Interoperability of Technologies Behind the Meter - Implementations...
summary
S2 arrives as a semantic standard (approved as EN 50491-12-2 in 2022) with open-source communication specs and concrete reference code — S2 Python and Rust libraries — and pilots that connect local HEMS to resource managers using Home Assistant+Modbus and cloud/local combos. Projects demonstrate real integration work: heat‑buffer and heat‑pump pilots, secure WebSocket handshakes, and a tutorial to build an S2 HEMS; remaining obstacles are OEM adoption, initial chicken‑and‑egg uptake, and ironing out secure pairing (avoiding OAuth2 in one implementation).
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chapters (20)
- 0:00Introduction to energy flexibility
- 1:50Why energy flexibility matters
- 2:53Energy management system categories
- 5:02Current maturity of EMS
- 6:48Conflicts in device control strategies
- 9:39Role of HEMS in coordination
- 11:06S2 standard overview
- 13:34S2 abstract flexibility concept
- 15:19S2 flexibility capabilities
- 16:45S2 open source resources
- 17:26S2 alliance initiative
- 18:06Nicolas on S2 implementations
- 21:12First project case study
- 22:15Second project with Itho Daalderop
- 24:40S2 adoption challenges
- 26:05Q&A on S2 vs EEBus
- 28:45Q&A on implementation complexity
- 29:48Q&A on Matter protocol
- 31:57Q&A on resource managers
- 34:14Future of S2 collaboration
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