European energy storage: a new multi-billion-dollar asset class
How we produce and consume electricity is changing fundamentally. In Europe, the capacity of renewable energy sources is growing very rapidly, while traditional power plants are slowly being decommissioned. That’s creating a unique new opportunity for investors amid the emerging demand for battery storage, which provides balance to electricity markets. “With energy storage, there’s a new and interesting asset class emerging, and the business model is fundamentally different to that of wind and solar,” says Ingmar Grebien, who leads GS Pearl Street and is a managing director in Goldman Sachs Global Banking & Markets. GS Pearl Street is a platform for trading and financing solutions for clean energy technology. Overall, total energy storage in Europe is expected to increase to about 375 gigawatts by 2050, from 15 gigawatts last year, according to BloombergNEF. We spoke with Grebien about electricity market trends, energy storage technologies, as well as the investment and financing opportunities emerging from these technologies. What sort of challenges does the rise of renewables pose for European electricity markets? By 2050, you’ll have about 72% of electricity produced by wind and solar in Europe, which is a massive increase compared to the 30% we have currently, according to BloombergNEF data. This is really a profound structural change in the electricity market. And it’s here to stay. Now, that’s great from a decarbonization perspective. But it also results in issues with regards to the timing and certainty of supply, because renewables are intermittent sources of power. When there’s no wind or no sun, there’s also no power production. Imagine a world where the light switch only works if the sun shines or the wind blows. As renewables penetration rises, there are increasing imbalances between consumption and production. That can result in market volatility and in some instances extreme price scenarios. For example, some European markets such as the Netherlands or Belgium have already started to see a significant increase in negative hourly prices directly correlated with the rising share of solar and wind power. Energy storage is the key to shifting electricity and resolving those structural issues in a low-carbon way. What opportunities does energy storage offer for investors? With energy storage, there’s a new and interesting asset class emerging, and the business model is fundamentally different to that of wind and solar. Wind and solar assets generate revenues by selling electricity and therefore depend on the absolute level of electricity prices. The rapid increase in renewable assets that all generate at the same time and with low marginal cost of production means that there’s a long-term risk of lower electricity prices, lower capture rates, and lower revenues for those assets. The exact opposite is true for energy storage. Energy storage is shifting electricity, and it makes money from buying, selling, and trading the difference between low- and high-priced hours in the market. Storage assets therefore depend on price spreads, which tend to be higher with more imbalances. Imbalances, in return, are driven by more renewables. Energy storage is therefore well-positioned for an electricity market dominated by renewables and represents an interesting new asset class. It’s also a potential hedge for players who already have classic renewable portfolios. Compared to classic renewables, energy storage has really only become an investable asset in Europe over the last few years on the back of technology advances, market price signals, and government support mechanisms. Overall, market research such as Bloomberg NEF predicts that grid-scale energy storage in Europe will increase to about 375 gigawatts in 2050 from 15 gigawatts last year. Goldman Sachs, through its GS Pearl Street platform, is at the forefront of financing energy storage projects across Europe and provides market leading trading and route-to-market services. What are the key technologies to watch out for in the storage space? For short-duration energy storage projects, utility-scale lithium-ion batteries have emerged as the dominant technology choice. The average cost of lithium-ion battery packs has decreased by more than 80% over the last decade due to technological advances and economies of scale. At the same time, the performance and the longevity of the technology has improved. This has resulted in lithium-ion becoming a bankable technology. But the final verdict on energy storage technology has not been made, in particular for longer-duration storage applications There’s a range of other new technologies that could solve the problem. Sodium-ion batteries for example are potentially a hot contender for large grid-scale storage systems, where high energy density is less important. Other technologies such as liquid air storage, flow batteries, compressed air storage, and gravity applications could all solve the long-duration energy storage problem for electricity markets. However, for the moment these alternative technologies tend to be less mature compared to lithium-ion storage systems. What are the key revenue drivers for storage providers? For short-duration energy storage assets, there are really three key revenue streams for energy storage assets in Europe. The first one is capacity payments, which have become a broadly implemented policy measure by governments to support system reliability and incentivize the installation of certain new power asset types. Capacity contracts tend to be bilateral contracts with governments, for up to 15 years. They’re awarded by auction, and storage providers essentially get paid to build the assets. They provide a fixed revenue stream, the amount of which varies country by country. The second revenue stream is ancillary services. These are market mechanisms designed to provide a service to the grid operator, who must ensure that consumption balances perfectly with production at any time and address any resulting frequency deviations from imbalances between electricity consumption and production. To do that, they need to be able to call on assets to perform certain actions such as ramping up or down at very short notice. Ancillary services are procured by the grid operator on a daily basis, with storage assets free to participate in the various auctions the asset qualifies for. The third type of revenue comes from wholesale markets, and it’s really arbitrage trading. You’re buying electricity more
European energy storage: a new multi-billion-dollar asset class Read More »