Micro Hydro Electric Power Generators

If you have a stream that has at least 5 feet of head and a flow rate of 40 GPM (gallons per minute), you can produce power 24 hours per day, 7 days a week. The amount of power produced will depend on the head (height water falls), the water flow (GPM) and the efficiency of the hydro turbine. These turbines provide DC power in either 12, 24 or 48 volts to charge a battery bank that used in conjunction with an inverter will provide AC voltage to your home.

Hydro power is the least expensive method of providing power to your home. Using the formula W (watts) = H (head or fall) x GPM (gallons per minute or flow rate) x .18 x .30, you can determine the number of available watts from your water source.

Operates efficiently on heads of 10 to 600 feet and flow rates of 10 to 250 GPM

Multiple nozzles allow greater amount of water to impact the runner resulting in greater output at any head, and more usable power at lower heads. Multi-nozzle systems include a PVC penstock and individual ball valves on each nozzle.

Feeder piping: as a general rule, single nozzle systems with under 2000 feet of feeder pipe require a 2" pipe. A two nozzle system needs a 3" pipe and 4 nozzle systems require a 4" pipe. Pipe losses of under 25% with thus result. Please inquire about specific pipe losses for your site.

Head loss in feet of pipe(PVC plastic pipe) For head loss in feet, multiply PSI by 2.31. For instance, for 20 GPM and 1.5" diameter pipe, multiplying 1.34 PSI by 2.31, you get 3.1 feet. That is, for every 100 feet of 1.5" pipe with 20 GPM flowing through it, you will lose 3.1 feet of head due to friction.
. Flow (GPM)	Pipe diameter (inches)
	1	1.25	1.5	2	2.5	3	4
1	0.05	0.02	0.00	.	.	.	.
2	0.14	0.05	0.02	.	.	.	.
3	0.32	0.09	0.05	.	.	.	.
4	0.53	0.16	0.09	0.02	.	.	.
5	0.81	0.25	0.12	0.05	.	.	.
6	1.13	0.35	0.18	0.07	0.02	.	.
7	1.52	0.46	0.23	0.07	0.02	.	.
8	1.94	0.58	0.30	0.09	0.05	.	.
9	2.42	0.72	0.37	0.12	0.05	.	.
10	2.93	0.88	0.46	0.16	0.07	0.02	.
12	3.51	1.04	0.53	0.18	0.07	0.02	.
14	4.11	1.22	0.65	0.21	0.09	0.02	.
16	5.47	1.64	0.85	0.28	0.12	0.05	.
18	7.02	2.10	1.09	0.37	0.14	0.05	.
20	.	2.61	1.34	0.46	0.18	0.07	0.02
22	.	3.16	1.64	0.55	0.21	0.09	.
24	.	3.79	1.96	0.67	0.25	0.09	0.04
26	.	4.43	2.31	0.79	0.30	0.12	0.05
28	.	5.15	2.66	0.90	0.35	0.14	0.05
30	.	5.91	3.05	1.04	0.42	0.16	0.11
35	.	.	3.46	1.18	0.46	0.18	0.12
40	.	.	4.62	1.57	0.62	0.23	0.13
45	.	.	.	1.99	0.79	0.30	0.15
50	.	.	.	2.49	0.79	0.30	0.20
55	.	.	.	3.03	1.20	0.46	0.25
60	.	.	.	3.60	1.43	0.55	0.30
65	.	.	.	.	1.66	0.65	0.35
70	.	.	.	.	1.94	0.74	0.40
75	.	.	.	.	2.22	0.85	0.45
80	.	.	.	.	2.52	0.97	0.50
85	.	.	.	.	2.84	1.09	0.60
90	.	.	.	.	3.19	1.22	.
100	.	.	.	.	.	1.36	0.80
150	.	.	.	.	.	1.50	1.60
200	.	.	.	.	.	1.66	2.70
300	.	.	.	.	.	.	5.80

Flow rate in gallons per minute(GPM) with various size nozzles Power output is determined by the pressure of the water at the nozzle and the amount of water flowing from of the nozzle. Bigger nozzles assure greater flow rate. Nozzles must be sized small enough to keep your pipeline full and keep the speed of the water in the pipe below 5 feet per second. This table shows water flow through various size nozzles at given pressures. Use to determine the nozzle(s) size you need to accommodate the flow of water you have and deliver the amount of power you need.
Pressure at turbine in PSI (Feet = 2.31 x PSI)
Nozzle Size	20	30	40	50	60	70	80	100
1/8"	2.0	2.6	3.0	3.3	3.6	3.9	4.2	4.7
5/32"	3.3	4.0	4.6	5.2	5.7	6.1	6.5	7.3
3/16"	4.7	5.8	6.6	7.4	8.1	8.8	9.4	10.5
7/32"	6.4	7.9	9.0	10.1	11.1	12.0	12.7	14.2
1/4"	8.4	10.2	11.8	13.2	14.5	15.7	16.7	18.7
9/32"	10.5	13.0	14.9	16.6	18.3	19.8	21.1	23.5
5/16"	13.0	16.0	18.4	20.6	22.6	25.1	27.6	31.0
11/32"	15.7	19.3	22.2	24.8	27.2	29.4	31.4	35.0
3/8"	18.8	23.0	26.6	29.6	32.5	35.1	37.6	42.0
13/32"	22.0	27.2	31.2	34.8	38.2	41.3	44.1	48.3
7/16"	25.5	31.2	36.0	40.4	44.4	48.0	50.4	56.8

Model	Description	Price
Harris Turbine	Single Nozzle PM Alternator	$1700.00
Harris Turbine	Two Nozzle PM Alternator	$1800.00
Harris Turbine	Four Nozzle PM Alternator	$1950.00
Replacement Nozzle	Specify Size	$10.00

Power Output (watts)
	Flow Rate (GPM)
	3	6	10	15	20	30	50	100	200
Head (feet)
25				25	40	60	130	230
50			40	75	100	150	265	500	580
75		34	70	110	160	240	400	700	900
100		45	95	150	240	340	560	975	1300
200	40	120	200	300	480	650	1100	1500	2000
300	80	180	300	450	600	940	1500	2000
600	200	350	600	900	1200	1600	2000	2000

New PM(permanent magnet) Alternator Pelton Turbines

Operates efficiently on heads of 10 to 600 feet and flow rates of 10 to 250 GPM