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andig

PROFILE

Andig

Over an 18-month period, contributed to the evcc-io/evcc repository by delivering a robust suite of features and integrations focused on energy management, device interoperability, and automation. Developed and maintained core backend systems in Go, modernized APIs with OpenAPI specifications, and enhanced reliability through rigorous bug fixing and code refactoring. Integrated diverse hardware such as EV chargers, meters, and heat pumps, while expanding support for protocols like Modbus, MQTT, and OAuth2. Improved user experience with UI/UX updates in Vue.js and streamlined configuration management using YAML. The work emphasized maintainability, performance optimization, and seamless integration across embedded systems and cloud services.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

557Total
Bugs
135
Commits
557
Features
328
Lines of code
146,866
Activity Months18

Work History

April 2026

5 Commits • 3 Features

Apr 1, 2026

April 2026 performance-focused summary for evcc: Highlights of business value and technical achievement include automated energy optimization, extended device interoperability, improved observability, and stable WiFi compatibility with legacy hardware. The month delivered key features, fixed critical connectivity issues, and enhanced monitoring to accelerate issue resolution and ongoing maintenance.

March 2026

16 Commits • 9 Features

Mar 1, 2026

March 2026 (evcc-io/evcc) focused on performance, reliability, and UX improvements across core modules and integrations. Delivered features and fixes that reduce latency, improve interoperability, and strengthen system stability, enabling faster releases and scalable operation. Key outcomes: - Core feature enhancers and reliability work across caching, device control, and integrations. - Foundational improvements to resource management, logging, and service call patterns for maintainability and future scalability. - Stability-driven dependency updates to reduce risk and improve security.

February 2026

22 Commits • 14 Features

Feb 1, 2026

February 2026 (2026-02) monthly summary for evcc-io/evcc. Focused on delivering resilient energy management features, stabilizing integrations, and modernizing the codebase to enable faster future work. Business value delivered includes improved charging reliability, enhanced interoperability across hardware integrations, and a cleaner, more secure user experience. Key features delivered: - SAIC: simplify (#27130) — Simplified integration/workflow to reduce manual steps and improve maintainability. - Batteries: consolidate measurements api (BC) (#24887) — Consolidated measurements API to reduce duplication and improve data consistency. - Add location service (#27471) — Added a new location service integration for location-aware features. - Optimizer: publish battery forecast (#24633) — Exposed battery forecast to downstream consumers. - Templates: add timeRound (#27408) — Introduced timeRound function for more precise templating. - SHM: use friendly name (#27456) — Improves readability in SHM views. - Daikin Altherma 4 support (#27607) — Expanded hardware compatibility. - HTTP: send User-Agent header (#27549) — Standardized User-Agent propagation for better traceability. - chore: use Go 1.26 (#26786) — Upgraded compiler for performance and compatibility. Major bugs fixed: - Kostal Plenticore Gen2: fix battery charging (#27161) — Stabilized battery charging behavior for Kostal Plenticore Gen2 integration. - cli/eebus: remove (BC) (#27157) — Removed BC-related code/flag to simplify CLI path. - solis-hybrid-s: fix grid power (#27280) — Corrected grid power calculation. - Toyota: add missing x-channel header (#27542) — Fixed missing header exposure for Toyota integration. - InfluxDB integration: fix battery state (#27644) — Corrected battery state reporting in InfluxDB backend. - Revert change from PR #27652 (#27661) — Restored stability by reverting unintended change. - MQTT: correct phasesConfigured topic (BC) (#27598) — Fixed incorrect MQTT topic naming. - Tinkerforge Warp: fix websocket credentials (#27737) — Resolved credential handling issue. - Regressions/other fixes as noted in commits. Overall impact and accomplishments: - Stability and reliability: Reduced flaky behavior across integrations and improved data accuracy. - Interoperability and UX: Expanded hardware support and improved readability and templating for users and integrators. - Developer productivity and quality: Refined APIs, codebase cleanup, and toolchain modernization enabling faster future work. Technologies/skills demonstrated: - Go ecosystem: Go 1.26 upgrade, code refactors, and compiler optimizations. - Integration engineering: Added location service, Daikin Altherma 4 support, and HTTP header improvements across multiple services. - API design and templating: Consolidated measurements API and timeRound template function. - Security and reliability: User-Agent header consistency, forced password reset capability, and safer CLI paths.

January 2026

54 Commits • 31 Features

Jan 1, 2026

January 2026 (2026-01) monthly summary for evcc-io/evcc: Delivered meaningful feature refinements, reliability improvements, and architectural enhancements that strengthen energy optimization, integration reliability, and maintainability. Focused on extensibility, parameter discipline for the optimizer, template robustness, and performance, while advancing integration quality across Home Assistant, MBMD, and Loadpoint subsystems. These efforts reduce configuration risk, improve runtime efficiency, and lay groundwork for more accurate EV charging optimization and richer off‑grid/energy workflows.

