Solar Sizing With an EV: PM Suryaghar Math 2026

If you have just brought home a Tata Nexon EV, MG ZS EV, or Hyundai Kona — or you’re planning to — the rooftop solar conversation changes completely. An electric vehicle (EV) is the single largest discretionary load most Indian households will ever add. A daily 40 km commute pulls 6–8 kWh (kilowatt-hour) out of your meter every night, which is roughly the entire daily consumption of a small 1-BHK flat. Sizing a PM Suryaghar system in 2026 without accounting for the EV is the most expensive mistake an early adopter can make: you claim the ₹78,000 subsidy, install a 3 kW system, and watch your bill stay flat because the EV is eating every spare kilowatt-hour. This guide gives you the math, the model-by-model numbers, and the recommended kilowatt-peak (kWp) rating for combined home + EV use.

Direct answer. If you own an EV and drive 30–50 km/day, do not stop at the ₹78,000 PM Suryaghar subsidy cap (3 kW). Add 2–3 kW for the EV and install 5–7 kW total. A 6 kW rooftop system in most Indian cities generates ~9,000 kWh/year — enough for a 3-BHK home (4,500 kWh) plus a daily 40 km EV commute (2,500 kWh) with a buffer. Subsidy stays ₹78,000; the extra 2–4 kW is at full cost but pays back in ~4 years.

The rest of this article shows the working — what variables actually matter, the Wh/km (watt-hour per kilometre) consumption of every popular Indian EV, three sizing scenarios mapped to home types, and the day-vs-night charging trade-off that decides whether your solar pays back in 3.5 years or 5.

How Much Does an EV Add to Your Daily Energy Bill?

The first step in solar sizing is honest accounting of the EV load. Most homeowners underestimate it because the EV charger sits silently overnight and never shows up as a “device” the way an air conditioner (AC) does. But the meter doesn’t care — every kilowatt-hour the car pulls is billed at your highest tariff slab.

A typical Indian EV in 2026 consumes between 130 and 180 Wh/km, depending on the model, terrain, and driving style. Multiply by daily kilometres and you get the energy added to your bill. A 40 km/day commute on a Tata Nexon EV (150 Wh/km) is 6.0 kWh/day, or roughly 180 kWh/month. At a typical residential tariff of ₹7.50/kWh in the upper slab, that’s ₹1,350/month added to your electricity bill — or about ₹16,200/year. Higher-end SUVs like the MG ZS EV or BYD Atto 3 push 170–180 Wh/km, taking daily consumption to 7–8 kWh and the monthly cost above ₹1,800.

The second effect is the tariff slab push. Indian DISCOMs (Distribution Companies) use telescopic slab tariffs — your last kilowatt-hour is the most expensive. If your home already consumes 300 kWh/month and sits at the top of slab 3, adding an EV that pulls another 180 kWh shoves you into slab 4 or 5, where every additional unit costs ₹7.85 instead of ₹6.10. The EV doesn’t just add energy cost — it raises the effective price of every kilowatt-hour the rest of your home consumes too.

This is exactly why solar economics improve dramatically once an EV enters the equation. With a non-EV home, the question is “how do I cover my fan + light + AC load?” With an EV, the question becomes “how do I cover the highest-tariff slab of my bill?” — which is what rooftop solar is best at doing. The Niti Aayog India EV transition report projects 30% EV penetration in private cars by 2030, and the DISCOM tariff pressure that creates is already visible in the 2024–25 retail tariff orders.

The 4-Variable Solar-EV Sizing Formula

Every Heaven Green Energy sizing call for an EV-owning household uses the same four-variable framework. Get these four numbers right and the rooftop kilowatt-peak figure falls out cleanly. Skip any one and you end up with a system that’s either undersized (and the EV erases the savings) or oversized (and the export tariff erodes payback). We call it the 4-Variable Solar-EV Sizing Formula.

The compact form is:

Required kWp = ((V1 × V2) / 1000 + V3) ÷ (PSH × PR × V4)

Where PSH is peak sun hours per day for your city (5.2 in Mumbai, 5.7 in Jaipur, 4.8 in Bengaluru) and PR is performance ratio (0.75 typical). The four variables you supply are below.

