Polyhouse ROI & When Does It Pay Back?

First the investment = area × cost per m². A subsidy cuts what you actually pay, so net investment = investment × (1 − subsidy). Annual profit = area × (yield × price − running cost). Payback in years = net investment ÷ annual profit, and ROI% = annual profit ÷ net investment. The tool does all of this and shows each figure so you can see what drives the return.

A polyhouse costs a lot to build, but it lets you grow high-value crops out of season, protect them from rain, pests and heat, and get much higher, more reliable yields and prices than the open field. A subsidy lowers the up-front cost, and the strong off-season margins mean the net cost is often recovered in just a few years rather than a decade.

It depends on the structure: a simple naturally ventilated polyhouse costs less per m² than a fan-and-pad climate-controlled one. Enter your quoted cost per m² and the area, and the tool gives the total investment. Remember to budget for the planting media, irrigation/fertigation system and any climate equipment within that cost per m².

Government schemes for protected cultivation (for example MIDH or NHB in India) can cover a large share of the structure cost, paid as a percentage up to an area and cost ceiling. The tool applies your subsidy percentage to show the net investment you actually fund. Always confirm current rates, caps and eligibility before relying on a subsidy in your plan.

Include seedlings or planting material, fertiliser and fertigation, crop protection, labour, electricity for pumps and any fans, and routine maintenance. The tool takes a running cost per m² per year and nets it off the gross income, so the annual profit it shows is the margin after these recurring expenses — not just the revenue.

The UV-stabilised polyethylene cover typically lasts about 3–4 years before it needs replacing, and insect nets and shade nets wear too. This is a real recurring cost on top of the structure, so set aside a sinking fund for it. Treat the headline payback as the time to recover the structure, then keep budgeting for film renewal.

Well-run polyhouses growing high-value crops — coloured capsicum, exotic vegetables, cut flowers — often show strong annual ROI and a payback of a few years on the net (post-subsidy) cost. But results vary widely with crop choice, market access, agronomy skill and price realisation. Use conservative yield and price figures so your plan isn't built on best-case numbers.

Yes. The maths — investment, subsidy, annual profit, payback and ROI — applies to protected cultivation anywhere. Just choose your currency, enter your local construction cost, any grant or subsidy you qualify for, and realistic yields and prices for your market. The India-specific scheme names are only examples.

Protected cultivation concentrates value, so a pest outbreak, disease, power failure or a price crash can hurt badly. Budget for crop-failure risk, keep some buffer, insure where possible, and don't assume every cycle hits the top yield and price. Stress-test the payback with lower yields and prices to see how robust your plan really is.

No — it's a planning estimate. Real returns depend on your crop, agronomy, market, financing and how many cycles you fit per year. Use it to compare structures and crops and to see roughly how fast the net cost comes back, then build a detailed cash-flow with quotes and confirmed subsidy terms before you invest.