You can now fasten the TEG circulators, to make your own TEG

code/ATMOSPHERICS/components/binary_devices/circulator.dm

@@ -66,3 +66,13 @@
 		icon_state = "circ-off"
 
 	return 1
+
+/obj/machinery/atmospherics/binary/circulator/attackby(var/obj/item/W as obj, var/mob/user as mob, params)
+	if(istype(W, /obj/item/weapon/wrench))
+		var/turf/T = get_turf(src)
+		if(!istype(T, /turf/simulated))
+			return ..()
+		anchored = !anchored
+		to_chat(user, "You [(anchored) ? "fasten" : "loosen"] \the [src] to the floor")
+		playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
+	else return ..()

code/modules/power/generator.dm

@@ -17,6 +17,7 @@
 
 	var/image/overlay_image
 
+	var/power_multiplier = 1 // This is so admins can tweak how good it is to find a good balance for effort -> power
 	var/powercap = 500000 //Not a hard cap, but outputs above this have a 10% chance to cause the TeG to lose half it's power.
 
 /obj/machinery/power/generator/New()
@@ -81,7 +82,7 @@
 			var/efficiency = 0.65
 			var/energy_transfer = delta_temperature*air2_heat_capacity*air1_heat_capacity/(air2_heat_capacity+air1_heat_capacity)
 			var/heat = energy_transfer*(1-efficiency)
-			lastgen = energy_transfer*efficiency*0.05
+			lastgen = energy_transfer*efficiency*0.05*power_multiplier
 
 			if(air2.temperature > air1.temperature)
 				air2.temperature = air2.temperature - energy_transfer/air2_heat_capacity
@@ -97,8 +98,10 @@
 		circ2.air2.merge(air2)
 
 	//Update the gas networks
-	circ1.parent2.update = 1
-	circ2.parent2.update = 1
+	if(circ1.parent2)
+		circ1.parent2.update = 1
+	if(circ2.parent2)
+		circ2.parent2.update = 1
 
 	// update icon overlays and power usage only if displayed level has changed
 	if(lastgen > powercap && prob(10))