Variable 1 — EV Daily Kilometres (V1)

Be honest, not aspirational. Most Indian private EVs do 25–45 km/day on average — the school + office + market loop. Use your last month’s odometer reading divided by 30, not the figure you’d quote at a dinner party. If you have two EVs, sum them. If your commute is variable (3 days office, 2 days work-from-home), use the weekly average ÷ 7. A common mistake is to use the EV’s full range (say 300 km) as the daily input — that produces a 12 kW system you don’t need.

Variable 2 — EV Efficiency in Wh/km (V2)

This is the official ARAI-tested or manufacturer-published consumption figure for your specific model. The popular Indian EV table later in this article gives the working numbers. Real-world consumption runs 10–15% higher than the rated figure due to AC use, hilly terrain, and aggressive driving — so we add a 1.12 multiplier in our internal sizing sheet. A Tata Nexon EV rated at 150 Wh/km is sized at 168 Wh/km for honest planning.

Variable 3 — Household Base Load (V3)

This is everything that isn’t the EV — lights, fans, refrigerator, AC, washing machine, water pump, geyser. Take it directly from your last 12 months of electricity bills, sum the kilowatt-hours, divide by 365. A typical Indian 2-BHK without AC sits around 6 kWh/day; a 3-BHK with two ACs runs 12–15 kWh/day; a 4-BHK villa with central cooling can hit 25 kWh/day. For sizing accuracy, pull the highest-consumption month (usually May or June) and divide that month’s total by 30.

Variable 4 — Daytime Charging Feasibility (V4)

This is the most important variable and the one most homeowners miss. It’s the fraction of EV charging you can realistically shift to daytime, when solar is producing. If you can plug in between 10 AM and 4 PM (a work-from-home household, a weekend driver, or a household with a parked second car), V4 sits at 0.7–0.9. If the EV only charges 10 PM to 6 AM because it’s out all day, V4 drops to 0.1–0.2 and you need a larger system to compensate for grid export losses. We discuss the financial mechanics in the day-vs-night charging section below, but for now the rule is: higher V4 = smaller required system.

For a deeper walk-through of system sizing without the EV variable, the home solar system size guide covers the base-load calculation in detail. To run your own numbers without doing the algebra, use the Heaven Green solar calculator — it asks the same four inputs and returns a recommended kWp with PM Suryaghar subsidy applied.

EV Models in India and Their Energy Consumption

The single most useful table for solar sizing is the actual Wh/km figure for the EV you drive (or are about to buy). The numbers below are blended from ARAI test cycles, manufacturer specifications, and real-world owner data published through 2024–25. Use the “real-world” column for solar sizing — it accounts for AC use and typical Indian driving conditions.

EV Model	Battery (kWh)	ARAI Wh/km	Real-world Wh/km	Daily kWh at 40 km
Tata Tiago EV (med range)	24	130	145	5.8
Tata Tigor EV	26	140	155	6.2
Tata Nexon EV (LR)	40.5	150	168	6.7
Tata Punch EV (LR)	35	145	162	6.5
Mahindra XUV400 EV	39.4	155	172	6.9
MG ZS EV	50.3	170	190	7.6
MG Comet EV	17.3	110	125	5.0
Hyundai Kona Electric	39.2	150	168	6.7
BYD Atto 3	60.5	175	195	7.8
Citroën ëC3	29.2	140	158	6.3
Mahindra BE 6	79	180	200	8.0
Tata Curvv EV (LR)	55	165	185	7.4

A few patterns worth noting. Compact city EVs like the MG Comet and Tata Tiago sit at 110–145 Wh/km — these only add 4–6 kWh/day at typical city use, and a 5 kW solar system comfortably covers a 3-BHK home plus the car. Midsize SUVs (Nexon, Kona, XUV400) cluster at 150–172 Wh/km — the workhorse segment, requiring 6–7 kW. Premium SUVs (MG ZS, BYD Atto 3, Mahindra BE 6) push 170–200 Wh/km — these households should plan 7–8 kW minimum, especially if there are two cars in the family.

For a household considering an EV-first purchase decision, the lower-Wh/km models compress solar sizing significantly — a Tata Tiago EV plus a 3 kW PM Suryaghar system can almost net-zero a small home. For comparison, our Suryaghar for a 3-AC home guide shows how the same 3 kW system performs when the load is cooling-dominated rather than EV-dominated.

