Solar can contribute, but the timing is awkward: heating demand is usually greatest when winter solar generation is lower. A battery moves energy between times of day; it does not carry summer production into winter. Ask for the combined system to be modelled month by month, with grid electricity, hot water demand and tariff assumptions shown separately.
Join the discussion: Are you considering both technologies together, or adding one to an existing installation?
Suggested next step: Compare an integrated solar and heating design with separate installation options.