Ameland, one of the Dutch West Frisian Islands situated within the Wadden Sea UNESCO World Heritage Site, is committed to a full transition away from natural gas in line with the Netherlands' Climate Agreement target of a gas-free built environment by 2050. Heating currently accounts for approximately 67% of the island's total energy demand (excluding the NAM platform), almost entirely supplied by imported natural gas via individual gas-fired boilers. This report provides an assessment of options for sustainable district heating based on low-carbon heat sources.
Four primary heat source families are examined: (i) shallow geothermal energy (ATES/BTES with central or collective heat pumps); (ii) aquathermal energy, subdivided into thermal energy from surface water (TEO), wastewater (TEA), and drinking water (TED); (iii) seawater-based systems (WSHP/thalassothermal); and (iv) ambient air-source heat pumps (ASHP). For each, the report provides a technology overview, a structured SWOT analysis, and illustrative case studies from analogous settings across Europe. Additionally, a weighted multi-criteria assessment scores each source family against seven Ameland-specific criteria.
The report recommends a phased, village-by-village approach, with aquathermal or shallow geothermal pilots as first movers in Ballum and Nes. Governance should be anchored in the municipality or a publicly majority-owned entity (in line with the forthcoming Wet Collectieve Warmte). Financing options include the WIS subsidy (currently open until 31 August 2026, with a fixed rate of 30% of eligible investment costs), SDE++, and EU Green Deal or ERDF co-funding. Delaying the decision risks implicitly defaulting to all-electric solutions whose grid impact on a submarine-cable-constrained island has not been fully costed at a societal level.