pgm44 wrote:How to encourage the members to minimize the use of water and electricity.
If a mention is not enough, perhaps it will take more encouraging. The bishop may need to mention it. The bishopric may decide to make this the subject of a 5th Sunday discussion. Elders quorums and Relief Societies may decide a special mention during home teaching and visiting visits would help.
Perhaps a simple note near the light switch would help to remind members to straighten chairs and turn off the lights when leaving the room. Or an announcement in a program or bulletin from time to time, if those are being prepared.
These are a few suggestions. Others in the forum may have more.
This would also be a wonderful topic for discussion in ward council, where those closest to the problem will be inspired to use the most effective solutions available in your area to address the challenge of conserving the valuable resources of the Church.