PT Surabaya Industrial Estate Rungkut, the state-owned developer of industrial estates in East Java, has won an award for green industrial management from CNN Indonesia, presented at an event in Surabaya. The company's president director, Didik Prasetiyono, accepted it and credited employees, tenants and investors.

The award is a media company's judgement rather than a certification, which matters when the surrounding claims are about environmental performance. What SIER can point to instead are specific systems at named sites.

What is actually installed

The clearest is a waste processing facility at its Pasuruan estate, which the company runs on a zero-waste-to-landfill basis: waste is recycled, reused or converted into refuse-derived fuel, recycled plastics and organic fertiliser rather than buried. SIER has also introduced a zero-liquid-discharge programme for wastewater in its industrial zones, meaning the water is treated to a standard that allows it to be reused in production. Both are expensive to build and cheap to promise, and a zero-waste label is only as good as the accounting of what leaves the gate. Zero liquid discharge is the harder claim of the two: it requires that every litre leaving the site be metered and treated, and operators that fall short of it rarely announce the fact.

The estate also runs solar panels, electric vehicle charging points and wastewater treatment plants. Didik, who is also a vice chairman of the Indonesian Industrial Estate Association, frames the balance as business interest set against environmental preservation.

For a tenant deciding where to site a factory, the useful question is not the plaque but the utility contracts: what the treated water costs, how reliable the power is, and whether the waste facility has capacity for another plant. An award answers none of those, and an estate's green credentials are tested in the end by its tenants' bills rather than by a trophy.