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A row of finished battery storage cabinets on a clean pale apron with an AC charging pillar standing level at the end of the row

Network · Group B of five · 3 of 24 sites · verified 2026-09-13

Group B —
new energy: three sites.

Three sites that make a project rather than a part: storage, generation modules and charging hardware, with the paperwork each one carries.

Send us your project load The full 24-site register
Group B
3
Supplier sites in this capability group, of 24 in the network
Share of network
3/24
The smallest group by site count — Group A is the largest at 7 of 24
List ISO 9001
2/3
Counted over this group's own members, not the network total
List RoHS
1/3
Read from each member's own published certification list
List CE
3/3
All three list CE; one of the three lists RoHS

01Group B · identity

Three roles that do not overlap.

3 of 24 sites3 rolesHeaviest export regime

Storage with microinverters, generation modules, and charging hardware with its own software platform. Fix the charger count first.

A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in one line
Fig. 01One behind-the-meter scheme, three sites. The charger fixes the site load; the site load fixes the storage size.
A finished cabinet battery storage unit beside a wall-mounted home storage unit R1

Storage & microinverters

5.12–30.72 kWh GTB 400–1600 W

EMS-ESS · 10 ms switchover, 10,000 cycles

A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet R2

Generation modules

TOPCon 430–720 W HJT to 730 W

EMS-SOLAR · 2 GW+ annual capacity

Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet R3

Charging hardware & platform

AC 7.4–22 kW DC 30–360 kW OCPP 2.0.1

ems-charge · MOQ from 1 unit

Lithium cells, mains-connected inverters and outdoor charging each carry their own export regimeCells and packs move under UN 38.3 documentation

02Group B · the members

Three members, their families and their numbers.

3 sitesFamilies & numbersOutbound links open the site

Each of the three publishes its own capacity, efficiency and warranty figures. None of them is a network average.

A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in one line
Fig. 02Group B — New energy. 3 independently operated sites, each with its own published numbers.
A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet
Fig. 032 GW+ annual capacity, trading since 2012. 100% EL imaging and a final IV flash test stored against each serial number.
A finished cabinet battery storage unit beside a wall-mounted home storage unit B-01

EMS-ESS

Wall-mounted, stackable and rack-cabinet LiFePO4 storage from 5.12 to 30.72 kWh, plus GTB grid-tie microinverters from 400 to 1600 W.

Wall-Mounted ESS 5 kW / 10 kW hybrid Stackable ESS 5.12–30.72 kWh Rack-Cabinet ESS 24/48/51.2 V 100 Ah Grid-Tie Microinverters GTB 400–1600 W
10 ms UPS-class switchover 10,000 cycles at 100% DOD 5 + 10 year warranty

Group B · New energy

A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet B-02

EMS-SOLAR

Manufacturer-direct N-type TOPCon, HJT and bifacial solar modules from a 2 GW+ factory, with OEM/ODM branding and project supply worldwide.

N-Type TOPCon 430–720 W HJT Premium up to 730 W Bifacial Dual-Glass All-Black BIPV Flexible & Lightweight
2 GW+ annual capacity 26.1% cell efficiency 900+ modules per 40' HC

Group B · New energy

Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet B-03

ems-charge

AC 7.4–22 kW wallbox chargers, DC 30–360 kW fast chargers, 96.5% peak-efficiency power modules and an OCPP 2.0.1 platform.

AC Chargers 7.4–22 kW DC Fast Chargers 30–360 kW E-Bike Charging 6–10 bays Charging Modules 30 kW air / 40 kW liquid OCPP 2.0.1 Platform
96.5% module peak efficiency AC 7.4–22 kW, DC 30–360 kW MOQ from 1 unit, 48 h quote

Group B · New energy

03Group B · published standards, member by member

Counted over Group B's own three members.

2 / 3 ISO 90011 / 3 RoHS3 / 3 CE0 publish none

2 of 3 list ISO 9001 · 1 of 3 lists RoHS · 3 of 3 list CE · 0 of 3 publish nothing. Every member publishes at least one standard code.

