Getting clean water and clean food at the same time

aerial view of double cropping on rooftop
In a society riddled with energy crises, and a shortage of quality organic produce, solar double cropping solves both problems in one go.

Share This Article

Share on whatsapp
Share on facebook
Share on linkedin
Share on twitter
Share on email

Originally posted on Medium (

Buy 1, Get 1 (Sort Of) Free. We are all attracted to that, aren’t we?

You may have heard of solar parking lots, solar powered mines, and even parks that cultivate honey bees. But, the list does not end there. There are various means to find a middle-ground solution for optimal land usage.

Addressing two very common global issues — food and power security, we present to you – Solar Double Cropping.

solar double cropping in process
Water Use: Cleans Panels + Waters Plants

What is Solar Double Cropping? Cultivating shade-loving crops under an array of solar panels.

jute bags under solar panels
Jute Bags: Enables Retention of Moisture, Prevention of Weed Growth

How is it done?

Seeds of different vegetables are sown beneath the panels leading to dual utilisation of the same land. The seeds are chosen considering factors like daylight and shade requirement, crop cycle, season, temperature, type and fertility of the soil. Natural rainwater and the water that is used for the cleaning of these solar panels are funnelled down to cultivate the chosen shade-loving crops.

Two Goals. One Solution.

Solar panel efficiency is affected by an increase in the surrounding temperature. Excess heat under the panel reduces output efficiency by 10–25%. (Read more: Output current exponentially changes with temperature of the solar panels.)

Therefore, solar power clubbed with farming is a win-win situation. Panels are set-up a little above the surface level, allowing the prolonged flow of air to provide a cooling effect. Simultaneously, the heat under the panels is utilised by the plants for their growth.

We may have 99 problems, but food and power security need not be two of them.

So, how can you be a part of this dual land and water use paradigm?

An IGBC Platinum rated apartment building in Bengaluru has successfully adopted this technique. Today, while being able to power their common area with solar energy, they also grow vegetables for the community.

rooftop view of green rated apartment building
Asset Aura: Bengaluru, IGBC Platinum Rated Apartment

Can you also do it? Yes. 
How? It involves two simple steps.

1. Become an independent power producer. Install a solar energy system on your idle roof space or land area.

google search result for vegetables
A Google Search Result: Crops Suitable For Solar Double Cropping

2. Become an independent food producer. Cultivate shadow-resistant crops under the solar panels. You can also choose to grow plants that require light, around the panels.

It’s that easy.

While this concept is far from reaching the masses, even a niche adoption of solar double cropping is a big leap towards creating a sustainable world.

flowchart of solar double cropping
Efficiency Increases With Solar Double Cropping

Solar-jointed-Farming: A Summary

Solar power plants have the potential to double-utilise the land by incorporating agricultural activities under solar panels.

Short-Term Gains

1. Steady income from utilising the clean power and selling off excess energy and farm produce
2. Optimal utilisation of water
3. Increase in area of land for agriculture

Long-Term Gains

1. Reduction in the fine dust on the crop enabling healthy growth
2. Hyperlocal employment generation
3. Escalation of land value

In a society riddled with energy crises, and a shortage of quality organic produce, solar double cropping solves both problems in one go.

Originally posted on our Medium profile • May 30, 2018
Copyright 2019, Azotea Energy Private Limited. All Rights Reserved.
Designed by Solarify

+91 99806 30410

alt="Earth GIF"
Solarify Logo
Terms Of Services | Privacy Policy
Copyright 2020, Azotea Energy Private Limited. All Rights Reserved.
Designed by Solarify
Earth GIF
Earth GIF