The overall objective of Deliverable 6.1. Assessment of Market Potential is to pave the way towards commercialization of the Pressurized Alkaline Electrolyzer (PAE), mainly in grid balancing applications, but other markets as well. Specific targets of this Deliverable are: 1) to assess the market potential of PAE as a means to provide grid balancing and supplying hydrogen to different markets and applications at EU level, 2) to identify available national EU policies promoting Renewable Energy Sources and Energy Storage (including Hydrogen), 3) to come up with an overview of the European electricity markets organization and operation and to compare prices of electricity amongst different Member States, 4) to assess potential markets and business climate for hydrogen produced through electrolysis in different applications and markets, and to identify specific end users, 5) assess the available funding and financing tools and programs and related support policies and develop a list of recommendations on necessary future modifications on them, 6) conduct a sensitivity analysis on existing market opportunities and critical factors affecting the penetration of PAE to the European market, 7) identify the business related risks as well, 8) estimate current and future perspectives of this emerging market and 9) develop the most important conclusions from the overall analysis.