing. Affects cost.
- Mixing MWp and MWh. Power vs energy.
- Skipping CUF when forecasting generation. Wide variation.
Key takeaways
- MWp is the rated DC capacity of large solar plants in megawatts at STC.
- 1 MWp = 1,000 kWp = 1,000,000 Wp.
- Used for utility-scale and large commercial solar.
- Indian utility-scale cost: ₹4 to ₹5 crore per MWp.
- Annual generation per MWp: 1.5 to 1.9 million kWh in India.
- Land requirement: 4 to 6 acres per MWp.
- CUF: 18 to 25 percent depending on design and location.
Frequently Asked Questions
What is MWp?
MWp stands for megawatt-peak. It is the rated DC capacity of a large solar plant under Standard Test Conditions, equal to 1,000 kWp or 1,000,000 Wp. MWp is the unit used for utility-scale and large commercial solar plant rating, project finance, and tariff bidding.
How many modules make 1 MWp?
Depends on module Wp class. At 580 Wp per module: 1,000,000 ÷ 580 = 1,724 modules. At 700 Wp: 1,429 modules. At 540 Wp: 1,852 modules. Higher per-module Wp means fewer modules per MWp.
How much land does 1 MWp need?
Approximately 4 to 5 acres for fixed-tilt ground-mounted; 5 to 6 acres for single-axis tracker installations. Roof-mounted needs about 5,500 to 7,000 square metres of usable roof area.
What is the annual generation of 1 MWp in India?
1.5 to 1.9 million kWh per year, depending on location, design (tracker, bifacial), and Performance Ratio. Rajasthan and Gujarat at the upper end (1.8 to 1.9 million); Indian average around 1.5 to 1.65 million.
How much does 1 MWp utility-scale cost?
Approximately ₹4 to ₹5 crore for ground-mounted utility-scale in 2026. Commercial rooftop: ₹4.5 to ₹6 crore. Costs vary with module class, mounting (fixed-tilt vs tracker), and BOS.
What is the CUF for 1 MWp?
Fixed-tilt: 18 to 20 percent typical Indian CUF. Single-axis tracker: 20 to 24 percent. Tracker + bifacial in high-irradiance sites: 22 to 25 percent.
How is MWp related to MW AC?
MWp is DC capacity at STC. MW AC is inverter output capacity. Typical DC/AC ratio 1.2 to 1.4 means 1 MWp DC pairs with 0.7 to 0.85 MW AC inverter capacity in utility-scale.
How long does it take to build a 1 MWp plant?
Small ground-mounted: 3 to 6 months from land acquisition. Larger plants: 6 to 12 months including grid evacuation. Rooftop 1 MWp can build in 2 to 3 months.
What's the workforce for 1 MWp construction?
Typically 40 to 80 workers on-site for several weeks during peak construction. Skilled and semi-skilled roles: structural fabrication, electrical, BOS installation, inverter commissioning.
What is the typical PPA tariff for 1 MWp Indian utility-scale?
Recent SECI auction tariffs: ₹2.20 to ₹3.00 per kWh for solar-only. Hybrid (with wind) or storage-bundled: ₹3.00 to ₹4.00 per kWh.
What is the difference between MWp and MWh?
MWp is rated DC capacity (peak power). MWh is energy (MW × hours). A 1 MWp plant generates ~1,700 MWh per year in India, not 1 MWh per hour.
Is MWp used in rooftop solar?
Above 1 MWp installations are typically commercial or industrial rooftop on large warehouses or factories. Most residential rooftop is sub-10 kWp; commercial up to several hundred kWp.
Run your solar business on QuickEstimate
India's mobile-first solar CRM. Send subsidy-ready proposals on WhatsApp in 60 seconds. Free for 10 proposals a month, no card.
Start free →Sources
- SECI tender documents. Utility-scale capacity references. seci.co.in
- MNRE. National solar capacity statistics. mnre.gov.in
- CEA. National installed capacity data.
- Bridge to India and Mercom India. Indian utility-scale market analysis.
- Module manufacturer datasheets. Wp aggregation to MWp.
- IS 14286. Indian module standard.
- Indian utility-scale plant operational reports. Generation and CUF data.
Written by QuickEstimate Editorial, QuickEstimate Editorial (Surat).
Last updated: 4 June 2026.