13 guides
EV Charging & OCPP
OCPP guides written from building a Central System rather than from reading the specification. They cover the version choice, the vendor quirks that only surface in production, and the build-versus-buy decision that comes before any of it.
If you operate chargers in India, the payments and compliance pieces matter as much as the protocol ones.
See our EV charging workMobility · 29 min read
EV Charging Rules Every Indian Company Has to Follow in 2026 (And the Software That Proves It)
Buying chargers is the easy part. The Ministry of Power guidelines, the PM E-DRIVE subsidy conditions and your state bui…
Mobility · 12 min read
Unified Bharat e-Charge (UBC), Explained for EV Operators
UBC puts EV charging inside BHIM over the Beckn protocol. What it is, how it sits next to OCPP and OCPI, and what operat…
Mobility · 8 min read
OCPP 1.6-J Source Code: Five Open-Source Codebases Worth Reading Before You Write a CSMS
Three open-source central systems and two protocol libraries, with licences and OCPP versions checked against the reposi…
Mobility · 13 min read
OCPP 1.6-J by Example: The Eight Messages a CSMS Has to Get Right, With Real Payloads
The exact JSON a charger sends and a CSMS must answer, message by message, with the fields that matter for billing and t…
Mobility · 13 min read
EV Charging Tariffs in India: Per kWh, Per Minute, Idle Fees and the Maths Behind the Bill
How a charge point operator in India should price a session, what the bill is actually computed from, why offline sessio…
Mobility · 14 min read
OCPP and UPI: How EV Chargers in India Can Take Payments Without an App
The Open Charge Alliance's two models for UPI payments at EV chargers, how they map onto OCPP under the hood, and what y…
Mobility · 23 min read
OCPP 2.0.1 Security for EV Charging Operators (2026)
Securing an OCPP 2.0.1 EV charging network in India: TLS/mTLS, OCSP revocation, signed firmware, and offline authorizati…
Reading up before you hire someone? We will give you a written scope and a fixed price, and you can compare that against the guides.
Get a fixed-price quoteLessons · 8 min read
We Built the Software for an EV Cycle, Then Drove to IIT Jammu to Watch It Roll
The behind-the-scenes story of building the app, firmware and dashboard for an EV cycle, and what the day at IIT Jammu w…
Mobility · 12 min read
EV Charging Software Companies in India (2026): Statiq CSMS Pricing Compared
There are ~14 EV charging software (CSMS) companies in India in 2026. We built PlugEV and audited 9. The honest comparis…
Mobility · 11 min read
Building an OCPP CSMS: What Worked, What Broke, and When to Buy
Honest breakdown of building a production OCPP 1.6-J CSMS in India: message flow, transaction lifecycle, vendor quirks, …
Mobility · 10 min read
OCPP 2.0.1 Migration Playbook for Indian Operators: When to Move, What Breaks, What's Worth It
When does an Indian EV operator on OCPP 1.6-J really need 2.0.1? Honest cost/benefit, ISO 15118 plug-and-charge, and a m…
Mobility · 9 min read
CCS2 vs CHAdeMO in India 2026: Which DC Standard to Pick (and Why It Mostly Doesn't Matter Anymore)
Honest 2026 take on India's DC fast-charging connectors: CCS2, CHAdeMO, GB/T, and AIS-138 standard, what to install at a…
Mobility · 10 min read
Building an EV Charging Station with RFID Authentication: What We Learned
A practical guide for anyone building or operating EV charging stations in India: how the RFID + OCPP stack fits togethe…