| In millions, except per share items | Dec-31-11 | Dec-31-10 | Dec-31-09 | Dec-31-08 | Dec-31-07 | Dec-31-06 | Dec-31-05 | Dec-31-04 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| Revenues |
| ResidentialBusiness | 77.4 | 67.6 | 60.5 | | | | | |
| C&IBusiness | 59.0 | 51.8 | 38.3 | | | | | |
| Utility Products & Services | | | | | 18.8 | 18.0 | | |
| Residential Business | | | | 45.0 | 27.7 | 17.6 | | |
| Commercial & Industrial Business | | | | | 8.7 | | | |
| Eliminations | | | | | | | -3.1 | -1.3 |
| Smart Grid Solutions Group | | | | | | | 17.7 | 17.4 |
| Alternative Energy Resources Group | | | | | | | 8.8 | 1.2 |
| |
| EBIT |
| ResidentialBusiness | 6.2 | -2.1 | -5.0 | | | | | |
| C&IBusiness | 9.5 | -7.5 | -2.9 | | | | | |
| Utility Products & Services | | | | | -0.9 | -0.9 | | |
| Residential Business | | | | -0.4 | 3.9 | 1.1 | | |
| Commercial & Industrial Business | | | | | -1.1 | | | |
| Eliminations | | | | | | | -0.3 | |
| Smart Grid Solutions Group | | | | | | | -3.1 | -3.8 |
| Alternative Energy Resources Group | | | | | | | -1.6 | -2.1 |
| |
| Mix |
| ResidentialBusiness | 56.7% | 56.6% | 61.2% | | | | | |
| C&IBusiness | 43.3% | 43.4% | 38.8% | | | | | |
| Utility Products & Services | | | | | 34.0% | 53.0% | | |
| Residential Business | | | | 58.3% | 50.1% | 51.8% | | |
| Commercial & Industrial Business | | | | | 15.9% | | | |
| Eliminations | | | | | | | -13.2% | -7.3% |
| Smart Grid Solutions Group | | | | | | | 75.6% | 100.6% |
| Alternative Energy Resources Group | | | | | | | 37.6% | 6.7% |
| |
| Growth |
| ResidentialBusiness | 14.5% | 11.8% | | | | | | |
| C&IBusiness | 14.0% | 35.0% | | | | | | |
| Utility Products & Services | | | | | 4.5% | | | |
| Residential Business | | | | 62.9% | 57.5% | | | |
| Eliminations | | | | | | | 144.6% | 32.3% |
| Smart Grid Solutions Group | | | | | | | 1.6% | 7.9% |
| Alternative Energy Resources Group | | | | | | | 658.0% | 366.9% |