EV Software Development Company — OCPP Charging, Fleet Electrification & Energy Management
Custom electric vehicle and clean energy software — OCPP 1.6 and 2.0.1 charge station management, EV driver apps, fleet electrification platforms, energy management systems, battery analytics, V2G integration, and OCPI roaming. 45+ EV projects. 15+ years.
What We Build for EV & Clean Energy
CSMS, EV driver apps, fleet electrification, energy management, charge network operator back-office, battery analytics, V2G, EV telematics, OCPI roaming, and EV analytics dashboards.
Charge Station Management System (CSMS)
OCPP 1.6 and 2.0.1 compliant charge station management — charge point registration and provisioning, real-time status monitoring (Available/Charging/Faulted), remote start/stop and unlock, load balancing (static and dynamic), RFID and app-based authentication, Plug & Charge (ISO 15118), firmware OTA updates, diagnostics, and multi-CPO network management.
EV Driver App (Find, Reserve & Pay)
Consumer-facing EV charging app — real-time charge point availability map (live status from CSMS), advance reservation, remote session start/stop via QR scan or NFC, live session monitoring (kWh delivered, cost, time), payment processing (card, Apple Pay, wallet credits), charging history, invoice download, favourite locations, and push notifications for session events and nearby availability.
Fleet Electrification Platform
Electric fleet management — EV fleet dashboard (SoC per vehicle, range, charging status, location), intelligent depot charging scheduler (overnight load balancing to avoid demand peaks), route planning with range and charging stop optimisation, driver assignment and trip logging, maintenance scheduling for EVs (tyre rotation, battery health alerts), CO2 reduction reporting, and TCO vs ICE comparison analysis.
Energy Management System (EMS) & Smart Charging
Grid-smart charging platform — real-time grid demand signals integration, dynamic load management across a charging site (avoid demand charges), solar and battery storage integration (optimise self-consumption), time-of-use tariff optimisation (shift charging to off-peak), demand response participation, site energy dashboard, and Modbus/BACnet integration with building energy systems.
Charge Network Operator (CNO) Back-Office
Multi-tenant back-office for charge network operators — charge point owner and site management, RFID card issuance and management, tariff and pricing management (per kWh, per minute, flat session fee), revenue reporting and settlement, roaming partner management (OCPI), customer support portal with session history, fault alerting and field technician dispatch, and white-label portal for site hosts.
Battery Health & Analytics Platform
Battery intelligence platform — SoC (state-of-charge) and SoH (state-of-health) tracking, degradation curve modelling, cycle count and depth-of-discharge analytics, abnormal cell voltage and temperature alerting, predictive battery replacement scheduling, second-life battery value assessment, and fleet-level battery health comparison dashboard for EV fleet managers and OEM warranty teams.
EV Technology We Use
OCPP/OCPI protocols, WebSocket CSMS architecture, IoT telemetry, React Native EV apps, Mapbox for charge maps, and the full clean energy tech stack.
How We Work with EV Companies
Full charge network platform, electric fleet management, or energy management system — structured for the operational nature of EV infrastructure.
- CPOs launching a new EV charging network
- Property developers deploying workplace or retail charging hubs
- Utilities building a public fast-charge network
- Fleet operators deploying depot charging for electric vehicles
- Last-mile delivery companies transitioning to electric vans
- Local councils electrifying their own vehicle fleets
- Car rental companies managing a mixed or EV-only fleet
- Corporate fleet managers adding EVs to employee car schemes
- Charging hubs wanting to avoid expensive peak demand charges
- Sites with solar PV wanting to maximise self-consumption for charging
- Fleet operators participating in grid ancillary services with V2G
- Building energy managers adding EV charging to existing EMS
EV Clients
Charge network operators, fleet companies, and property developers on building EV software with 1Solutions.
1Solutions built our OCPP 2.0.1 charge station management system and EV driver app from scratch. 300 charge points live across the UK, real-time status monitoring, RFID and app-based authentication, dynamic load balancing, and OCPI roaming integration with major networks. Our driver app reached 40,000 downloads in the first year. Exceptional EV protocol expertise.
We commissioned 1Solutions to build our fleet electrification platform for our 800-van electric delivery fleet. Depot charging scheduler, intelligent overnight load balancing, route planning with charging stops, driver app, and CO2 reporting for our sustainability team. Energy costs for charging reduced by 31% versus unmanaged overnight charging. Brilliant work.
1Solutions built our energy management system integrating our solar PV, battery storage, and 24 AC charge points. Real-time demand management means we have never triggered a demand charge event since launch. The V2G dispatch module generates additional revenue from grid services during peak demand windows. ROI achieved in under 12 months.
Why EV Companies Choose 1Solutions
OCPP/OCPI protocol depth, real-time WebSocket architecture, energy system integration, multi-tenant CPO architecture, geospatial capability, and operational post-launch support.
45+ EV & Clean Energy Projects
1Solutions has built CSMS platforms, EV driver apps, fleet electrification software, EMS systems, battery analytics, and OCPI roaming integrations for charge network operators, fleet companies, utilities, and property developers over 15+ years.
OCPP & OCPI Protocol Depth
OCPP 1.6 and 2.0.1 implementation for CSMS, OCPI 2.2.1 for roaming, Plug & Charge (ISO 15118), and OSCP for smart charging — real EV protocol expertise, not generic IoT wrapped in EV terminology.
Real-Time WebSocket Architecture
OCPP requires persistent WebSocket connections between CSMS and every charge point. We build reliable, scalable WebSocket server architectures with automatic reconnection, connection monitoring, and message queue replay for offline charge points.
Energy & Grid Integration Knowledge
OpenADR demand response, solar and BESS API integration, Modbus for building EMS, grid tariff APIs (time-of-use pricing), and VPP aggregator APIs — we understand the energy system context, not just EV charging in isolation.
Multi-Tenant CPO Architecture
Building for charge network operators means multi-tenant architecture with site host portals, CPO back-offices, eMSP driver access, and roaming hub integration — all with proper data isolation and billing attribution.
Geospatial & Mapping Capability
EV driver apps need real-time charge point availability on maps — Mapbox GL JS with live status overlays, route planning with charging stop optimisation, search by connector type and power level, and address/landmark search with proximity results.
Fleet Electrification Domain Knowledge
Depot charging scheduler, range anxiety management (realistic range with weather and load factors), charging stop planning for intercity routes, and CO2 offset calculation (market-based vs location-based) — we understand fleet operator requirements beyond the technology.
Post-Launch Operational Support
EV charging infrastructure is operational technology — faults in the CSMS mean revenue loss and customer dissatisfaction. We provide post-launch monitoring, alerting, and on-call support aligned to the operational nature of charge networks.
Build Your EV Software Platform
Share your EV software requirements and we will respond within 24 hours with a proposal, architecture recommendation, and team composition.
Technical proposal within 24–48 hours
OCPP, OCPI, and EV fleet specialists
NDA signed before any technical discussions
45+ EV projects — CSMS, fleet, EMS, V2G
Operationally-ready, SLA-backed delivery
Tell Us About Your EV Project
EV Software — FAQ
OCPP, CSMS, fleet electrification, smart charging, and V2G questions answered.