ISV IEEE Smart Village
← Meter Interoperability

Vendor Study

Jun 2026 · pipeline + protocol benchmark · citations required

Living comparison for village-meter procurement: cited protocol scores, outreach status, and contacts. Target northbound contract: northbound MQTT v0.1 + VMRS. Web/datasheet pass only — nothing marked tested.

1 · Protocol benchmark — DLMS, STS, VMRS, and northbound APIs from datasheets and public docs (doc / claim / no / —). Grouped by vendor role; do not compare SunSpec inverter rows to STS meter rows.
2 · Outreach pipeline — brochures, pricing, field references, and ISV follow-up history. Operational, not proof of interoperability.
3 · Directory & context — full contact directory, generation-side DER notes, industry cost bands, and bibliography (expand below).
Method · scoring legend · known gaps

8 industry + 20 vendor-primary + 3 ISV sources (51 citations). Cells: doc / claim / no / —. VMRS = documented OBIS export, not full ICD. Confidence T0–T3.

Gaps this pass

No public API for SteamaCo Nimbus or SparkMeter ThunderCloud. Inhemeter DLMS docs partner-gated. Rare published $/meter pricing.

Field — meter / CIUDLMS/COSEM · STS · Modbus · proprietary RF/OEM
Edge — DCU / EMSDLMS client/server · RF mesh / PLC · LTE uplink
Cloud — platformIEEE 2030.5 · REST/MQTT · proprietary HES/MDMS

Protocol benchmark

One table, three vendor classes. VMRS = documented OBIS export toward northbound-mqtt-v0.1, not a full COSEM ICD. Confidence T0–T3.

VendorRoleProductDLMSSTSVMRSSunSpec2030.5TransportNorthboundLock-in$/connConf.Evidence
Meter OEM & DCU hardware
Donsun meter + DCU DS1000/1600/3000, DSC100 DCU doc doc doc N/A N/A RF, PLC, GPRS/3G/4G on DCU; RS-485 DLMS HDLC [28][29] DLMS → HES (HES not bundled) — — ISV quote only T1 IEC 62056 + STS on DS1000 brochure [4]; DSC100 DLMS+DL/T698 [28]
Inhemeter meter i210 / i310 (DDZ1513 / DTZ1513) doc doc doc N/A N/A PLC, RF, GPRS, 3G/4G, NB-IoT modules [14][15] DLMS COSEM server; CIU via PLC/RF — — T1 OBIS/IEC62056-21 optical on brochure [15]
Calin meter CAM168-G, CAM368-G doc doc claim N/A N/A PLC / RF / GPRS / LoRa options [18] DLMS to AMI head-end — — T1 IEC62055 + IEC62056 on product page
Mojec meter + AMI STS prepay + PLC AMI claim doc claim N/A N/A PLC NAN; GPRS WAN via concentrator [16] Proprietary AMI + STS vending — — T1–T2 DLMS/COSM in AMI slide deck [17]; STS on R&D page
Full-stack AMI & mesh platforms
SteamaCo full-stack Nimbus AMI + Savi interop doc claim — — Savi: GPRS/PLC/RF mesh [2] REST API (customer login); MPM plugin sync [1][30] partner platform + SaaS [23] T1–T2 Claims DLMS/COSEM interoperable HES/MDMS [3]; Savi STS + mobile money [2]
SparkMeter full-stack ThunderCloud + mesh meters no public — — N/A N/A Proprietary RF mesh; low-bandwidth IP uplink [9][13] ThunderCloud (proprietary) closed $40–110 band [22] T2 EFC lists ~$80 MSR — single data point, not verified quote [9]
Okra mesh nanogrid Harvest + Pod N/A N/A N/A — — DC mesh; Harvest cloud [19] Harvest cloud; mobile money + cash closed — T1 Prepaid kWh or daily rate in Harvest [19]; no public API spec
Edge platform (not a revenue meter)
New Sun Road platform Stellar Edge + OS N/A N/A N/A — — Modbus RTU, CAN, REST cloud UI [11][12] Modbus RTU, CAN, REST cloud UI agnostic platform T1 Modbus RTU documented; SunSpec not claimed on vendor pages
Named in pipeline — no protocol sheet retrieved this pass
Hexing · Kelin meter Utility AMI Hexing HXP100DII cited in industry minigrid examples [22] — no vendor protocol sheets retrieved
Schneider · Jinco · Growatt · Studer · Dohon mixed — Original watch list — no verified protocol documentation retrieved this pass

Outreach pipeline

Procurement follow-up only — see protocol columns above for STS/DLMS/VMRS scores.