Recommended Solar System Size for EV Owners

With the four-variable framework and the model table in hand, the recommended system size becomes a clean lookup. The three scenarios below cover roughly 85% of the residential EV households we install for.

Home + EV Profile	Daily kWh need	Recommended kWp	All-in cost	After ₹78K subsidy	Annual savings	Payback
1-BHK + 1 small EV (Tiago/Comet)	10–12	3 kW	₹1.70–₹1.85 L	₹92K–₹1.07 L	₹38,000	2.5–3 yr
2-BHK + 1 EV (Nexon/Kona)	14–18	5 kW	₹2.65–₹2.90 L	₹1.87–₹2.12 L	₹58,000	3.5 yr
3-BHK + 2 AC + 1 EV (Nexon/MG)	20–25	7 kW	₹3.60–₹3.90 L	₹2.82–₹3.12 L	₹78,000	4 yr
4-BHK villa + 2 EV (Atto/BE6)	30–38	10 kW	₹5.10–₹5.50 L	₹4.32–₹4.72 L	₹1,15,000	4–4.5 yr

Costs assume tier-1 ALMM-listed (Approved List of Models and Manufacturers) panels, a BIS-certified hybrid-ready inverter, mounting structure, and JVVNL/MSEDCL-grade net metering. The ₹78,000 subsidy applies once per consumer connection, regardless of system size — so the marginal economics of installing 5 or 7 kW instead of 3 kW depend entirely on whether that extra solar offsets the highest-tariff slabs, which is exactly what an EV pulls. The PM Suryaghar complete guide walks through the subsidy mechanism and disbursement timeline in full detail.

A practical decision rule we use on the phone: if your monthly electricity bill (pre-EV) is below ₹2,000, install 3 kW and claim the full subsidy — adding more kilowatt-peak doesn’t pay back inside 4 years. If your bill sits between ₹2,500 and ₹4,500 and you have one EV, install 5 kW. If you’re above ₹4,500 with two cars or heavy AC use, 7 kW is the right answer. Above ₹7,000 monthly, consider 10 kW with hybrid storage so the EV charges from stored solar overnight.

Get a free Solar-EV sizing call. Heaven Green Energy’s design team runs the 4-variable formula on your bill and EV model in 20 minutes — you walk away with the exact kWp, cost, subsidy, and payback. Book your free consultation →

Day vs Night Charging — Why Timing Matters for Solar Owners

This is the section that decides whether your solar-EV setup actually pays back. The same 6 kWh of daily EV charge can cost you ₹0 (daytime self-consumption) or ₹24 (night charging via grid round-trip) depending purely on when you plug in.

The economics work like this. When solar generates a kilowatt-hour at noon and your EV consumes it immediately, you’ve offset retail tariff (~₹7.50/kWh) — the kilowatt-hour is worth the full ₹7.50 to you. When solar exports that same kilowatt-hour to the grid at 1 PM because the EV is at the office, your DISCOM credits you at the Average Power Purchase Cost (APPC) — typically ₹3.00–₹3.50/kWh per the relevant state regulator’s tariff order. Then when the EV plugs in at 10 PM, you buy that kilowatt-hour back from the grid at retail tariff. The round-trip loss is ₹4–₹4.50 per kilowatt-hour, every single cycle, every single day.

For a 6 kWh/day EV, that’s ₹24–₹27/day or ₹8,400–₹9,800/year lost to a timing mismatch. Over a 25-year system life that’s nearly ₹2.5 lakh — more than the post-subsidy cost of a 3 kW system on its own. This is why V4 (daytime charging feasibility) is the most important variable in the sizing formula.

There are four practical ways to lift V4:

1. Work-from-home or hybrid work — if anyone in the household is home midday, the EV plugs in at 10 AM and tops up by 4 PM, capturing 90% solar self-consumption.
2. Weekend-heavy driving — if the EV is mostly used Saturday and Sunday, weekday daytime charging at home is trivial. V4 rises to 0.7+.
3. Schedulable AC charging — most Level 2 chargers (TATA EZ Charge, Statiq, Exicom) accept timer schedules. Set the charge window to 10 AM–4 PM rather than overnight.
4. Battery storage (hybrid system) — adds 5 kWh of battery to your inverter, which captures midday solar surplus and discharges to the EV at night. Adds ₹40,000–₹70,000 to system cost but lifts effective self-consumption to 85%+.

