EV Charging Questions Answered From the
Basics to the
Boardroom
Straight answers on commercial EV charging in India — cost, installation, safety, subsidies, and sector-specific guidance for hospitals, plants, refineries and societies.
24
Detailed answers
6
Topic categories
12+
Years engineering
PAN
India service
Category A
General & Getting Started
The basics of commercial EV charging
What exactly is a commercial EV charging station, and how is it different from a home charger?
A home charger is a low-power AC unit (typically 3.3–7.4kW) that charges one vehicle slowly overnight. A commercial station uses DC fast-charging (60kW+) that delivers a meaningful charge in 30–90 minutes, handles dozens of sessions daily, includes payment and access control, and is engineered for outdoor high-usage environments. Commercial stations also require professional electrical design — they draw as much power as a small building.
How long does it take to charge an EV at a commercial fast charger?
A 60kW DC charger adds roughly 100–150km of range to a typical Indian four-wheeler EV in 25–35 minutes, depending on battery size and acceptance rate. Higher-output chargers (90/120kW) reduce this further. During assessment, SIOTA models realistic charge times for your property’s expected vehicle mix.
Is EV charging safe fire and electrical risk?
Certified chargers installed by licensed contractors carry multiple protection layers: over/under voltage, overload, short-circuit, earth leakage, grounding, surge, over-temperature. SIOTA units are IP55/IK10 rated, installed with mandatory earthing compliance. The real risk comes from uncertified hardware and unqualified installation — both eliminated by professional deployment.
What is the difference between AC and DC charging — which does a commercial property need?
AC charging is slower and suits locations where vehicles park many hours. DC fast charging delivers power directly to the battery — dramatically faster, right for properties where visitors, staff, or fleets need meaningful charge within an hour. SIOTA’s commercial deployments use DC fast charging; where a property also needs overnight bays (hotels, societies), we design a mixed configuration.
How much does it cost to install EV charging at a commercial property?
Four cost components: charger hardware (by power class), electrical infrastructure work, civil work, and the software/monitoring platform. The biggest variable is your site’s electrical readiness — which is why SIOTA quotes only after a free assessment, fully itemised. Beware any vendor quoting a fixed price before seeing your site. [PLACEHOLDER — indicative ranges if confirmed.]
Can any EV use the chargers at our property?
SIOTA’s DC chargers use CCS2 — the standard adopted by virtually all four-wheeler EV manufacturers in India (Tata Motors, Mahindra, MG, Hyundai, Kia, BYD, European brands). Battery voltage support from 150V to 1000V covers current and next-generation platforms.
Category B
Infrastructure & Electrical
What your site actually needs
What electrical infrastructure does a large property need for DC fast chargers?
A 60kW unit needs ~100A at 415VAC three-phase; a 120kW unit ~200A. Incoming supply is often adequate for initial deployment, but the Distribution Board feeding the charging area will likely need a dedicated feeder or circuit upgrades. Earth leakage, surge protection, and correct earthing are mandatory. SIOTA’s assessment identifies whether a DISCOM-side upgrade is needed — before you receive a cost estimate.
How many chargers can a building support without a supply upgrade?
Depends on supply headroom — contracted capacity minus current peak demand. A mall with 2MVA supply at 60–70% average load may support 8–12 DC fast chargers without upgrade; a building at 90%+ has almost none. SIOTA measures this from your actual load data before recommending a configuration.
Can a plant or refinery install chargers alongside high-load industrial infrastructure?
Yes, with careful engineering. Adding EV load onto variable production loads without coordination risks exceeding contracted demand or DISCOM penalties. SIOTA configures load management with dynamic load limiting. For petroleum/chemical facilities, hazardous area classification (Zone/ATEX) is assessed before any hardware is specified.
What civil works are typically required?
Cable trenching from DB to bays, surface preparation for floor-mounted bases, conduit installation, and earthing pits where needed. Multi-storey car parks need cable-routing coordination with your civil engineer. The assessment defines full civil scope before quotation.
Category C
Charger Technology & Compatibility
Under the hood of the Velocity Series
What is OCPP and why does it matter?
OCPP (Open Charge Point Protocol) is the international standard letting chargers communicate with any management system regardless of manufacturer. SIOTA chargers support OCPP 1.6J, upgradable to 2.0 — you’re never locked to one proprietary platform, and remote start/stop, access control, billing, load management, and diagnostics run from a single interface.
