Paul Romieu contributed to the electricitymaps-contrib repository by engineering robust data ingestion, transformation, and configuration solutions for global energy datasets. He enhanced parser reliability and data quality through targeted refactoring, proxy management, and the integration of new data sources, using Python, YAML, and Pandas. Paul standardized capacity data formats, enriched regional datasets, and implemented granular licensing controls to improve forecasting and regulatory compliance. His work addressed anti-scraping barriers, streamlined configuration schemas, and expanded coverage for energy storage and production metrics. These efforts resulted in more accurate, maintainable, and reliable data pipelines, supporting analytics, reporting, and operational decision-making across the platform.
January 2026 monthly summary for electricitymaps-contrib focused on two core improvements: UI cleanup to declutter map configuration by hiding zone price information and enabling day-ahead price licensing across multiple zones to enhance pricing data availability. Also completed a targeted privacy/regulatory fix to remove price display for Thailand and other zones where necessary. The work enhances user experience, data reliability, and forecasting accuracy while maintaining regulatory compliance.
January 2026 monthly summary for electricitymaps-contrib focused on two core improvements: UI cleanup to declutter map configuration by hiding zone price information and enabling day-ahead price licensing across multiple zones to enhance pricing data availability. Also completed a targeted privacy/regulatory fix to remove price display for Thailand and other zones where necessary. The work enhances user experience, data reliability, and forecasting accuracy while maintaining regulatory compliance.
December 2025: Delivered significant data-enrichment and configuration improvements in electricitymaps-contrib. Key outcomes include enrichment of GB and regional capacity datasets with detailed yearly values across biomass, coal, gas, hydro, nuclear, solar, unknown, and wind, with provenance from Ember and bmreports; reworked regional capacity figures for improved accuracy. Implemented zone-mapping controls for day-ahead pricing: has_day_ahead_price_license flag and hide_day_ahead_price option to improve licensing compliance and data visibility. No explicit major bugs fixed this month; focus on feature delivery, data quality, governance and cross-team collaboration. This work enhances forecasting reliability and pricing transparency for business users.
December 2025: Delivered significant data-enrichment and configuration improvements in electricitymaps-contrib. Key outcomes include enrichment of GB and regional capacity datasets with detailed yearly values across biomass, coal, gas, hydro, nuclear, solar, unknown, and wind, with provenance from Ember and bmreports; reworked regional capacity figures for improved accuracy. Implemented zone-mapping controls for day-ahead pricing: has_day_ahead_price_license flag and hide_day_ahead_price option to improve licensing compliance and data visibility. No explicit major bugs fixed this month; focus on feature delivery, data quality, governance and cross-team collaboration. This work enhances forecasting reliability and pricing transparency for business users.
November 2025: Delivered major data and parser improvements for electricitymaps-contrib, enhancing data coverage, resilience, and granularity. Primary work includes migrating capacity data sources from IRENA to EMBER with new regional zones/configs, and cleansing outdated geothermal data and zero-entries to reflect current capacity. Strengthened CNDC ingestion reliability with a User-Agent header, robust HTTP error handling, and proxy usage to prevent data pull failures. Extended NED parser to support energy granularity with safeguards for unsupported values and correct conversions between kilowatt-hours and megawatts. These changes improve data accuracy, regional coverage, and operational reliability, delivering tangible business value such as more precise energy metrics, reduced data gaps, and better decision support for planning and reporting.
November 2025: Delivered major data and parser improvements for electricitymaps-contrib, enhancing data coverage, resilience, and granularity. Primary work includes migrating capacity data sources from IRENA to EMBER with new regional zones/configs, and cleansing outdated geothermal data and zero-entries to reflect current capacity. Strengthened CNDC ingestion reliability with a User-Agent header, robust HTTP error handling, and proxy usage to prevent data pull failures. Extended NED parser to support energy granularity with safeguards for unsupported values and correct conversions between kilowatt-hours and megawatts. These changes improve data accuracy, regional coverage, and operational reliability, delivering tangible business value such as more precise energy metrics, reduced data gaps, and better decision support for planning and reporting.
October 2025 monthly summary for electricitymaps-contrib: Expanded data coverage and parser capabilities to improve visibility into energy generation and storage in ERCOT and Peru, with enhanced tests ensuring data quality.
October 2025 monthly summary for electricitymaps-contrib: Expanded data coverage and parser capabilities to improve visibility into energy generation and storage in ERCOT and Peru, with enhanced tests ensuring data quality.
September 2025 monthly summary: Focused on reducing configuration complexity and technical debt in electricitymaps-contrib. Delivered a targeted cleanup by removing the deprecated estimation_method field from zone configurations and related data models, simplifying YAML configurations and reducing misconfiguration risk. The work was completed via a dedicated commit linked to issue #8358, paving the way for future schema simplifications and improved maintainability. This initiative enhances reliability for operators and supports smoother contributor onboarding.
September 2025 monthly summary: Focused on reducing configuration complexity and technical debt in electricitymaps-contrib. Delivered a targeted cleanup by removing the deprecated estimation_method field from zone configurations and related data models, simplifying YAML configurations and reducing misconfiguration risk. The work was completed via a dedicated commit linked to issue #8358, paving the way for future schema simplifications and improved maintainability. This initiative enhances reliability for operators and supports smoother contributor onboarding.