December 2025

34 Commits • 25 Features

Dec 1, 2025

December 2025 was a focused iteration delivering core platform enhancements, broader automation capabilities, and reliability improvements across integrations and energy management. The team shipped significant user-facing features (Home Assistant integration improvements, OAuth/auth flows, and new device integrations), strengthened authentication UX, expanded hardware support (GPIO) and energy management capabilities (HEMS, Modbus suggestions, CLI outputs), and advanced reliability and developer tooling (backoff limits, template validations, token/auth improvements, and tooling/protobuf upgrades). These efforts collectively improve automation reliability, reduce onboarding friction, enable more performant energy management, and set the stage for future deprecations and platform evolutions.

November 2025

28 Commits • 16 Features

Nov 1, 2025

November 2025 (evcc-io/evcc) delivered a set of reliability enhancements, interoperability improvements, and energy-management features across the project. The work strengthened Home Assistant integration (auto-discovery, battery parameters exposure) and added dimming controls across key energy interfaces (EEBus, meters, SGReady). Startup performance was improved by starting the UI earlier, and the system’s stability was enhanced through targeted fixes to preconditioning, unmarshaling, and watchdog concurrency. The changes also expanded configurability and testing practices to reduce deployment risk and improve maintainability.

October 2025

52 Commits • 25 Features

Oct 1, 2025

October 2025 performance summary for evcc. Delivered substantial Cardata API enhancements with multi-client IDs and VIN support, updated data point documentation, and improved authentication/token handling with OAuth fixes and reduced logging. Implemented Tariffs performance optimization to lower CPU load in caching, updated Energinet data usage to 15-minute resolution, removed deprecated Energinet paths, and reduced Tariffs data volume. Added Battery Control to hold charging when the battery is dimmed. Expanded Home Assistant integration with meter and charger plugins, plus UI improvements and naming consistency, including deprecation of BMW/Mini in favor of Cardata. Introduced vehicle data streaming and broadened API coverage (missing endpoints) with JSON solar forecast support in Mqtt and related QoL improvements. Strengthened platform reliability with provider authorization refactor, Volvo OAuth callback fix, and redirect URI enforcement for Viessmann, along with code quality improvements and plan simplifications.

September 2025

22 Commits • 10 Features

Sep 1, 2025

September 2025 monthly summary for evcc project: Delivered a broad set of integrations, stability improvements, and UI/UX updates that enhance interoperability, safety, and energy optimization across VE charging workflows. Focused on business value through robust charging strategies, reliable OT/IoT integrations, and maintainable codebase.

August 2025

46 Commits • 36 Features

Aug 1, 2025

Concise monthly summary for 2025-08 highlighting key business value from API modernization, UI simplifications, and build/reliability improvements across the evcc repository. Delivered several high-impact features and critical fixes with clear cross-team impact, while maintaining backwards compatibility where feasible.

July 2025

20 Commits • 10 Features

Jul 1, 2025

July 2025 Highlights: Deliveries across AI automation, reliability, and data capability in evcc. Key features delivered included: AI-Assisted Issue Triage Workflow using Claude AI in GitHub Actions to auto-triage and label new issues; MCP Integration enabling AI-driven EV charging features; Tariff Data Caching to reduce fetches and improve performance; Loadpoint Phase Validation and Initialization to prevent misconfigurations and honor the charger’s actual phase count; Household Consumption Metrics Persistence to store energy data at 15-minute intervals. Major bugs fixed included: accurate charger status reporting for DaheimLadenMB, and improved session interruption handling with resets to maintain stability; and CO2 grid charging test coverage was added to improve QA. Overall impact: faster triage, more capable and stable charging automation, and richer data for analytics, driving operational efficiency and better business insights. Technologies/skills demonstrated: GitHub Actions, Claude AI, MCP, caching, Modbus template work, Playwright tests for QA coverage, and reliability engineering.

June 2025

27 Commits • 13 Features

Jun 1, 2025

June 2025 (2025-06) delivered a focused set of hardware integrations, feature enhancements, and reliability fixes across evcc. The work emphasized broadening hardware interoperability, improving energy management capabilities, and reducing clutter to stabilize operations and configuration workflows. Highlights include new charger supports, granular energy control, and improvements to the Loadpoint and PV persistence behavior, contributing to lower TCO for operators and better user experience for end customers.

May 2025

22 Commits • 9 Features

May 1, 2025

May 2025 monthly summary for evcc-io/evcc highlighting key features, bugs fixed, and impact. Focused on delivering business value through feature rollouts, reliability improvements, and expanded integration support. Highlights include SGReady standardisation, increased plugin reliability, new meter integration, and expanded device support.

April 2025

19 Commits • 8 Features

Apr 1, 2025

April 2025 (2025-04) monthly summary for evcc-io/evcc focused on delivering tangible business value through reliability, compatibility, and smarter charging across the platform. Key results include expanded device support, improved meter reliability, and enhanced planning logic that together reduce downtime, increase throughput, and improve user satisfaction for commercial and consumer deployments.

