Rooftop solar systems for campuses, with net metering in scope
Campus solar; Email 1 names it, Email 12 ranks it third.
The range above is an indicative planning figure taken from our own research, not a quotation and not an offer. buytogethr is pre-launch and has closed no pools.
What you are actually buying
What a campus buys is a generation asset fixed to its own roof: modules, mounting structure, inverters, cabling and protection, monitoring, the structural and civil work, and the distribution-licensee approvals that let exported units count. Bids vary on whether capacity is quoted in DC or AC terms, on module and inverter make, on whether the structure is designed for the site's wind zone and roof construction or copied from a standard drawing, and on cable sizing. Commercial structure varies too: outright ownership against a per-unit arrangement where a developer owns the plant. Buyers most often compare on rupees per watt, which hides all of the above, and size the plant without asking how the state's net-metering rules settle units exported during vacations, when a campus generates and consumes almost nothing.
Why rooftop solar system suits collective purchasing
The founding correspondence lists solar among the categories worth aggregating and ranks it third for group-buy potential, with strong manufacturer competition. The conditions hold: components are catalogue items, the installer market is crowded, and each institution buys once and then never again. What pools is the equipment schedule, the warranty terms and the maintenance rate. What cannot pool is the site itself, since roof, shading, structure and licensee circle differ for every campus. Run as a pool it becomes a technically qualified shortlist competing on price against one common specification, with a per-site survey priced separately so the comparison stays honest.
Pin down before price
- Capacity fixed in both DC and AC terms, with the generation estimate and its assumptions stated
- Module and inverter make and model frozen before commercial bids, with no equivalent substitution clause
- Mounting structure: wind zone, roof type, penetration or ballast method, corrosion protection, and who certifies the roof can carry it
- Warranty split written out: module product warranty, module performance terms, inverter warranty and extension, structure
- Net-metering scope: who files, the sanctioned-load and capacity limits, meter supply, and what happens if approval slips
What drives ten-year cost
- Inverter replacement part-way through the plant's life is the largest predictable cost after purchase
- Cleaning frequency and shading control; a soiled or newly shaded array underperforms without announcing it
- Roof maintenance under the array, which means dismantling and refixing panels
- Whether the maintenance rate is fixed for the term or renegotiated annually