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Climate-resilient decentralized solar solutions

A new report shows that decentralized PV installations in some parts of India are poorly designed to cope with future climate risks. The researchers outline policy and design considerations for more resilient structures.

From pv magazine India

Climate change affects the technical, operational, and financial specifications of projects. However, a new study by World Resources Institute shows that decentralized solar installations in India’s energy-scarce states are poorly designed for climate resilience. 

The researchers analyzed 14 decentralized solar energy systems (standalone or minigrid-sized installations) installed in community-level health care, education, and livelihood facilities in climate-vulnerable regions across three states (Assam, Jharkhand, and Rajasthan) of India. The primary climate risks in the states are listed as floods, waterlogging and extreme precipitation in Assam, thunderstorms in Jharkhand, and extreme heat and water scarcity in Rajasthan.

The researchers said that none of the decentralized solar installations covered in the case studies specifically incorporated predictions of future climate change into their project designs. Climate considerations were even less evident in operational and financial designs. 

The researchers found that only a limited number of case study installations had operational clarity over roles and responsibilities during and after a climate-related event or have funding arrangements to deal with the aftermath of an event. Furthermore, the clarity that some possess stemmed from learning through experience and not from the project design. 

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The researchers acknowledged that many renewable energy projects adapted their designs considering specific local conditions. These considerations, however, didn’t suffice to manage climate-related risks over the project lifecycle. For example, in Assam, to deal with waterlogging and flooding, installations are designed to withstand higher water levels, either through raised platforms or through technologies such as floating solar installations. Jharkhand is prone to thunderstorms and lightning, and a few pilot implantation projects in the state have installed lightning rods, surge protectors, and chemical earthing. In the desert state of Rajasthan installations are designed to withstand extreme temperatures and strong winds, and include insurance of structures in project design.

The researchers identified additional considerations for decentralized solar energy installations in climate- vulnerable regions. Technical considerations include understanding the current and future climate risks in a region, how they affect demand and supply of electricity, and what technology options, codes, and guidelines exist to ensure that energy systems remain useful and functional. The implementing agencies and vendors should also consider whether project timelines include climate risks through the four stages of the project life cycle and whether the technical designs consider the market availability of spare parts if disruptions occur.

Organizational considerations include whether the contractual and non-contractual responsibilities of all participants are laid out in the event of climate-related disruptions and whether they have adequate capacity to execute them. Users and implementing agencies should account for local capacity building, contingency communication, or response plans under contractual obligations that can be activated during climate-related events. Energy project planning should consider a local community’s expectations, including the role played by energy in a community’s current and future coping mechanisms to manage climate-related risks.

Economic considerations include a realistic estimate of whether finance for a project incorporates climate resilience as a critical element of project planning. Funding agencies, implementing agencies, and users should collaborate on project plans that are flexible enough to integrate innovative financing options to hedge against short- and long-term uncertainty.

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Source: pv magazine