Verdict. For solar-EV households, daytime charging is worth ₹8,000–₹10,000/year in avoided round-trip losses. Wherever the household lifestyle allows, schedule the EV to charge between 10 AM and 4 PM. If overnight charging is the only option, plan a 1–2 kW larger system to absorb the export-import economics, or invest in a 5 kWh battery to bridge daytime solar to night-time EV draw.

This timing argument is the single biggest reason the PM Suryaghar economics for EV owners look different from non-EV homes. For a deeper breakdown of how export tariffs affect rooftop ROI generally, our solar ROI calculation guide walks through the APPC vs retail math line by line.

Smart Charging Setups: AC vs L1 vs L2, and DC Fast Charging

The hardware on the wall matters as much as the kilowatt-peak on the roof. The wrong charger can throttle a perfectly-sized solar system, or convert daytime solar surplus into night-time grid buys. There are three options to know about.

AC Level 1 (slow, 2.5–3.3 kW) — this is the wall-socket charger that ships in the boot of every Indian EV. It draws 10–15 amps from a regular 16A socket and delivers full charge in 8–10 hours. Perfect for overnight charging on a sanctioned 3 kW domestic connection. Cheap (₹0–₹15,000), but slow — you cannot top up midday during a 4-hour solar window because 4 hours × 3 kW = 12 kWh, which is more than enough for daily commute but the charger can’t accept higher solar power.

AC Level 2 (faster, 7.2–11 kW) — a dedicated wall-mounted unit on a 3-phase or single-phase 32A connection. Delivers full charge in 3–5 hours. This is what unlocks midday solar charging — a 7 kW solar system feeding a 7 kW Level 2 charger lets you fully replenish a 40 kWh battery between 10 AM and 4 PM with zero grid draw. Cost: ₹35,000–₹75,000 installed, plus a likely ₹3,000–₹5,000 DISCOM load-enhancement fee.

DC Fast Charging (25–60 kW) — public stations only. Home installation is impractical (requires industrial 3-phase supply), and the load far exceeds typical residential rooftop solar capacity. Use at highway stops, malls, and PSU charging plazas. Not part of a home solar sizing calculation.

Feature	AC Level 1	AC Level 2	DC Fast
Power output	2.5–3.3 kW	7.2–11 kW	25–60 kW
Full charge time (40 kWh battery)	8–12 hrs	4–6 hrs	30–60 min
Indian price (installed)	₹0–₹15,000	₹35,000–₹75,000	₹5–15 lakh
Best for	Overnight grid charging	Daytime solar charging	Public stations
Sanctioned-load requirement	3 kW domestic	7 kW domestic / 3-phase	22 kW+ commercial
Solar self-consumption fit	Low (overnight)	High (midday window)	None (public)

For PM Suryaghar households planning real solar-EV integration, the Level 2 charger is the right choice — it matches the kilowatt rating of a typical 5–7 kW rooftop system and accepts the full midday solar flow. The standalone how to add EV charger to solar guide covers the electrical work, DISCOM coordination, and inverter compatibility in detail.

Common Mistakes EV Owners Make Sizing Solar

Across the EV-owning households we’ve installed for since 2023, the same six errors repeat. Each one costs the homeowner between ₹50,000 and ₹2 lakh over the system lifetime. All are avoidable with a 30-minute pre-sizing conversation.

1. 1
   Stopping at 3 kW because that's the subsidy cap. The ₹78,000 ends at 3 kW, but your bill doesn't. An EV pulls 6+ kWh/day — a 3 kW system covers home OR EV, not both. Install 5–7 kW; subsidy stays ₹78,000, extra capacity pays back at 4 years.
2. 2
   Ignoring sanctioned load before applying. A 7 kW solar system needs at least 7 kW sanctioned load on your DISCOM bill. Most Indian homes have 3–5 kW. Apply for a load enhancement first; it adds 15–25 days but saves the entire PM Suryaghar application.
3. 3
   Choosing a grid-tied inverter when V4 is below 0.3. If the EV charges only at night, you'll export 70% of daytime generation and buy back at retail. A hybrid inverter + 5 kWh battery costs ₹50K extra but recovers it in 5 years through avoided round-trip loss.
4. 4
   Using rated Wh/km instead of real-world. ARAI-tested figures are 10–15% optimistic. Sizing a Tata Nexon EV at 150 Wh/km when real-world is 168 Wh/km undersizes the system by ~5% per car. Over a 25-year life, that's ₹1 lakh of avoidable grid buys.
5. 5
   Not planning for a second EV. If you're an EV-first household in 2026, the odds you add a second car by 2030 are high. Size today for tomorrow's load — adding 2 kW upfront costs ₹70K; retrofitting 2 kW later costs ₹1.1 lakh because of structure, conduit, and re-commissioning.
6. 6
   Picking the cheapest Level 1 charger and forgetting Level 2. The in-box 3.3 kW charger can't accept the midday output of a 7 kW solar system, so you forfeit self-consumption value. A ₹40K Level 2 charger recovers its cost in 18 months for any household charging during the day.

