Twin Short Compact — 20 ft standard DC block
Four DC blocks in two end-to-end pairs, each pair with its own PCS & MV skid — the tightest twin arrangement on shallow sites
Overview
Four standard DC blocks in two end-to-end pairs, each pair with its own PCS & MV skid (20 ft or 40 ft). The sandwich: DC row, skid row, DC row.
| Parameter | Value |
|---|---|
| DC blocks | 4 × 20 ft |
| PCS & MV skids | 2 × 20 ft / 40 ft |
| Section size | 12.3 × 14.3 m (40.4 × 47.0 ft) |
Energy capacity
Section energy and power rating for this configuration.
| DC block | BESS section (4 blocks) | Duration |
|---|---|---|
| 6.25 MWh | 25 MWh / 6.25 MW | 4h |
| 6.25 MWh | 25 MWh / 12.5 MW | 2h |
| 5.016 MWh | 20.064 MWh / 10.032 MW | 2h |
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 DC block to its paired PCS & MV skid in the central row.
Single BESS section footprint
Land area at default clearance. When DC block doors face the skid, their service zones overlap — reducing total footprint.
DC block service doors facing the skid
99.7 × 47.0 ft
DC block service doors facing outward
99.7 × 66.6 ft
| Land use | Shared | Separate |
|---|---|---|
| Footprint | 30.4 × 14.3 m (99.7 × 47.0 ft) | 30.4 × 20.3 m (99.7 × 66.6 ft) |
| Total area | 435 m² (4,681 ft²) | 617 m² (6,644 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 · 16 DC blocks
369.2 × 47.0 ft
4 sections · 16 DC blocks
189.5 × 110.3 ft