THEMA estimates current battery costs at €75,000 ($88,000) to €120,000 per megawatt, per year for systems with two hours of storage capacity, depending on cost assumptions, service life, and weighted average cost of capital. . Analyst THEMA Consulting Group has calculated the impact of rapid expansion of battery storage systems in Germany and found they will help stabilize solar prices by reducing the number of negatively-priced-electricity hours – but will cannibalize their own revenue in doing so. Negative electricity. . Germany is the largest energy consumer in the European Union followed by France and Italy. High energy prices have been a challenge for industry and private consumers in recent years. 6 gigawatts (GW) were commissioned in the first half of this year alone. Meanwhile, grid congestion and export limits trap surplus energy domestically, worsening price collapses.
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