We publish the unassisted payback first because it is the number a hard-nosed investment committee will compute anyway. Six and a half to seven and a half years is respectable for building services plant with a twenty-year life — but on its own it is not why a developer signs.
The reason to sign is what happens around the payback. A certified, instrumented asset changes the financing conversation: GTFS 4.0 carries a 1.5% per annum profit-rate rebate with a government guarantee behind it, and sustainability-linked facilities and SRI sukuk price against exactly the kind of verified performance data HERS generates. A green rating lifts achievable rents and holds occupancy in a soft market. And from FY2027 the alternative to having this data is having to explain to an assurance provider why you do not.
The package is also modular. A developer who wants only the demand-side layer can take the storage and controls first and add recovery pathways at the next major refurbishment; the bus is specified from day one to accept them.
Stacking the incentives
What a Malaysian owner can draw on
GITA Asset — 60% allowance on qualifying green capital expenditure, MyHIJAU-listed equipment, application window to 31 December 2026.
GTFS 4.0 — 1.5% p.a. financing rebate, 60–80% government guarantee, administered through MGTC and participating banks.
GBI / GreenRE / MyCREST — HERS contributes across energy efficiency, renewable and recovered energy, sustainable maintenance and water efficiency criteria.
SRI sukuk and sustainability-linked financing — verified performance data supports use-of-proceeds reporting and KPI observation dates.