A number of aspects relevant to borehole-based mine water heat schemes have not been considered as part of opportunity assessment criteria.
Mae llawer o’r elfennau sy’n berthnasol i gynlluniau gwres dŵr mwyngloddiau sy’n defnyddio tyllau turio wedi cael eu hystyried fel rhan o’r meini prawf asesu cyfleoedd.