The claim still stands: one Sparq Quad inverter sits between grid, solar, battery and diesel, switching between them so a tower's 15–60 kW load never notices. About 5 seconds to confirm off-grid on loss of grid, per Jio's own install demo. 4 PV modules per unit, 97.5% peak efficiency. Full numbers and citations at /applications/towers/.
Grid, solar, battery, diesel — one Quad unit sits between all four and the load. Cut any of them below, or all of them, and see what the tower actually notices.