What happens to data and billing during a power outage?
Internal battery backup preserves session data, billing records, and system state for up to 40 minutes through a grid interruption. On restoration, the session resumes without re-authentication and billing records stay intact.
Can a single SIOTA charger serve two vehicles simultaneously?
Yes. All Velocity Series chargers have dual guns with Dynamic Load Sharing. One bay occupied: full rated output. Both occupied: power distributes intelligently in real time based on each vehicle’s State of Charge and acceptance rate — not a fixed 50/50 split.
Are the chargers suited to Indian grid conditions?
Yes. Power Factor above 0.98, Current THD below 5% — they draw clean power and don’t inject harmonic pollution into your facility’s network. Operating range: 415VAC ±10%, -25°C to 55°C — from basement car parks to open industrial yards.
Category D
Operations, Monitoring & Management
Life after installation
How does SIOTA monitor charger performance after installation?
Every installation connects via 4G, WiFi, or Ethernet. The platform tracks status in real time, logs every session, and raises automatic fault alerts before a user reports a problem. Multi-unit sites feed one dashboard; multi-site portfolios aggregate into a single view. [PLACEHOLDER — confirm scope.]
How do we manage billing across multiple tenants?
Session-level data segments by tenant via RFID or app authentication tied to tenant accounts, exportable to your billing process. Payment gateway integration available for charging visitors or third parties. [PLACEHOLDER — confirm scope.]
Can we get a custom-branded app instead of a generic interface?
Yes — a key SIOTA differentiator. Custom operator dashboard and driver-facing app carrying your identity: real-time energy per session, bay availability, session cost, receipts, history. For fleets: per-vehicle, per-driver, or per-department allocation. [PLACEHOLDER — confirm availability.]
What does maintenance involve, and what does the warranty cover?
Hardware warranty [PLACEHOLDER — confirm period] covering parts and breakdown support, PAN-India service network on defined SLAs. Quarterly preventive maintenance recommended for high-utilisation sites — most faults are caught remotely before causing downtime.
Category E
Sector-Specific
Hospitals, plants, refineries, societies
For a hospital, what are the specific considerations?
Critical power circuits (OT, ICU, life support) must not be disturbed; UPS and DG backups interact with any new load. SIOTA’s hospital assessments specifically review interaction with critical systems. Charging deploys on non-critical circuits isolated from life-safety systems — verified and documented, not assumed.
For a petroleum or chemical refinery, are standard commercial chargers appropriate?
Not in all areas. Hazardous Area classified zones (ATEX/IS/IEC 60079) cannot host standard commercial electrical equipment. Placement must be in designated safe areas — facility boundaries, employee car parks, administrative zones. SIOTA assesses classifications during the survey, never proposes installation in a classified zone, and documents the safe-area assessment.
For a manufacturing plant with shifts, how is charging managed around production?
We design around your shift pattern: higher-output chargers (90/120kW) to minimise turnaround, load management prioritising fleet charging during shift-change windows while coordinating with production load, with charge-to-readiness modelling done first.
For a residential society, how does community charging work without billing disputes?
App or RFID access control restricts charging to registered residents; every session is automatically metered and billed to the individual resident’s account. The managing committee gets a dashboard (usage, revenue, charger health), and load management keeps total demand within the society’s sanctioned supply.
Category F
Commercial Terms & ROI
The numbers behind the decision
What is the realistic ROI for a commercial property?
Two components: direct revenue (session fees where applicable) and indirect value (competitive positioning, tenant preference, retail dwell time, avoided compliance-retrofit costs). SIOTA’s assessment includes an honest utilisation projection for your specific property — we tell you what is realistic, not what closes a sale.
Are government subsidies available, and what is included in SIOTA's proposal?
Central and state incentives exist and change frequently — capital subsidies, concessional tariffs, demand-charge waivers in some states. [PLACEHOLDER — verify current schemes such as PM E-DRIVE status; quarterly review.] SIOTA identifies current applicability per property and never applies estimated subsidies until confirmed. Proposals are fully itemised: hardware, electrical installation, commissioning, platform subscription quoted separately. Not included by default: civil work beyond standard trenching, DISCOM supply upgrades, municipal approvals — all identified in the assessment so your final cost is visible before you commit.
Free Site Assessment Still have a question about your property?
Every commercial site is different. Book a free assessment and we’ll give you an itemised proposal — hardware, electrical, civil, platform — no fixed-price guesswork.