The Tingvoll solar- and bioenergy-centre has been operating since 2011 and as a result there is a need to do maintenance on installatations, as well as renew the centre with new installations. The work is linked to the attractions presented in Tingvoll Økopark. The installations are mobile in order to utlise them for school-visits, seminars and presentations elsewehere. An important focus is the understanding of the difference between power (kW) and energy (kWh) and an improved understanding of the amount of energy that different units need to operate.