Twin Long — 20 ft standard DC block
Two DC blocks joined on their blind long sides with a PCS & MV skid beside the cable ends
Overview
Two DC blocks joined on their blind long sides, doors facing outward both ways. One PCS & MV skid (20 ft or 40 ft) sits beside the cable ends.
| Parameter | Value |
|---|---|
| DC blocks | 2 × 20 ft |
| PCS & MV skids | 1 × 40 ft @2h · 20 ft @4h |
| Section size | 21.3 × 5.1 m (69.7 × 16.7 ft) |
Energy capacity
Section energy and power rating for this configuration.
| DC block | BESS section (2 blocks) | Duration |
|---|---|---|
| 6.25 MWh | 12.5 MWh / 6.25 MW | 2h |
| 6.25 MWh | 12.5 MWh / 3.125 MW | 4h |
Clearance and spacing defaults
Service clearance and spacing used by default. All values are adjustable in BESSLayout.
| Setting | Default |
|---|---|
| DC block door side | 3.5 m (11.5 ft) |
| DC block cable end | 2 m (6.6 ft) |
| PCS & MV skid | 3 m (9.8 ft) all sides |
| DC block stacking gap | 0.2 m (0.7 ft) |
| Fire separation (between DC blocks of different sections) | 5 m (16.4 ft) |
Cable layout
DC cables run from each block's cable end to the adjacent PCS & MV skid.
Single BESS section footprint
Land area at default clearance. When the cable end faces the skid, its clearance zone overlaps with the skid zone — no extra width on that side.
Cable-end clearance shared with skid zone
79.6 × 39.6 ft
Cable-end clearance extends outward
86.1 × 39.6 ft
| Land use | Cable inward | Cable outward |
|---|---|---|
| Footprint | 24.3 × 12.1 m (79.6 × 39.6 ft) | 26.3 × 12.1 m (86.1 × 39.6 ft) |
| Total area | 293 m² (3,152 ft²) | 317 m² (3,412 ft²) |
Multiple BESS sections footprint
Land area for four sections, in a row and in a 2 × 2 grid, at the default spacing.
4 sections · 8 DC blocks
318.2 × 39.6 ft
4 sections · 8 DC blocks
159.1 × 72.7 ft