BrandSystemRoleOutreachBrochurePricingField refsNotes
Donsun DS series meters + DSC100 DCU meter + DCU Yes ISV Yes [28] ISV quote ISV Deployed in multiple African utilities per vendor trade listings [5] SteamaCo lists Savi meters as Donsun-supplied [6]
SteamaCo Nimbus AMI + Savi meters + DCU full-stack Yes ISV Yes ISV — Kenya mini-grid deployments cited (e.g. Kudura) [7] API exists; public developer portal not found [1][8]
New Sun Road Stellar Edge + Microgrid OS platform Yes ISV Yes [11][12] — Vendor claims 1,000+ microgrids / 21 countries [10] Not a revenue meter — edge controller + cloud OS
SparkMeter ThunderCloud + RF mesh meters full-stack — partial [9] quote only [13] 22 countries per EFC profile; Haiti, Kenya, Tanzania listed [9] Proprietary mesh + cloud; no public DLMS spec found [9]
Inhemeter i210 / i310 (DDZ1513 / DTZ1513) meter — Yes [14][15] — — Partner DLMS docs gated per ISV field notes ISV
Mojec STS prepay + AMI (Nigeria) meter + AMI — partial [16][17] — IBEDC vending; Port Harcourt & Ikeja AMR cited [16] DLMS mentioned in Mojec AMI deck [17]
Calin CAM168-G / CAM368-G etc. meter — Yes [18] — — DLMS/COSEM + STS on same product lines
Okra Pod + Harvest platform mesh nanogrid — partial [19][20] — Haiti, Cambodia, Philippines case studies [20][21] DC mesh + prepaid billing — not utility DLMS AMI
Hexing · Kelin Utility AMI meter Named in industry minigrid meter examples (Hexing HXP100DII) [22] — no vendor protocol sheets retrieved this pass
Schneider · Jinco · GroWatts · Studer · Dohon — mixed On original watch list — no verified protocol documentation retrieved this pass
Vendor contacts (full directory)
VendorWebsiteEmail / phoneAddress / regionForm / portalISV prior contactNotesSrc
Donsun donsuntech.com [email protected]
[email protected]
+86 755 86565087		 Shenzhen Software Park, Nanshan, Shenzhen — [email protected] Sales contact from ISV proposal PDF matches catalog [28][47]
SteamaCo steama.co UK: +44 161 505 2012
Africa: +234 908 797 2825		 Abuja, Nigeria (Africa office listed) Contact form Warren Scott
[email protected]		 No public sales email on contact page; API/partner docs behind customer login [32][48]
New Sun Road newsunroad.com [email protected]
+1 510-550-5252		 Richmond Field Station, Richmond, CA Contact form Adrienne Pierce
[email protected]		 Sales inquiry option on form [33][49]
SparkMeter sparkmeter.io [email protected] (general)
[email protected] (customers)		 Washington DC area (EFC lists HQ) Request quote — Quote/demo via web form; ThunderCloud login separate [34][13]
Inhemeter inhemeter.com [email protected]
[email protected] (support)
+86 755 26616686		 Nanshan, Shenzhen Contact page — DLMS interop docs reported partner-gated (ISV) [35]
Mojec mojecglobal.com [email protected]
Lagos / Abuja: 014537736		 Lagos & Abuja, Nigeria Contact + live chat — Terms page also lists [email protected], [email protected] [36]
Calin calinmeter.com [email protected]
+86 15815515503 (WhatsApp)		 Universal Intelligence Center, Shenzhen Contact page — Separate export site szcalinmeter.com also exists — verify which entity you need [37]
Okra okrasolar.com [email protected] Nigeria / Cambodia ops (case studies) Contact form — Harvest platform login separate; 3 business day reply stated on form [38][19]
Hexing hxgroup.com [email protected]
+86 571 28020769 (HQ)
+86 571 28289672 (meter division)		 Hangzhou, China; regional offices on contact page Regional contacts — Africa: [email protected] (+27 011 078 0400) listed on group contact page [41]
Kelin sinokeelectric.com +86 311 85231911 (trade listing)
[email protected] (LinkedIn only)		 Shijiazhuang, Hebei, China — — Shijiazhuang Kelin Electric — STS/DLMS meters cited on trade sites; no contact page retrieved this pass [50]
Schneider se.com US support: 877-342-5173 Global — regional offices Get a quote / contact — No single microgrid sales email; use online inquiry [45]
Victron victronenergy.com [email protected]
+31 (0)36 5359700		 Almere, Netherlands (HQ) Regional sales managers — Generation monitoring — dealer network for installs [39]
Enphase enphase.com [email protected]
(833) 963-3820, option 5		 US-focused commercial line Commercial inquiry form — 2030.5 / SunSpec docs on support site [40]
Deye deyeinverter.com [email protected] (sales)
+86 574 8612 0560		 Ningbo, China Contact page — Inverter / hybrid — not revenue metering [51]
Fronius fronius.com [email protected] (US solar sales) US + global regional offices Partner inquiry — Modbus/SunSpec integration common via Venus OS [44]
Growatt (watchlist: GroWatts) growatt.com [email protected] (sales)
[email protected]
+86 755 29515888 (HQ)		 Shenzhen HQ; many regional offices Global office list — Original watchlist spelling “GroWatts” likely means Growatt [43]
Studer studer-innotec.com [email protected]
+41 27 205 60 80		 Sion, Switzerland Contact form — Off-grid inverter/charger — not revenue metering [42]
Jinco — — — — — Not identified this pass. If meant JinkoSolar: jinkosolar.us/professionals (regional forms; [email protected] for US product Q&A) —
Dohon — — — — — Brand not identified. Possible confusion with Eastron (东鸿) DIN-rail Modbus meters: [email protected], +86 400-996-9296 — not verified as same company [46]
Generation-side monitoring (not revenue meters)

