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Hi Meena

While i am still in the process of trying to refine the idea, some of the possible next steps are

1. Contact manufacturers/design consultants and understand feasibility and cost options
2. Identify projects in affluent communities that are under planning and build awareness
3. Conduct survey among real estate developers regarding interest in zero emission or "green" projects

in many ways the above points are just "thinking out loud" points and is open to modifications

Hi Shish

The solar roof on road advertisement idea indeed tackles the same issues - space, and has commercial viability which makes it very interesting. Perhaps it can be coupled with structures that exist over existent roads such as footbridges, flyovers, ..etc
this takes away a lot of the regulation hurdles cause it is an existing structure

Hi Selina

There is an existing trial in the netherlands (Solaroad) - the project budget is 3.5 million euros for this 70 m path however it also includes R&D costs and does not represent cost per metre squared. The return on Investment as advised by Solaroad is 20 years but may be able to be reduced to 15 years.

as it is a developing technology with no established economies of scale, the cost input into this idea is still not adequate unfortunately