A finished cabinet battery storage unit beside a wall-mounted home storage unit B-01

EMS-ESS

CE
CE (LVD/EMC) IEC 62109-1 & -2 UN38.3 VDE-AR-N 4105 G99 EN 50549
A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet B-02

EMS-SOLAR

ISO 9001 CE
IEC 61215 IEC 61730 CE UL 61730 ISO 9001 ISO 14001 IEC 62941
Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet B-03

ems-charge

ISO 9001 RoHS CE
CE UL 2594 UL 2202 UL 2231 IEC 61851-1 ISO 15118 OCPP 2.0.1 ISO 9001 IATF 16949 TÜV RoHS FCC
Grid codes are country codesVDE-AR-N 4105, G99 and EN 50549 are grid-connection standards tied to a country. A single product rarely covers all of them, so name the country.
CE on a charger is a declarationIt is the manufacturer's declaration against the applicable directives — never a third-party certificate, and never a market approval on its own.
Transport rules change the paperworkCells and packs move under UN 38.3, with the 20 Wh cell and 100 Wh battery thresholds governing air and vessel handling.
A finished cabinet battery storage unit beside a wall-mounted home storage unit
Fig. 06Storage and grid code. EMS-ESS publishes IEC 62109-1 and -2, VDE-AR-N 4105, G99 and EN 50549 — grid codes are country-specific.
Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet
Fig. 07A charger is a networked device. IEC 61851-1, ISO 15118 and OCPP 2.0.1 decide whether the site can be operated, not just energised.

04Group B · where these products are catalogued

Where Group B's products are catalogued.

2 categories3 sites behind them

Storage and generation sit in one category; charging hardware is cross-listed into electric mobility, exactly as the member's own site records it.

A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in one line
Fig. 08Two categories. Storage and generation sit together; charging is cross-listed into electric mobility.

05Questions Group B buyers ask

Three questions Group B buyers ask.

3 questionsOne contract
Q1 Can one group supply the battery cabinet, the modules and the charger? Yes — three members, one contract, one set of export documents. The sequencing matters more than the parts: fix the charger count and OCPP version first.
Q2 What happens at the border? Lithium moves under UN 38.3 documentation and modules travel by container. We name the regime for the actual product rather than quoting one figure for the group.
Q3 Where is the schedule risk? Grid interconnection, not manufacturing. In major markets interconnection queues run into years, so the site's energisation date is set before the hardware is ordered.
A finished new-energy line-up: stackable storage units, a bifacial solar module, an inverter box, a wallbox and a DC charger cabinet
Fig. 09Three sites, one scheme. Storage, generation and charging are quoted together so the interfaces are one party's problem.
Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet
Fig. 10Charging starts at one unit. ems-charge publishes MOQ from 1 unit with a 48-hour quote, and a 96.5% module peak efficiency.
An export loading bay with an open container onto a pale apron, unlabelled cartons on pallets and blank paperwork on top
Fig. 11Export is heaviest in this group. Cells, inverters and outdoor chargers each carry their own documentation path.
A finished city e-bike in strict side profile with an integrated downtube battery and a teal chain-guard accent
Fig. 12Charging meets mobility. The same category page that carries two-wheelers carries the charging side of a fleet.
Digital calipers closed around a machined aluminium housing beside a blank inspection checklist and a sealed sample bag
Fig. 13Checked before it ships. One inspection schedule covers the cabinet, the modules and the chargers.
Related The 24-site register Energy storage, solar & EV charging EV charging & energy storage Export execution Group A — data centre & compute

06Start

Send us your project load and the site country.

Charger count, OCPP version and the country decide the storage size. Give us those three.

Recorded. An engineer will reply.

Written technical assessment, from eric@dfshk.cn.

Book a factory visit eric@dfshk.cn · +86 152 3512 7440