Details about instrument financing:
Of the total 3,5 million Euro, 2 million are sourced from the ‘implementation and service’ budget line of the Ministry responsible for city development and environment; the other 1 million Euro stems from the innovation fund of the Senate Office (the Federal state’s government of Hamburg). Since 1st June 2020 the subsidy system also includes financial and practical support for green facades, with an overall funding of 0,5 million Euro. The subsify programme is implemented via the Hamburg’s Investment and Development Bank (IFB), which handles all applications and transactions for the Green Roof incentives programme. A number of minimum standard criteria must be fulfilled for the subsidy to be granted for green roofs (e.g. minimum 20 m2 net vegetation area, maximum 30° roof slope, minimum 8-12 cm soil thickness, depending on the type of the building). Subsidy amounts vary depending on the size of the measure, location (inner or outer city), combinations with rooftop solar arrays and several other aspects. If additional measures, such as increasing the substrate thickness, the use of open space or combination with solar energy generation, are planned for a green roof beyond the requirements of building law or nature conservation law, funding can also be granted.