March 2025

62 Commits • 37 Features

Mar 1, 2025

March 2025 (2025-03) focused on stabilizing core integration paths, expanding test coverage, and modernizing UI/config UX to drive reliability, maintainability, and business value. Core protocol improvements were coupled with UI, forecasting, and observability enhancements to reduce operational friction and support data-driven decisions.

February 2025

36 Commits • 26 Features

Feb 1, 2025

February 2025 performance summary for evcc (Month: 2025-02). Delivered a mix of new capabilities, reliability improvements, and tooling updates across charging, solar forecasting, tariff planning, and developer workflow. The focus was on enabling smarter energy decisions for customers, reducing configuration and runtime risks, and modernizing the tech stack to improve future velocity.

January 2025

42 Commits • 24 Features

Jan 1, 2025

January 2025 (2025-01) performance highlights for evcc (repo: evcc-io/evcc). Key features delivered: - E3DC: Increased battery charge energy amount for larger capacities (#18011) (ff5ad907b9e5b74538032bb1f9fcecb75d0ef16f) - MyPV AC Thor: Added AC Thor support (#18034) (41da4199be2f97feb792b2e4061d33504ecef692) - Smart EQ: Use Mercedes API (#18044) (eaff6de83c20c81d09b36d1ddfbbd14eb1eeddaf) - Plugins: add timeseries (#18049) (927cd391ba06d48cc7c37cf183224e6c25ab5858) - Plugins: add charger provider (#18037) (5b21646c491e7f8904034a6baa8568f8b22ff8df) - Site: refactor measurements (#17943) (a83ad42a03690d99ab82408c2ba27c5a2443f5f6) - Grid measurements: align structure with PV and battery (#18063) (9dcb1fa0a7c08dd926b79309aa1f676a5fc6c8aa) Major bugs fixed: - Tariff: fix memory leak when using formula (#18098) (d78d4bda0213e9109a923ca0d0c810fa0bfc6bd9) - Zendure: fix meter updates (#18116) (91c0ab20be264c01ef9eeeb6cf8c871015fa6375) - AC Thor: fix enabled handling (#18199) (59ddfd5aaf8226a0a662521d9582cff5ff9b545c) - Loadpoint: validate fixed phase configuration (#18234) (516993bf50f527bbcb318ab6c144ba9563a0b221) - Tesla: fix token refresh (#18193) (ed6e6bbecc461be5a9ada5d0d7c67166c917acaf) Overall impact and accomplishments: - Expanded integration coverage and data fidelity across the EV charging ecosystem, improving energy management accuracy and reliability while enabling richer telemetry and caching enhancements. - Strengthened core architecture with targeted refactors (range-based loops, plugin structure, param cache, and caching) to support faster delivery and easier maintenance. Technologies/skills demonstrated: - Go, modular plugin architecture, and API integrations (Mercedes for Smart EQ, AC Thor, Tesla, etc.). - Performance optimization and memory management (Tariff, caching, HTTP cache sharing). - Code quality improvements and observability (range-based for loops, better logging, and metrics renaming).

December 2024

35 Commits • 24 Features

Dec 1, 2024

December 2024 performance summary for evcc (2024-12). Focused on delivering tariff-driven cost optimization, broadened device compatibility, reliability hardening, and large-scale codebase modernization to improve stability, maintainability, and business value. Key efforts spanned tariff API integrations, SG Ready charger support, robustness fixes, and architecture improvements that set the stage for faster iteration and better cost-aware charging.

November 2024

15 Commits • 8 Features

Nov 1, 2024

November 2024 delivered a cohesive set of business-value features and reliability improvements across the EVCC stack. Notable work includes Zendure device integration with regional support and MQTT data flows, time-aware tariff pricing via scripting, CLI enhancements for tariff display, a configurable push messenger, and expanded hardware support and integrations (LG ESS Home 15 and BMW ioBroker adapter). These changes deliver richer data, flexible pricing, and broader device interoperability while stabilizing core data pipelines through targeted bug fixes.

Activity

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Quality Metrics

Correctness89.4%
Maintainability87.2%
Architecture86.2%
Performance83.6%
AI Usage22.2%

Skills & Technologies

Programming Languages

CSSGoHTMLJSONJavaScriptJavascriptMakefileMarkdownSQLShell

Technical Skills

AI IntegrationAPI DesignAPI DevelopmentAPI DocumentationAPI ImplementationAPI IntegrationAPI designAPI developmentAPI integrationAWS SDKAlgorithm DesignAsynchronous ProgrammingAuthenticationAutomationBackend Development

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

evcc-io/evcc

Nov 2024 Apr 2026
18 Months active

Languages Used

GoYAMLgoyamlJavaScriptJavascriptMakefileShell

Technical Skills

API IntegrationBackend DevelopmentCLI DevelopmentConfigurationConfiguration ManagementData Processing