Parallel DER / inverter track — listed for contact-directory completeness. Do not score SunSpec or 2030.5 on STS revenue-meter rows in the protocol benchmark.

VendorDLMSSunSpec2030.5TransportNotesSources
Victron N/A integrates N/A Modbus-TCP gateway via GX; proprietary VE.Bus closed [24][25] GX exposes Victron register map (not SunSpec-native). Venus OS can read SunSpec inverters via Modbus. [24][25]
Enphase N/A 700 range client IQ Gateway REST; SunSpec Modbus TCP (support-enabled) [26][27] 2030.5 as utility-grid client, not village prepaid layer. CT metering via local API. [26][27]
Deye · Fronius N/A — — — Not researched this pass — Fronius commonly integrated via Modbus/SunSpec in Victron docs [25] —
Industry cost bands · key findings · bibliography

Industry cost bands (independent — comparison only)

MetricRangeContextSource
Installed smart meter (all types)$11–$5512 providers surveyed; prepaid avg ~$41[23]
Single-phase smart meter hardware$40–$60Meter only[22]
Meter + DCU/antenna/accessories$80–$110Per connection[22]
SaaS / software licence5–20% of hardware / yr; ~$0.80–$1/customer/mo citedCan rival low ARPU[22][23]
ISV field anecdote (legacy prepay)$600–$1,500Sparkmeter-class deployments — ISV problem framing, not a price listISV notes

