“Solar power has come of age”

Interview with EESL’s Rajat Sud

Decentralised solar power plants can be a viable and attractive proposition for discoms, believes Rajat Sud, managing director, Energy Efficiency Services Limited (EESL). The company has installed 77 MW of decentralised solar capacity till date and plans are in place to scale up the portfolio to 1,000 MW. In an interview with Renewable Watch, Sud talked about EESL’s recent initiatives and plans for the decentralised solar, electric vehicle (EV) charging and smart metering segments, its key priorities and the sector outlook going forward. Excerpts…

What are some of the key trends shaping the power sector and in particular the energy efficiency segment?

India is moving aggressively to achieve its renewable energy targets, with solar in particular becoming a leading source of power in the country. However, the increased share of renewables in the grid requires adjustments and increased investments in technology and the grid. Solar power today is more cost competitive than new coal and certainly cheaper than existing coal. It has the potential to considerably reduce the operating cost of discoms by substituting the conventional power requirement of agricultural feeders, and eventually entire villages. Further, with the right application of storage, the grids can be solarised.

The three major trends that are converging to produce game-changing disruptions are:

  • Decarbonisation of major sectors: These include transport and heating through electrification. EVs, vehicle-to-grid/ home, smart charging and heat pumps will be some of the key technologies in this respect.
  • Decentralisation: It is spurred by the sharp decrease in the cost of distributed energy resources such as distributed storage, distributed generation, demand flexibility and energy efficiency.
  •  Digitalisation of the grid: This involves the use of smart metering, smart sensors, automation, IoT and connected devices.

We are also experiencing rapid EV adoption, which will lead to an increasing number of spent batteries. While these batteries are not viable for mobility, they still have a valuable economic life for other applications.

How is the EV charging infrastructure ecosystem shaping up? What are some of the roadblocks hampering the roll-out of public charging infrastructure?

The availability of adequate charging infrastructure is one of the prerequisites for further accelerating EV adoption in India. It will also address the issue of range anxiety in the public. Setting up charging stations at highways and cities will encourage the public commuting from one city to another to adopt EVs, enabling a smooth and sustainable transition to a future-oriented mobility solution.

The critical factor in the growth of EV and charging infrastructure (EVCI) businesses is the appreciation of the benefits of e-mobility:

  • The immediate need is to reduce the power consumption cost, especially for EVCI. The cost of power is the biggest component (60-80 per cent) of the EVCI business. A subsidised unit cost for the sector will strengthen charging infrastructure, bringing more EVs on the roads. The adoption of EVs will also reduce our import bill by limiting the import of oil.
  • Urban local bodies (ULBs) can come forward to expand charging infrastructure, which is limited in smaller cities. Reserving prime spaces for such infrastructure will encourage EV adoption across the country. This will also help in improving the air quality, which was contributed by vehicular pollution.

To create awareness and enable adoption, we are working with various government departments and ULBs. We have signed MoUs with the Ahmedabad Municipal Corporation; Greater Hyderabad Municipal Corporation; Commissioner and Director of Municipal Administration, Government of Telangana; Chennai Metro Rail Corporation; Jaipur Metro Rail Corporation; New Delhi Municipal Council (NDMC); South Delhi Municipal Corporation; Department of New and Renewable Energy, Government of Haryana; Noida Authority; Apollo Enterprises Limited (Apollo Hospitals); Maharashtra Rail Corporation Limited; PWD Maharashtra; and CSC e-Governance Services India Limited for setting up public charging infrastructure across India. We have also signed an MoU with the National Highways Authority of India to install chargers every 25 km on highways. So far, we have installed 223 EV charging stations across the country.

What are some of the challenges involved in scaling up decentralised solar power? How are EESL’s plans on this front shaping up?

There are a multitude of benefits of decentralised solar for India’s hinterland. It offers remarkable scalability as a large number of small solar power plants can be swiftly installed in the open or unused land of substations across the country. An example of the considerable potential of decentralised solar is that there are currently around 40,000 substations at the 33/11 kV level in rural areas and even if only 1 MW of solar power is connected to each of these substations, a capacity of 40 GW solar can be added. This can save around 26 BUs annually against T&D losses, which is worth Rs 90 billion to discoms. In addition, there are 66/11 kV and 110/11 kV substations that can also act as anchor points for connecting small solar power generating plants.

Through our BOOT business model, we eliminate upfront costs for discoms. Thus, the capex and opex are funded by EESL upfront and recovered from the discoms over the course of the project period. We install the power plants and maintain them for a period of 25 years and the energy generated from the projects is sold back to the discoms at a tariff equal to or lower than the CERC/SERC-determined tariff. This makes the adoption of decentralised solar viable and attractive for discoms. We have signed a power purchase agreement with Maharashtra State Electricity Distribution Company Limited (MSEDCL) for 200 MW of solar power projects, with each project capacity ranging from 0.5 MW to 2 MW. The projects will be developed on vacant/unutilised/spare land of MSEDCL, Maharashtra, under the Mukhyamantri Sour Krushi Vahini Yojana. So far, we have installed and commissioned decentralised solar power plants of 77 MWp cumulative capacity (0.3-10 MW range) on vacantun utilised/spare land of MSEDCL. We are also in the process of planning and executing approximately 1,000 MW of solar projects in the states of Maharashtra, Andhra Pradesh, Meghalaya, Jharkhand, Tamil Nadu and Chhattisgarh.

What are your top priorities and plans for EESL for the next one to two years?

Our major focus is on improving indoor air quality, thermal comfort and energy efficiency in air conditioning systems in complex buildings through our Retrofit of Air-conditioning to Improve Indoor Air Quality for Safety and Efficiency (RAISE) programme. The pilot project for RAISE at the Scope Complex has shown impressive results with about 80 per cent improvement in air quality parameters and almost no implementation hassles. In the coming year, we are looking to partner with the operators of public spaces such as hospitals, malls, airports and offices. As the immediate next step, we are in discussions with the centre to start projects in some government-run hospitals in Delhi.

We are also working to overcome the existing barriers in the implementation of energy efficiency initiatives in Indian MSMEs. We are promoting market transformation for energy efficiency in MSMEs, which is a joint initiative of UNIDO and the office of the DC MSME. The project aims to create and sustain a revolving fund mechanism to ensure the replication of energy efficiency measures in selected industrial clusters. We are closely working with the Small Industrial Development Bank of India and the Bureau of Energy Efficiency on this project.

We have already signed agreements with different state governments to provide energy efficient solutions through our programmes, namely the Street Lighting National Programme; Smart Meter National Programme, UJALA, the National E-mobility Programme; and the Decentralised Solar Power Plant Programme. We have also partnered with some private players on our trigeneration programme, highlighting industrial and environmental benefits.

What is the outlook for the power sector in the medium to long term?

The power sector is rapidly integrating technologies, making renewable power much more affordable. As our power system matures, we are also witnessing new and disruptive business models, which have high applicability in India. Solar power has come of age in the country, offering several advantages.

Distribution generation and storage costs are declining as they are scaling up. The digital touch and low-cost automation will create a new business model with a superior electricity use experience. It will include behind-the-meter services, such as storage, demand response and efficient use. Further, future retailers will sell akin to the OTT model in telecom.


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