How Heaven Green Energy Designs Solar-EV Combined Systems

Heaven Green Energy has been installing rooftop solar across north India since 2018, and EV-integrated systems have become roughly 30% of our 2025–26 residential pipeline. Our design workflow for solar-EV households differs from a standard PM Suryaghar install in five places, and each is built into the 30-minute on-site survey.

Load profiling with EV separation. We pull your last 12 months of DISCOM bills and ask for your EV’s odometer log if available. The base-load and EV load get sized separately — we don’t blend them, because blending hides the daytime-vs-night charging question. The output is a 24-hour load curve, not just a monthly kilowatt-hour total.

ALMM-listed panel selection for high-density rooftops. Indian apartments and 3-BHK villas typically have 350–500 sq ft of usable roof. A 7 kW system needs ~450 sq ft of monocrystalline tier-1 panels (Adani, Waaree, Vikram, Tata). We default to 580–600 Wp panels in the 2026 product range, which fits 7 kW into 380 sq ft and leaves rooftop space for the next 2 kW expansion.

Hybrid-ready inverter as standard for EV households. Even when the customer doesn’t buy a battery on day one, we install a hybrid-capable inverter (Sungrow, Deye, or Luxpower in the 5–10 kW range). This means a 5 kWh battery can be retrofitted in year 3–4 without replacing the inverter — important once V4 reality becomes clear after living with the EV for a few months.

Level 2 EV charger integration on the same DC bus. For premium installations we wire the Level 2 EV charger off the same DC bus as the solar string, so the inverter prioritises EV charging over grid export during the midday window. This is the highest-self-consumption configuration available in 2026 and lifts effective V4 to 0.85+ without lifestyle changes.

PM Suryaghar paperwork end-to-end. We handle the portal application, DISCOM feasibility, net meter coordination, and Direct Benefit Transfer (DBT) tracking — same as our standard residential installs. The EV doesn’t change the subsidy mechanism; it just shifts the optimal system size from 3 kW to 5–7 kW.

Match your project to the right service:

• Residential Solar — 3–10 kW PM Suryaghar systems with EV integration, end-to-end.
• Solar Calculator — input bill, EV model, and daily kilometres for an instant recommended kWp.
• Contact Heaven Green Energy — book a free on-site solar-EV survey.

For broader background on the PM Suryaghar subsidy mechanism that funds the first 3 kW of every install, the PM Suryaghar complete guide covers the application, documents, and DBT timeline. For city-specific cost and irradiance assumptions, see the home solar system size guide.

Frequently Asked Questions

Can I claim PM Suryaghar subsidy for solar installed specifically to charge my EV?

Yes — PM Suryaghar is agnostic to what you use the electricity for. The subsidy is paid on the rooftop solar PV (photovoltaic) capacity, capped at ₹78,000 for 3 kW or larger. Whether that solar feeds an air conditioner, a refrigerator, or an EV charger doesn’t change the eligibility. The subsidy is released by the Ministry of New and Renewable Energy (MNRE) via Direct Benefit Transfer within 30 days of DISCOM net-meter commissioning, regardless of end-use.

Do I need a bigger sanctioned load on my electricity bill if I want solar plus an EV charger?

Usually yes. Most Indian residential connections have 3–5 kW sanctioned load. A 5–7 kW solar system plus a 7 kW Level 2 EV charger pushes you into 7–10 kW territory, which requires a load enhancement application to your DISCOM. The enhancement is independent of PM Suryaghar — it takes 15–25 working days and a fee in the range of ₹3,000–₹8,000 depending on state. File it before the PM Suryaghar application to avoid a feasibility rejection.

