If offices REALLY want their workers in their buildings they've known for years that they have the options of using the real estate of the surface area* on the building itself to place solar and offset their demand massively. They can also incentivise massively to help their workers use electric vehicles - no not cars but ebikes, scooters and electric motorcycles and provide secure parking and charging. For those that use these, give them a bonus, buy the bike for them. Bikes free up staff parking to be used for other things.

*the sides of the building can also be used to hang panels, so if the roof is occupied with air con systems etc you still get power. There is usually just a 10% drop off in daily power generation, too, but an advantage is both that the panel cools more effectively in this position, and it also cools the building passively by shading the sun.