Key findings

Sources bibliography

V vendor · I independent · ISV internal

  1. V SteamaCo — Off-grid IoT smart metering platform (API, DCU, Savi)
  2. V SteamaCo — Savi smart meters (STS, GPRS/PLC/RF mesh, AES-128)
  3. V SteamaCo — Nimbus AMI (DLMS/COSEM interoperable claim, MDMS/HES)
  4. V Donsun trade listing — DS1000 STS brochure text (IEC 62056, IEC 62055, STS association claim)
  5. V Donsun trade listing — Smart prepayment meter (Africa deployment countries listed)
  6. V SteamaCo — Products (Savi provided by Donsun Shenzhen)
  7. I UKRI Energy Catalyst — SteamaCo Kenya case study
  8. V SteamaCo — Terms & Conditions (API/UI interfaces, customer login)
  9. I Engineering for Change — SparkMeter product profile (mesh, ThunderCloud, countries, ~$80 MSR)
  10. V New Sun Road — Homepage (deployment scale claims)
  11. V New Sun Road — Stellar Edge (Modbus, CAN, USB, RJ-45)
  12. ISV New Sun Road — Stellar Edge 3.0 datasheet (RS-485 Modbus RTU, IP54)
  13. V SparkMeter — Homepage (mesh, minigrid focus; quote on request)
  14. V Inhemeter — i210-a1 product page (STS, PLC/RF/GPRS)
  15. V Inhemeter — i310 product page (DLMS/COSEM, STS, NB-IoT)
  16. V Mojec — R&D page (STS, PLC AMI, IBEDC vending)
  17. V Mojec — AMI slide deck (DLMS/COSM, GPRS concentrator architecture)
  18. V Calin — CAM168-G product page (DLMS/COSEM + STS)
  19. V Okra — Harvest platform (billing, tariffs, mobile money)
  20. I Okra — Haiti mesh-grid case study
  21. I PFAN — Okra Solar profile (Cambodia, Philippines, Indonesia)
  22. I CrossBoundary — Smart meters for mini-grids ($40–110, SaaS, Hexing example)
  23. I Energy 4 Impact — Billing models for minigrids (PDF, $11–55 installed, SparkMeter/SteamaCo cited)
  24. V Victron — Data communication technical note (Modbus-TCP, VE.Bus closed)
  25. V Victron — GX Modbus-TCP manual
  26. V Enphase — IEEE 2030.5 utility server integration
  27. V Enphase — SunSpec 700 Modbus TCP (support-enabled)
  28. ISV ISV DokuWiki — Donsun REIc Cameroon proposal PDF (DSC100 DLMS, STS meters)
  29. ISV ISV DokuWiki — MicroPowerManager / Donsun DSC100 notes
  30. I MicroPowerManager — SteamaCo integration guide (third-party API sync)
  31. I STS Association — What is STS (IEC 62055, DLMS token carrier note)
  32. V SteamaCo — Contact page (phones, web form; Abuja address)
  33. V New Sun Road — Contact page ([email protected], +1 510-550-5252)
  34. V SparkMeter — Customer service (contact@, [email protected])
  35. V Inhemeter — Contact page (info@, [email protected])
  36. V Mojec — Contact page ([email protected])
  37. V Calin — Contact page ([email protected])
  38. V Okra — GitHub organization ([email protected])
  39. V Victron — Contact page ([email protected])
  40. V Enphase — Commercial installers page ([email protected])
  41. V Hexing — Group contact page ([email protected], regional emails)
  42. V Studer — Contact page ([email protected])
  43. V Growatt — Global contact page ([email protected], regional offices)
  44. V Fronius — Solutions partner page ([email protected])
  45. V Schneider — Contact / get a quote
  46. V Eastron — Contact page ([email protected] — possible Dohon/Eastron confusion, unverified)
  47. ISV ISV DokuWiki — Donsun monitor notes ([email protected])
  48. ISV ISV DokuWiki — SteamaCo monitor notes ([email protected])
  49. ISV ISV DokuWiki — New Sun Road monitor notes ([email protected])
  50. I LinkedIn — Shijiazhuang Kelin Electric ([email protected] — not on vendor homepage this pass)
  51. V Deye — Contact page ([email protected])

May 2026 notes