Is 3 kW PM Suryaghar enough for an EV household, or should I always go bigger?

3 kW is enough only if your home is 1-BHK or 2-BHK with no AC, and the EV is a city compact like the Tata Tiago EV or MG Comet (≤145 Wh/km) driven 30 km/day. For any 3-BHK home with AC, or any midsize-SUV EV (Nexon, Kona, MG ZS), 5–7 kW is the right answer. The ₹78,000 subsidy is the same; the extra capacity is at full cost but pays back in 4 years thanks to the high-tariff slab offset.

What’s the payback period on a 6 kW solar system that includes EV charging?

Payback for a 6 kW system in 2026 runs 3.5–4 years for an EV-owning household with 70%+ daytime self-consumption. The all-in cost is ₹3.10–₹3.40 lakh; subsidy lowers it to ₹2.32–₹2.62 lakh; annual savings (home + EV combined) sit around ₹68,000. If charging is mostly at night, payback drifts to 4.5–5 years because of APPC round-trip losses. Adding a 5 kWh battery shortens payback only marginally and is more about resilience than economics.

Can solar export earnings cover my EV charging cost if I always charge at night?

Partially, but inefficiently. Solar exports to the grid at APPC (₹3.00–₹3.50/kWh) and your EV consumes at retail tariff (₹7.00–₹7.85/kWh). For every kilowatt-hour the EV needs at night, you’d need to export ~2.2 kWh during the day to break even. This means a much larger system — typically 8–10 kW for a single EV — and the marginal economics deteriorate fast. Daytime charging or battery storage gives meaningfully better returns.

Does my EV warranty get affected if I charge from a solar-powered home setup?

No. Every EV sold in India in 2026 — Tata, MG, Mahindra, Hyundai, BYD, Citroën — accepts charging from any AC source meeting the BIS-certified Bharat AC-001 or Type-2 IEC standard. Solar-fed AC charging from a grid-tied inverter is indistinguishable from grid AC from the car’s perspective. Manufacturer warranties cover the battery regardless of upstream source. Avoid only DIY DC fast-charging setups, which can void warranty.

Should I install a battery if I have an EV and rooftop solar?

A 5 kWh home battery makes sense when V4 (daytime charging feasibility) is below 0.3 — i.e. the EV is parked at the office all day and only charges at night. The battery captures midday solar surplus and discharges to the EV between 8 PM and 12 AM, lifting effective self-consumption from ~30% to ~75%. Cost: ₹40,000–₹70,000 for a 5 kWh lithium-iron-phosphate (LFP) unit. Payback: 5–7 years on the battery alone, on top of the 4-year solar payback.

Will future government incentives change the EV + solar math?

The 2026 policy direction points one way — more integration, not less. MNRE has signalled support for combined solar + EV charging incentives in its 2025 rooftop policy review, and FAME-III (Faster Adoption and Manufacturing of Electric Vehicles, Phase III) is expected to include charging-infrastructure linked credits. State DISCOMs in Maharashtra, Karnataka, and Delhi have already announced time-of-day (ToD) tariffs that reward midday solar consumption. Installing today on PM Suryaghar economics locks in the ₹78,000 subsidy; any future EV-specific incentives become upside.

Can two EVs in the same household be charged from one rooftop solar system?

Yes — this is exactly the 7–10 kW sizing scenario in our recommended-size table. Two EVs at 6 kWh each per day need 12 kWh of daily solar generation just for the cars, plus base home load. A 7 kW system in a typical Indian city generates ~28–32 kWh/day, comfortably covering both vehicles and a 3-BHK home. The constraint is usually rooftop area, not solar capacity — ensure you have 450+ sq ft of unshaded south-facing roof.

How do I track PM Suryaghar subsidy disbursement if my EV-integrated system is commissioned?

Use the same tracking flow as any PM Suryaghar install. Once your DISCOM commissions the bidirectional net meter, the commissioning report is uploaded to pmsuryaghar.gov.in and the subsidy moves to disbursement queue. You’ll receive an SMS from PFMS (Public Financial Management System) confirming credit, typically within 30 days. The reference reads “PMSURYAGHAR-DBT” in your bank statement. If it doesn’t arrive in 30 days, raise a ticket on the portal with your application reference number.