I found that using a beacon with efficiency modules is not an efficient way since a beacon itself consumes 750kW, more than energy saved by modules. Using it with speed modules, affected machines also consume additional energy. Plus the 750kW consumed by a beacon, this is also inefficient. I think a...

My solar farm built to survive the night.

Four requester boxes collect corresponding science packs from all over the map and align them on two conveyor belts.