PLT AND PAX ABOARD HOT AIR BALLOON STRIKE PWR LINES ON LNDG APCH.

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IN PREPARATION FOR A MORNING FLT ON SEP/SAT/05; I CALLED THE FSS IN MCALLISTER; OK; TO GET A WX BRIEFING. THE BRIEFING INDICATED CONDITIONS WERE GOOD FOR MORNING FLTS. AFTER MEETING THE CREW AND PAX; WE PROCEEDED TO LAUNCH SITE. THE INFLATION AND LIFTOFF WERE UNEVENTFUL WITH WINDS OF ABOUT 5 MPH. THE FLT PROCEEDED FOR ABOUT 45 MINS IN A NORTHERLY DIRECTION AT AN ALT OF ABOUT 1800 FT AGL. AT ABOUT XA30; I CONTACTED MY GND CREW AS TO WIND CONDITIONS ON THE SURFACE. I WAS TOLD THAT THE WIND CONDITIONS HAD PICKED UP TO APPROX 10-12 MPH. I PROCEEDED TO DSND IN PREPARATION FOR LNDG IN AN OPEN FIELD. ALL PAX HAD BEEN BRIEFED ON PROPER PRE LNDG PROCS. I OBSERVED THERE WERE PWR LINES RUNNING N/S ALONG THE E SIDE OF THE SITE. I DID NOT OBSERVE ANY E/W PWR LINES. THERE WAS A ROW OF TREES RUNNING E ALONG A PROPERTY LINE AT THE S END. THESE TREES POSED THE LAST OBSERVED OBSTACLE TO MY LNDG IN THE FIELD. AS I DSNDED OVER THE TREE LINE; I OBSERVED A LINE OF PWR LINES RUNNING E ON THE N SIDE OF THE TREES. I ADDED HEAT TO ARREST MY DSCNT. I WAS TOO CLOSE AND MOVING TOO FAST. I WAS UNABLE TO GAIN ALT TO AVOID STRIKING THE PWR LINES. THE LOWER PART OF THE BASKET CAUGHT ON THE TOP 2 PWR LINES. THE PWR LINES STRETCHED OUT ABOUT 5 FT CAUSING THE BASKET TO TILT AT ABOUT 60 DEGS. AT THIS POINT THE BASKET SLIPPED OFF THE PWR LINES. I HEARD A POPPING SOUND AS THOUGH THE PWR LINES HAD HIT EACH OTHER AFTER RELEASING THE BASKET. THE BASKET PROCEEDED TO BRUSH THROUGH ANOTHER TREE. I HAD INTENDED TO USE THIS TREE TO SLOW MY FORWARD MOTION. AFTER SLIPPING THROUGH THE TREE; I VENTED HEAT FROM THE BALLOON AND LANDED IN THE FIELD WITHOUT FURTHER INCIDENT. PAX NOR CREW INCURRED ANY INJURIES. THE GND CREW ARRIVED. WE PACKED UP AND LEFT THE LOCATION.