Concise monthly summary for 2025-08 focusing on cleanup-driven improvements in electricitymaps-contrib. Two high-impact bug cleanups completed, improving configuration clarity, test reliability, and maintainability.
Concise monthly summary for 2025-08 focusing on cleanup-driven improvements in electricitymaps-contrib. Two high-impact bug cleanups completed, improving configuration clarity, test reliability, and maintainability.
June 2025 — ElectricityMaps contributor focus centered on enhancing data reliability for the Cyprus dataset in the electricitymaps-contrib repository. Delivered a Cyprus Data Parser Webshare Proxy with Refetch Decorators to improve data fetch reliability and enable country-specific fetch cadence and proxy usage. This work reduces fetch failures and improves data freshness for Cyprus, supporting more stable downstream analytics and dashboards. Delivered via commit 5df983b99cd6fb2cdf69a221ab1a686c61a704a0 with message "(feat) adding webshare proxy (#8249)".
June 2025 — ElectricityMaps contributor focus centered on enhancing data reliability for the Cyprus dataset in the electricitymaps-contrib repository. Delivered a Cyprus Data Parser Webshare Proxy with Refetch Decorators to improve data fetch reliability and enable country-specific fetch cadence and proxy usage. This work reduces fetch failures and improves data freshness for Cyprus, supporting more stable downstream analytics and dashboards. Delivered via commit 5df983b99cd6fb2cdf69a221ab1a686c61a704a0 with message "(feat) adding webshare proxy (#8249)".
May 2025 monthly summary for electricitymaps-contrib focused on data quality improvements in capacity data for Indian regions. Delivered Capacity Data Formatting and Standardization by reformatting capacity data entries to a consistent list structure (datetime, source, value) to improve consistency, downstream processing, and analytics reliability. The change is anchored to commit f0b2502bfe494d59fea0a72322072d168e684933 (india cap).
May 2025 monthly summary for electricitymaps-contrib focused on data quality improvements in capacity data for Indian regions. Delivered Capacity Data Formatting and Standardization by reformatting capacity data entries to a consistent list structure (datetime, source, value) to improve consistency, downstream processing, and analytics reliability. The change is anchored to commit f0b2502bfe494d59fea0a72322072d168e684933 (india cap).
April 2025: Focused on reliability of the CY historical data source in electricitymaps-contrib. Implemented a targeted bug fix to restore data retrieval by bypassing anti-scraping blocks, enabling the parser to fetch historical data again. The change fixes a 403 barrier by adding a User-Agent header to HTTP requests, restoring data flow and reducing historical data gaps. The work supports ongoing dashboards, historical analytics, and customer reporting by ensuring dataset completeness.
April 2025: Focused on reliability of the CY historical data source in electricitymaps-contrib. Implemented a targeted bug fix to restore data retrieval by bypassing anti-scraping blocks, enabling the parser to fetch historical data again. The change fixes a 403 barrier by adding a User-Agent header to HTTP requests, restoring data flow and reducing historical data gaps. The work supports ongoing dashboards, historical analytics, and customer reporting by ensuring dataset completeness.
March 2025 monthly summary: Delivered cross-regional capacity data quality and ingestion improvements and updated social media visuals. Business value includes more accurate capacity forecasting, reduced data duplication, and stronger engagement. Key outcomes include finer-grained historical capacity data, migration of AE/BH sources to IRENA, refined parsers for CAMMESA and GB capacities, and refreshed social previews in light/dark modes.
March 2025 monthly summary: Delivered cross-regional capacity data quality and ingestion improvements and updated social media visuals. Business value includes more accurate capacity forecasting, reduced data duplication, and stronger engagement. Key outcomes include finer-grained historical capacity data, migration of AE/BH sources to IRENA, refined parsers for CAMMESA and GB capacities, and refreshed social previews in light/dark modes.
January 2025 (2025-01) monthly summary for electricitymaps-contrib. Focused on improving data ingestion accuracy, reliability, and maintainability through targeted feature delivery and responsible cleanup. Major outcomes include: 1) Geospatial Bounding Box Support for Country Configs and Weather Preprocessing — added and refined bounding boxes for BN, EC, GU, JO, PK, and VE across country YAML configurations and weather pre-processing to enable precise geographical filtering. 2) Cleanup: Removed non-functional production parsers (AL, NC, CA) to streamline data sources and reduce error surface. 3) El Salvador historical electricity generation data fetching in ESTADISTICO_UT parser — enhanced ESTADISTICO_UT.py to fetch historical data by supporting target datetime in requests and adding a refetch frequency mechanism.
January 2025 (2025-01) monthly summary for electricitymaps-contrib. Focused on improving data ingestion accuracy, reliability, and maintainability through targeted feature delivery and responsible cleanup. Major outcomes include: 1) Geospatial Bounding Box Support for Country Configs and Weather Preprocessing — added and refined bounding boxes for BN, EC, GU, JO, PK, and VE across country YAML configurations and weather pre-processing to enable precise geographical filtering. 2) Cleanup: Removed non-functional production parsers (AL, NC, CA) to streamline data sources and reduce error surface. 3) El Salvador historical electricity generation data fetching in ESTADISTICO_UT parser — enhanced ESTADISTICO_UT.py to fetch historical data by supporting target datetime in requests and adding a refetch frequency mechanism.
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