Construction · Power & energy

Solar systems: pooling rooftop and ground-mount installations

Huge commercial and institutional install base; strong manufacturer competition.

Indicative cost in IndiaRs. 3–50L+
Register this requirement — free

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

A rooftop or ground-mount plant is specified in kWp and judged on the annual yield it is expected to produce: modules, string or central inverters, a mounting structure engineered for the roof type and wind zone, DC and AC cabling and protection, earthing and lightning protection, monitoring, and the interconnection and net-metering approval from the distribution utility. The commercial structure changes what is being bought — an outright purchase at Rs. 3–50L+ is a different document from a third-party-owned plant supplying power under an agreement. Quotes differ on module and inverter selection, the DC to AC sizing ratio, cable sizing, structure design wind speed and corrosion protection, and how much utility liaison is included. Buying on rupees per watt hides all of it.

Why solar systems suits collective purchasing

The founder correspondence ranks solar third with very high group-buy potential and notes that manufacturer competition is already strong — stronger than for lifts or HVAC. That cuts both ways and is worth saying plainly: the rate already moves without a pool, so the value of aggregating here lies as much in a common technical standard, a common warranty and a common operations-and-maintenance term as in the price. Institutional buyers build one plant once and hold no repeat leverage alone. Modules, inverters and the O&M contract are the poolable parts; structure and installation stay site-specific, priced against a common schedule.

Pin down before price

  • Capacity in kWp DC and AC, expected annual yield, and the assumptions behind it
  • Performance-ratio guarantee, and how a shortfall is measured and settled
  • Module and inverter make, model, warranty term and who honours the warranty
  • Structure design: wind zone, roof penetration or ballast, corrosion protection, certificate
  • Scope for utility approval, net metering and the sanctioned-load check

What drives ten-year cost

  • Inverter replacement is the main mid-life event and rarely sits in the purchase price
  • Cleaning frequency and water availability — soiling shows up directly in yield
  • Module degradation measured against the warranty curve, not the brochure
  • Roof waterproofing and safe maintenance access over the plant's life

How a pool for this runs

1
Aggregate the demand. Institutions register a requirement and a timeline. Nothing is committed and nothing is paid — the pool simply establishes how much demand exists in one window.
2
Standardise the specification. One technical specification is written for the pooled requirement, so every bidder quotes the same machine. Clinical and engineering specification is never traded away for price.
3
Qualify the suppliers. OEMs and authorised distributors are qualified on manufacturer authorisation, past performance, end-user certificates, financials and demonstration — before any price is opened.
4
Run the price competition. Only technically qualified bidders enter an online reverse auction, with a minimum decrement and automatic extension so the close cannot be sniped.
5
Award on ten-year cost. Lowest is judged on total cost of ownership over ten years — machine, turnkey, software, accessories, transport, insurance, taxes, warranty, maintenance contract, tubes, uptime and training.
6
Buy directly, individually. Each institution raises its own purchase order against the negotiated price and pays the OEM or dealer directly. buytogethr never takes title, never holds stock and never holds your money.

Also pooled under Power & energy