Siemens Energy AG generated total revenue of some 28 billion euros in the fiscal year of 2021. Approximately half of this revenue was generated in the region of Europe, CIS, Africa, and the Middle East.

Over the five years through 2024-25, industry revenue is projected to tank at a compound annual rate of 4.3% to £5.5 billion. Revenue took a massive hit in 2020-21 as manufacturing plants closed, painting a bleak picture for future growth. The COVID-19 pandemic caused a significant drop in industrial production, including a 32% plunge in industry revenue over those two years. Lockdowns and travel bans in 2020-21 disrupted supply chains, leading to container shortages and significantly reduced imports and exports. However, sales in the energy sector stayed strong, boosted by growing UK energy production. Efforts to decarbonise the global supply chain have supported domestic demand for energy-efficient turbines. As of 2024, the UK has the second-highest capacity for wind power in Europe, with over 11,000 wind turbines in the UK, generating approximately 30 GW of electricity annually. Along with other renewables like hydropower, this market has engines and turbines as essential components, supports strong sales and pushes for more niche products, including direct drive turbines, digital twins and embedded sensors. However, import penetration has remained high and hindered manufacturing performance. Countries like Germany and the US have been able to provide more complex machinery on a larger scale, damaging exports and putting pressure on UK companies to splash out on innovation or cut prices, thus hurting profit. Over 2024-25, revenue is anticipated to rejuvenate by 2%, thanks to drops in steel prices, an uptick in wind farms and pushes for gas turbines. Over the five years through 2029-30, engine and turbine manufacturing revenue is expected to dip at a compound annual rate of 1.4% to £5.8 billion. Key buying industries will continue to replace high-carbon-emitting plants and boost investment in clean energy to surpass the UK's 2030 renewable energy and emissions reduction targets and meet its 2050 targets. As such, wind turbines and combined-cycle gas turbine sales will soar, though imports will represent a growing chunk of domestic sales. Now that the UK has left the EU, UK manufacturers must abide by the UK Emissions Trading Scheme, which will follow a similar protocol as the EU ETS. However, omission from the EU research and development funding could limit the industry's productivity and international competitiveness.